From nobody Tue Oct 10 13:34:29 2017 Return-Path: X-Original-To: dhcwg@ietf.org Delivered-To: dhcwg@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 36AF9134524; Tue, 10 Oct 2017 13:32:48 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: The IESG To: "IETF-Announce" X-Test-IDTracker: no X-IETF-IDTracker: 6.63.1 Auto-Submitted: auto-generated Precedence: bulk CC: tomasz.mrugalski@gmail.com, dhc-chairs@ietf.org, Tomek Mrugalski , draft-ietf-dhc-relay-port@ietf.org, dhcwg@ietf.org, suresh@kaloom.com Reply-To: ietf@ietf.org Sender: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <150766756817.13462.14065081325487841740.idtracker@ietfa.amsl.com> Date: Tue, 10 Oct 2017 13:32:48 -0700 Archived-At: Subject: [dhcwg] Last Call: (Generalized UDP Source Port for DHCP Relay) to Proposed Standard X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Oct 2017 20:34:19 -0000 The IESG has received a request from the Dynamic Host Configuration WG (dhc) to consider the following document: - 'Generalized UDP Source Port for DHCP Relay' as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-10-24. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document proposes an extension to the DHCP protocols that allows a relay agent to receive packets from a server or an upstream relay agent on any UDP port, not just the default port 67 for IPv4 or default port 547 for IPv6. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-dhc-relay-port/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-dhc-relay-port/ballot/ No IPR declarations have been submitted directly on this I-D. From nobody Wed Oct 18 07:06:24 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 19B971321A1 for ; Wed, 18 Oct 2017 07:06:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.632 X-Spam-Level: X-Spam-Status: No, score=-2.632 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bASMsq9pnwMI for ; Wed, 18 Oct 2017 07:06:20 -0700 (PDT) Received: from cirse-smtp-out.extra.cea.fr (cirse-smtp-out.extra.cea.fr [132.167.192.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B6207132125 for ; Wed, 18 Oct 2017 07:06:19 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by cirse-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9IE6FQD029442; Wed, 18 Oct 2017 16:06:15 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 92C21206804; Wed, 18 Oct 2017 16:06:15 +0200 (CEST) Received: from muguet1.intra.cea.fr (muguet1.intra.cea.fr [132.166.192.6]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 856612020B7; Wed, 18 Oct 2017 16:06:15 +0200 (CEST) Received: from [10.8.34.184] (is227335.intra.cea.fr [10.8.34.184]) by muguet1.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9IE6ClP021159; Wed, 18 Oct 2017 16:06:15 +0200 To: "Bernie Volz (volz)" Cc: "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: Date: Wed, 18 Oct 2017 16:06:12 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 14:06:23 -0000 Bernie, Le 13/07/2017 à 19:38, Bernie Volz (volz) a écrit : [...] > Regarding Link Local vs GLA in Solicit, I think following the > specification would be recommended. Use link-local. But the I-D 3315bis says this: > Clients and servers exchange DHCP messages using UDP [RFC0768]. The > client uses a link-local address or addresses determined through > other mechanisms for transmitting and receiving DHCP messages. ^^^^^^^^^^^^^^^^ This "other mechanisms" means that a GUA generated with SLAAC could be used as an src in a DHCPv6 Solicit. [...] > Note also that section 13.1 (for the unicast, GLA case) assumes the > message was not multicast (section 18.4 about UseMulticast Status > talks about "Reception of Unicast Messages"). Hm, that lokks like a relatively less explicit if not outright silent assumption(?) Or maybe I did not look well enough in the I-D? There is a particular equipment manufacturer's simulator software, and potentially real hardware, that uses GUA in src and dst multicast with link scope ff02::1:2.547, in the DHCPv6 Solicit. If this behaviour is standard (src GUA and dst ff02::1:2) then it should be in the draft. If it's not standard: it should get corrected in the simulated and in the real implementation. Because other software than the one from the particular equipment manufacturer uses src LL and dst ff02::1:2. Side note: > I think section 13.1 was written with the assumption that determining > the destination address of a packet is harder than obtaining the > source address; hence the assumption is that if a GLA is used as the > source address, it was not a multicast [to the link-local multicast > address]. Today, kernels typically provide the ability to get the > destination address, not just the source address (though it takes a > bit more code to do so). The picture may be different on point-to-point links like cellular links. It's multicast, but it's just two nodes and they are always seeing each other. Besides, one of the nodes allocates an address to the other node by other means than SLAAC, and it knows it. Alex > > >> I can say e.g. some (I believe Cisco) client puts a GUA in the src >> of aDHCPv6 Solicit. > > That's a bit of a broad statement as Cisco has many different devices > (and many different operating systems and versions) ... perhaps if > you could indicate which device(s) and software versions you've found > this to be the behavior on, I can perhaps follow up. > > I will also add that in many cases when devices are doing DHCPv6, > they will only have a LL so it may also depend on the network > configuration. > > - Bernie > > -----Original Message----- From: Alexandre Petrescu > [mailto:alexandre.petrescu@gmail.com] Sent: Thursday, July 13, 2017 > 12:01 PM To: Bernie Volz (volz) Cc: dhcwg@ietf.org > Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - > questions about Solicit Prefix Delegation > > Bernie, > > Le 12/07/2017 à 23:33, Bernie Volz (volz) a écrit : >> Hi: >> >>> What is the Hop Limit that a Solicit should contain in the IPv6 >>> header? >> >> ND uses hop limit of 255 so the destination can check that it is >> 255 on receipt (whereas 1 could have been anything and forwarded >> many times). >> >> But I'm not sure if that is a the best practice when you don't >> want the packet forwarded. I would think that if the destination is >> a link-local multicast, it really doesn't matter as nothing should >> forward the packet (and if something is misconfigured to forward >> the packet, you're probably in deeper trouble than just with >> DHCPv6). >> >> RFC 4861 has: >> >> 11.2. Securing Neighbor Discovery Messages >> >> The protocol reduces the exposure to the above threats in the >> absence of authentication by ignoring ND packets received from >> off-link senders. The Hop Limit field of all received packets is >> verified to contain 255, the maximum legal value. Because routers >> decrement the Hop Limit on all packets they forward, received >> packets containing a Hop Limit of 255 must have originated from a >> neighbor. >> >> I don't know off hand if there's any place this is documented (what >> to use for hop limit with link-local). > > I think your explanation makes sense about ND. > > But, about DHCP, I need to know whether a DHCP Solicit with HopLimit > 1 is valid or not. > > As I said earlier, some DHCP clients set it at 255 whereas others at > 1. > > In some setting, the DHCP Solicit is encapsulated in IPv4. Some of > the decapsulation RFCs say that the HopLimit is decremented. > > In that setting, it is not clear whether decrementing the hop limit > happens, or not. > > But I want to make sure the client which sets HopLimit at 1 (odhcp6c) > is the right way to do. > > I think a good place to clarify this is in the DHCP spec. > > The spec could say that the HopLimit has some preferred value. > >>> Is IA_NA with empty fields a valid option in a Prefix Delegation >>> Solicit, or must IA_NA be absent altogether? (the intention is to >>> only request the Prefix, because the address comes from RA). >> >> Not sure what an "empty" IA_NA is. Whether you include an IA_NA or >> not with IA_PD is the client's choice. If it what's an address >> (such as for management) on the upstream link, than it should >> include an IA_NA. This is covered in the text in 6.3 (IA_PD only) >> vs 6.4 (IA_PD and IA_NA, typically). > > Noted. > >>> Is ORO with empty fields illegal in a Prefix Delegation Solicit? >>> (the intention is to get the DNS server from RA, but some client >>> puts an empty ORO there). >> >> An empty ORO is fine (it should not cause problems, but is >> obviously useless). Though if they are following the rfc3315bis and >> doing what they should, there would not be an empty ORO. > > Noted. > >>> Is it ok to use a GUA in the src address of a Solicit Prefix >>> Delegation? >> >> See 13.1 of draft-ietf-dhc-rfc3315bis-09 ... the source address >> here should be link-local. > > Well, that contradicts some trial. > > I can say e.g. some (I believe Cisco) client puts a GUA in the src of > a DHCPv6 Solicit. Other DHCP clients have this optional between LLA > or GUA. The operator I work with wants it to be a GUA. > > As such, I dont know what is the way forward: should the spec get > updated? shoudl the operator change? should the Cisco > implementation change? > > Alex > From nobody Wed Oct 18 07:25:59 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id E62CF124B17 for ; Wed, 18 Oct 2017 07:25:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.52 X-Spam-Level: X-Spam-Status: No, score=-14.52 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org 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18 Oct 2017 09:25:51 -0500 Received: from xch-aln-003.cisco.com ([173.36.7.13]) by XCH-ALN-003.cisco.com ([173.36.7.13]) with mapi id 15.00.1320.000; Wed, 18 Oct 2017 09:25:51 -0500 From: "Bernie Volz (volz)" To: Alexandre Petrescu CC: "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSBpFO3Bh3/i+xk+Llo298YhKFKLpuoSA Date: Wed, 18 Oct 2017 14:25:51 +0000 Message-ID: <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/f.22.0.170515 x-ms-exchange-messagesentrepresentingtype: 1 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YW5nZT8NCiAgICA+IA0KICAgID4gQWxleA0KICAgID4gDQogICAgDQoNCg== From nobody Wed Oct 18 09:01:23 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0B5D7132E24 for ; Wed, 18 Oct 2017 09:01:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.632 X-Spam-Level: X-Spam-Status: No, score=-2.632 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uvOp8hNl6ym7 for ; Wed, 18 Oct 2017 09:01:19 -0700 (PDT) Received: from oxalide-smtp-out.extra.cea.fr (oxalide-smtp-out.extra.cea.fr [132.168.224.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 22868132D54 for ; Wed, 18 Oct 2017 09:01:18 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by oxalide-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9IG1EWj191401; Wed, 18 Oct 2017 18:01:14 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 876DD20693B; Wed, 18 Oct 2017 18:01:14 +0200 (CEST) Received: from muguet2.intra.cea.fr (muguet2.intra.cea.fr [132.166.192.7]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 78AC72068AF; Wed, 18 Oct 2017 18:01:14 +0200 (CEST) Received: from [10.8.34.184] (is227335.intra.cea.fr [10.8.34.184]) by muguet2.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9IG1ECt024712; Wed, 18 Oct 2017 18:01:14 +0200 To: "Bernie Volz (volz)" Cc: "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> From: Alexandre Petrescu Message-ID: <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> Date: Wed, 18 Oct 2017 18:01:14 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 16:01:22 -0000 Le 18/10/2017 à 16:25, Bernie Volz (volz) a écrit : > Hi Alex: > > Does it really matter what the Client’s source address Yes it is guidance that I need. Alex is as long as > the client can receive packets sent to that address (by a relay or > server that is on that link)? These are link-local packets and so no > router should be involved in them (that’s what the relay agent is > there for – to forward the packets to servers not on the local > link). > > - Bernie > > On 10/18/17, 10:06 AM, "Alexandre Petrescu" > wrote: > > Bernie, > > Le 13/07/2017 à 19:38, Bernie Volz (volz) a écrit : [...] > >> Regarding Link Local vs GLA in Solicit, I think following the >> specification would be recommended. Use link-local. > > But the I-D 3315bis says this: >> Clients and servers exchange DHCP messages using UDP [RFC0768]. >> The client uses a link-local address or addresses determined >> through other mechanisms for transmitting and receiving DHCP >> messages. > ^^^^^^^^^^^^^^^^ > > This "other mechanisms" means that a GUA generated with SLAAC could > be used as an src in a DHCPv6 Solicit. > > > [...] >> Note also that section 13.1 (for the unicast, GLA case) assumes >> the message was not multicast (section 18.4 about UseMulticast >> Status talks about "Reception of Unicast Messages"). > > Hm, that lokks like a relatively less explicit if not outright > silent assumption(?) Or maybe I did not look well enough in the > I-D? > > There is a particular equipment manufacturer's simulator software, > and potentially real hardware, that uses GUA in src and dst multicast > with link scope ff02::1:2.547, in the DHCPv6 Solicit. > > If this behaviour is standard (src GUA and dst ff02::1:2) then it > should be in the draft. If it's not standard: it should get > corrected in the simulated and in the real implementation. > > Because other software than the one from the particular equipment > manufacturer uses src LL and dst ff02::1:2. > > Side note: > >> I think section 13.1 was written with the assumption that >> determining the destination address of a packet is harder than >> obtaining the source address; hence the assumption is that if a GLA >> is used as the source address, it was not a multicast [to the >> link-local multicast address]. Today, kernels typically provide the >> ability to get the destination address, not just the source address >> (though it takes a bit more code to do so). > > The picture may be different on point-to-point links like cellular > links. It's multicast, but it's just two nodes and they are always > seeing each other. Besides, one of the nodes allocates an address > to the other node by other means than SLAAC, and it knows it. > > Alex > >> >> >>> I can say e.g. some (I believe Cisco) client puts a GUA in the >>> src of aDHCPv6 Solicit. >> >> That's a bit of a broad statement as Cisco has many different >> devices (and many different operating systems and versions) ... >> perhaps if you could indicate which device(s) and software versions >> you've found this to be the behavior on, I can perhaps follow up. >> >> I will also add that in many cases when devices are doing DHCPv6, >> they will only have a LL so it may also depend on the network >> configuration. >> >> - Bernie >> >> -----Original Message----- From: Alexandre Petrescu >> [mailto:alexandre.petrescu@gmail.com] Sent: Thursday, July 13, >> 2017 12:01 PM To: Bernie Volz (volz) Cc: >> dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: >> draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix >> Delegation >> >> Bernie, >> >> Le 12/07/2017 à 23:33, Bernie Volz (volz) a écrit : >>> Hi: >>> >>>> What is the Hop Limit that a Solicit should contain in the >>>> IPv6 header? >>> >>> ND uses hop limit of 255 so the destination can check that it is >>> 255 on receipt (whereas 1 could have been anything and forwarded >>> many times). >>> >>> But I'm not sure if that is a the best practice when you don't >>> want the packet forwarded. I would think that if the destination >>> is a link-local multicast, it really doesn't matter as nothing >>> should forward the packet (and if something is misconfigured to >>> forward the packet, you're probably in deeper trouble than just >>> with DHCPv6). >>> >>> RFC 4861 has: >>> >>> 11.2. Securing Neighbor Discovery Messages >>> >>> The protocol reduces the exposure to the above threats in the >>> absence of authentication by ignoring ND packets received from >>> off-link senders. The Hop Limit field of all received packets >>> is verified to contain 255, the maximum legal value. Because >>> routers decrement the Hop Limit on all packets they forward, >>> received packets containing a Hop Limit of 255 must have >>> originated from a neighbor. >>> >>> I don't know off hand if there's any place this is documented >>> (what to use for hop limit with link-local). >> >> I think your explanation makes sense about ND. >> >> But, about DHCP, I need to know whether a DHCP Solicit with >> HopLimit 1 is valid or not. >> >> As I said earlier, some DHCP clients set it at 255 whereas others >> at 1. >> >> In some setting, the DHCP Solicit is encapsulated in IPv4. Some >> of the decapsulation RFCs say that the HopLimit is decremented. >> >> In that setting, it is not clear whether decrementing the hop >> limit happens, or not. >> >> But I want to make sure the client which sets HopLimit at 1 >> (odhcp6c) is the right way to do. >> >> I think a good place to clarify this is in the DHCP spec. >> >> The spec could say that the HopLimit has some preferred value. >> >>>> Is IA_NA with empty fields a valid option in a Prefix >>>> Delegation Solicit, or must IA_NA be absent altogether? (the >>>> intention is to only request the Prefix, because the address >>>> comes from RA). >>> >>> Not sure what an "empty" IA_NA is. Whether you include an IA_NA >>> or not with IA_PD is the client's choice. If it what's an >>> address (such as for management) on the upstream link, than it >>> should include an IA_NA. This is covered in the text in 6.3 >>> (IA_PD only) vs 6.4 (IA_PD and IA_NA, typically). >> >> Noted. >> >>>> Is ORO with empty fields illegal in a Prefix Delegation >>>> Solicit? (the intention is to get the DNS server from RA, but >>>> some client puts an empty ORO there). >>> >>> An empty ORO is fine (it should not cause problems, but is >>> obviously useless). Though if they are following the rfc3315bis >>> and doing what they should, there would not be an empty ORO. >> >> Noted. >> >>>> Is it ok to use a GUA in the src address of a Solicit Prefix >>>> Delegation? >>> >>> See 13.1 of draft-ietf-dhc-rfc3315bis-09 ... the source address >>> here should be link-local. >> >> Well, that contradicts some trial. >> >> I can say e.g. some (I believe Cisco) client puts a GUA in the src >> of a DHCPv6 Solicit. Other DHCP clients have this optional between >> LLA or GUA. The operator I work with wants it to be a GUA. >> >> As such, I dont know what is the way forward: should the spec get >> updated? shoudl the operator change? should the Cisco >> implementation change? >> >> Alex >> > > From nobody Wed Oct 18 09:32:07 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6353C13304E for ; Wed, 18 Oct 2017 09:32:05 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.52 X-Spam-Level: X-Spam-Status: No, score=-14.52 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from 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rcdn-core-6.cisco.com ([173.37.93.157]) by rcdn-iport-6.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Oct 2017 16:31:25 +0000 Received: from XCH-ALN-003.cisco.com (xch-aln-003.cisco.com [173.36.7.13]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id v9IGVPrm011048 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Wed, 18 Oct 2017 16:31:25 GMT Received: from xch-aln-003.cisco.com (173.36.7.13) by XCH-ALN-003.cisco.com (173.36.7.13) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Wed, 18 Oct 2017 11:31:24 -0500 Received: from xch-aln-003.cisco.com ([173.36.7.13]) by XCH-ALN-003.cisco.com ([173.36.7.13]) with mapi id 15.00.1320.000; Wed, 18 Oct 2017 11:31:24 -0500 From: "Bernie Volz (volz)" To: Alexandre Petrescu CC: "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSBpFO3Bh3/i+xk+Llo298YhKFKLpuoSAgABdvgD//7IAAA== Date: Wed, 18 Oct 2017 16:31:24 +0000 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IGluIHRoZSBzcmMNCj4+IG9mIGEgREhDUHY2IFNvbGljaXQuICBPdGhlciBESENQIGNsaWVudHMg aGF2ZSB0aGlzIG9wdGlvbmFsIGJldHdlZW4NCj4+IExMQSBvciBHVUEuICBUaGUgb3BlcmF0b3Ig SSB3b3JrIHdpdGggd2FudHMgaXQgdG8gYmUgYSBHVUEuDQo+PiANCj4+IEFzIHN1Y2gsIEkgZG9u dCBrbm93IHdoYXQgaXMgdGhlIHdheSBmb3J3YXJkOiBzaG91bGQgdGhlIHNwZWMgZ2V0IA0KPj4g dXBkYXRlZD8gIHNob3VkbCB0aGUgb3BlcmF0b3IgY2hhbmdlPyAgc2hvdWxkIHRoZSBDaXNjbyAN Cj4+IGltcGxlbWVudGF0aW9uIGNoYW5nZT8NCj4+IA0KPj4gQWxleA0KPj4gDQo+IA0KPiANCg== From nobody Wed Oct 18 10:42:27 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5B0F0133079 for ; Wed, 18 Oct 2017 10:42:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.632 X-Spam-Level: X-Spam-Status: No, score=-2.632 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hlOHGVIjetPD for ; Wed, 18 Oct 2017 10:42:22 -0700 (PDT) Received: from sainfoin-smtp-out.extra.cea.fr (sainfoin-smtp-out.extra.cea.fr [132.167.192.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 179A013239C for ; Wed, 18 Oct 2017 10:42:21 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by sainfoin-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9IHgIGs033009; Wed, 18 Oct 2017 19:42:18 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 195EC2069FF; Wed, 18 Oct 2017 19:42:18 +0200 (CEST) Received: from muguet1.intra.cea.fr (muguet1.intra.cea.fr [132.166.192.6]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 0B8972068AF; Wed, 18 Oct 2017 19:42:18 +0200 (CEST) Received: from [132.166.84.78] ([132.166.84.78]) by muguet1.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9IHgGKH026372; Wed, 18 Oct 2017 19:42:17 +0200 To: "Bernie Volz (volz)" Cc: "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: Date: Wed, 18 Oct 2017 19:42:16 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 17:42:26 -0000 Le 18/10/2017 à 18:31, Bernie Volz (volz) a écrit : > Actually, the guidance is already there? See section 13.1. > > * If the server receives the message directly from the client and > the source address in the IP datagram in which the message was > received is a link-local address, then the client is on the > same link to which the interface over which the message was > received is attached. > > * If the server receives the message directly from the client and > the source address in the IP datagram in which the message was > received is not a link-local address, then the client is on the > link identified by the source address in the IP datagram (note > that this situation can occur only if the server has enabled > the use of unicast message delivery by the client and the > client has sent a message for which unicast delivery is > allowed). That is useful guidance if the question was about on which link this Client was. In my case the link involves GTP, UDPv4 and IPv6. But I need guidance to the following question: if the Client sends a Solicit with a LL in src, MUST the Server reply to it? (yes/no is the needed guidance). I explain why: about 4 distinct clients use LL in src. If I want these clients to use GUA then I must delete the LL from the interface. Alex > > In the relay case, the client's source address doesn't really come into play at all. So, in the case technically the client could use either. But since the client has no idea whether a relay will be present, it should follow these rules. > > The document has been submitted to the AD for publication. If you have concerns or issues, you can always make the AD aware of these or await the IETF Last-Call period to raise your issues. > > - Bernie > > -----Original Message----- > From: Alexandre Petrescu [mailto:alexandre.petrescu@gmail.com] > Sent: Wednesday, October 18, 2017 12:01 PM > To: Bernie Volz (volz) > Cc: dhcwg@ietf.org > Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA > > > > Le 18/10/2017 à 16:25, Bernie Volz (volz) a écrit : >> Hi Alex: >> >> Does it really matter what the Client’s source address > > Yes it is guidance that I need. > > Alex > > is as long as >> the client can receive packets sent to that address (by a relay or >> server that is on that link)? These are link-local packets and so no >> router should be involved in them (that’s what the relay agent is >> there for – to forward the packets to servers not on the local >> link). >> >> - Bernie >> >> On 10/18/17, 10:06 AM, "Alexandre Petrescu" >> wrote: >> >> Bernie, >> >> Le 13/07/2017 à 19:38, Bernie Volz (volz) a écrit : [...] >> >>> Regarding Link Local vs GLA in Solicit, I think following the >>> specification would be recommended. Use link-local. >> >> But the I-D 3315bis says this: >>> Clients and servers exchange DHCP messages using UDP [RFC0768]. >>> The client uses a link-local address or addresses determined >>> through other mechanisms for transmitting and receiving DHCP >>> messages. >> ^^^^^^^^^^^^^^^^ >> >> This "other mechanisms" means that a GUA generated with SLAAC could >> be used as an src in a DHCPv6 Solicit. >> >> >> [...] >>> Note also that section 13.1 (for the unicast, GLA case) assumes >>> the message was not multicast (section 18.4 about UseMulticast >>> Status talks about "Reception of Unicast Messages"). >> >> Hm, that lokks like a relatively less explicit if not outright >> silent assumption(?) Or maybe I did not look well enough in the >> I-D? >> >> There is a particular equipment manufacturer's simulator software, >> and potentially real hardware, that uses GUA in src and dst multicast >> with link scope ff02::1:2.547, in the DHCPv6 Solicit. >> >> If this behaviour is standard (src GUA and dst ff02::1:2) then it >> should be in the draft. If it's not standard: it should get >> corrected in the simulated and in the real implementation. >> >> Because other software than the one from the particular equipment >> manufacturer uses src LL and dst ff02::1:2. >> >> Side note: >> >>> I think section 13.1 was written with the assumption that >>> determining the destination address of a packet is harder than >>> obtaining the source address; hence the assumption is that if a GLA >>> is used as the source address, it was not a multicast [to the >>> link-local multicast address]. Today, kernels typically provide the >>> ability to get the destination address, not just the source address >>> (though it takes a bit more code to do so). >> >> The picture may be different on point-to-point links like cellular >> links. It's multicast, but it's just two nodes and they are always >> seeing each other. Besides, one of the nodes allocates an address >> to the other node by other means than SLAAC, and it knows it. >> >> Alex >> >>> >>> >>>> I can say e.g. some (I believe Cisco) client puts a GUA in the >>>> src of aDHCPv6 Solicit. >>> >>> That's a bit of a broad statement as Cisco has many different >>> devices (and many different operating systems and versions) ... >>> perhaps if you could indicate which device(s) and software versions >>> you've found this to be the behavior on, I can perhaps follow up. >>> >>> I will also add that in many cases when devices are doing DHCPv6, >>> they will only have a LL so it may also depend on the network >>> configuration. >>> >>> - Bernie >>> >>> -----Original Message----- From: Alexandre Petrescu >>> [mailto:alexandre.petrescu@gmail.com] Sent: Thursday, July 13, >>> 2017 12:01 PM To: Bernie Volz (volz) Cc: >>> dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: >>> draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix >>> Delegation >>> >>> Bernie, >>> >>> Le 12/07/2017 à 23:33, Bernie Volz (volz) a écrit : >>>> Hi: >>>> >>>>> What is the Hop Limit that a Solicit should contain in the >>>>> IPv6 header? >>>> >>>> ND uses hop limit of 255 so the destination can check that it is >>>> 255 on receipt (whereas 1 could have been anything and forwarded >>>> many times). >>>> >>>> But I'm not sure if that is a the best practice when you don't >>>> want the packet forwarded. I would think that if the destination >>>> is a link-local multicast, it really doesn't matter as nothing >>>> should forward the packet (and if something is misconfigured to >>>> forward the packet, you're probably in deeper trouble than just >>>> with DHCPv6). >>>> >>>> RFC 4861 has: >>>> >>>> 11.2. Securing Neighbor Discovery Messages >>>> >>>> The protocol reduces the exposure to the above threats in the >>>> absence of authentication by ignoring ND packets received from >>>> off-link senders. The Hop Limit field of all received packets >>>> is verified to contain 255, the maximum legal value. Because >>>> routers decrement the Hop Limit on all packets they forward, >>>> received packets containing a Hop Limit of 255 must have >>>> originated from a neighbor. >>>> >>>> I don't know off hand if there's any place this is documented >>>> (what to use for hop limit with link-local). >>> >>> I think your explanation makes sense about ND. >>> >>> But, about DHCP, I need to know whether a DHCP Solicit with >>> HopLimit 1 is valid or not. >>> >>> As I said earlier, some DHCP clients set it at 255 whereas others >>> at 1. >>> >>> In some setting, the DHCP Solicit is encapsulated in IPv4. Some >>> of the decapsulation RFCs say that the HopLimit is decremented. >>> >>> In that setting, it is not clear whether decrementing the hop >>> limit happens, or not. >>> >>> But I want to make sure the client which sets HopLimit at 1 >>> (odhcp6c) is the right way to do. >>> >>> I think a good place to clarify this is in the DHCP spec. >>> >>> The spec could say that the HopLimit has some preferred value. >>> >>>>> Is IA_NA with empty fields a valid option in a Prefix >>>>> Delegation Solicit, or must IA_NA be absent altogether? (the >>>>> intention is to only request the Prefix, because the address >>>>> comes from RA). >>>> >>>> Not sure what an "empty" IA_NA is. Whether you include an IA_NA >>>> or not with IA_PD is the client's choice. If it what's an >>>> address (such as for management) on the upstream link, than it >>>> should include an IA_NA. This is covered in the text in 6.3 >>>> (IA_PD only) vs 6.4 (IA_PD and IA_NA, typically). >>> >>> Noted. >>> >>>>> Is ORO with empty fields illegal in a Prefix Delegation >>>>> Solicit? (the intention is to get the DNS server from RA, but >>>>> some client puts an empty ORO there). >>>> >>>> An empty ORO is fine (it should not cause problems, but is >>>> obviously useless). Though if they are following the rfc3315bis >>>> and doing what they should, there would not be an empty ORO. >>> >>> Noted. >>> >>>>> Is it ok to use a GUA in the src address of a Solicit Prefix >>>>> Delegation? >>>> >>>> See 13.1 of draft-ietf-dhc-rfc3315bis-09 ... the source address >>>> here should be link-local. >>> >>> Well, that contradicts some trial. >>> >>> I can say e.g. some (I believe Cisco) client puts a GUA in the src >>> of a DHCPv6 Solicit. Other DHCP clients have this optional between >>> LLA or GUA. The operator I work with wants it to be a GUA. >>> >>> As such, I dont know what is the way forward: should the spec get >>> updated? shoudl the operator change? should the Cisco >>> implementation change? >>> >>> Alex >>> >> >> From nobody Wed Oct 18 10:55:45 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B84CA13300C for ; Wed, 18 Oct 2017 10:55:44 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.6 X-Spam-Level: X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=fugue-com.20150623.gappssmtp.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4CJtaoRuygwq for ; Wed, 18 Oct 2017 10:55:43 -0700 (PDT) Received: from mail-it0-x230.google.com (mail-it0-x230.google.com [IPv6:2607:f8b0:4001:c0b::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id F2566132C2A for ; Wed, 18 Oct 2017 10:55:42 -0700 (PDT) Received: by mail-it0-x230.google.com with SMTP id o135so6938675itb.0 for ; Wed, 18 Oct 2017 10:55:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fugue-com.20150623.gappssmtp.com; s=20150623; h=from:message-id:mime-version:subject:date:in-reply-to:cc:to :references; bh=NcfoySVKw7mgpMxG3Ga0WwTWuMUPQ3+gFpFVgATWhMc=; b=gINyWkDeVIXvMU1vkn1Ev/kpWlOe0dJrOBeh4QkBkvaN2uk6g91ZQvmgMfUTXcUhMr VPl4x07n4DYGEOGQOXEgo5LZEPnxV+qHulyZCGtvixwJ9RLxSZXkwL4x8dbWHU7qIiqU K7NGudC96e571U/cUvTQAmtOQU1Oyfa3+y8WQ5u/Nej4xVNyo/73VBkWZ57sLYsSxC1J UXRBIHyD8yNr7fmQZUw4LegELF+K4aVEX5in9bqqn5Uy3Q38beuTvrj4/slemJ3JgSg2 hcvyLwndF5hzoaU3VKXxKrQrHnOXbQ/8sb3FA25FeUuCF28PhARaQSHEBS2d/uBlfwoZ 3F+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:message-id:mime-version:subject:date :in-reply-to:cc:to:references; bh=NcfoySVKw7mgpMxG3Ga0WwTWuMUPQ3+gFpFVgATWhMc=; b=UZ78Ex6f1sqAgjcvKeKdFtqH5ZojECKBFGsje1ReVHoIBJ8/qqmc1v8WGkcGkloItj GUElTFO58VNOwguqMyTj0km0kgSJyPQv8a6DKmobNA5faio/WbGsfTsQ0N0q5OWYPLD4 8yLbt2epJozMPx7ffBecNFZvTzutkCJtaqknr6iia+/WwNOxVlLzEK6Fqp69mesACXoW pUjZM0b7yYk3hl1kBeiRNt/SFAOcFUbEyMsoeIjsChvoNMdTZ5B37Q50WEZRp1R8wqab jujOBjOgwyGU7tQ1/Ezc+BV0Pi8CKMWPZnPYoYjlAVnmCBBQ3ga1DzqC73LsxZD2hysV ShNw== X-Gm-Message-State: AMCzsaUCITnEmpqfI9bySdJ1DzwTxMm3vRRrCiCsAJD9JMVtp1PZet0z 0CgiMxnjgqhQx7rrpxUch3pSjg== X-Google-Smtp-Source: ABhQp+RDsmI4z8L3rHhDB3bDnUir7q2waYe+NTAXbdtbLjpdAIsd5rGvV2ew3Bn1SivsBxY1eXFWQA== X-Received: by 10.36.91.138 with SMTP id g132mr10379940itb.33.1508349342290; Wed, 18 Oct 2017 10:55:42 -0700 (PDT) Received: from [172.19.0.235] ([75.104.72.60]) by smtp.gmail.com with ESMTPSA id p15sm6623723itc.41.2017.10.18.10.55.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Oct 2017 10:55:41 -0700 (PDT) From: Ted Lemon Message-Id: <71C2ED41-43A2-45DD-AFC8-A58C9E794FE9@fugue.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_160F8249-4F90-4D66-ABDB-DF54F855DDCF" Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Date: Wed, 18 Oct 2017 10:55:26 -0700 In-Reply-To: Cc: "Bernie Volz (volz)" , "dhcwg@ietf.org" To: Alexandre Petrescu References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> X-Mailer: Apple Mail (2.3273) Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 17:55:45 -0000 --Apple-Mail=_160F8249-4F90-4D66-ABDB-DF54F855DDCF Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On Oct 18, 2017, at 10:42 AM, Alexandre Petrescu = wrote: > But I need guidance to the following question: if the Client sends a = Solicit with a LL in src, MUST the Server reply to it? (yes/no is the = needed guidance). I don't know what the spec says off the top of my head, but if the = server doesn't respond, the client will keep asking, so this seems like = a bad idea. > I explain why: about 4 distinct clients use LL in src. If I want = these clients to use GUA then I must delete the LL from the interface. The server not responding is not going to help with this. --Apple-Mail=_160F8249-4F90-4D66-ABDB-DF54F855DDCF Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii On Oct 18, 2017, at 10:42 AM, Alexandre Petrescu <alexandre.petrescu@gmail.com> wrote:
But I need guidance to the following = question: if the Client sends a Solicit with a LL in src, MUST the = Server reply to it?  (yes/no is the needed guidance).

I don't know = what the spec says off the top of my head, but if the server doesn't = respond, the client will keep asking, so this seems like a bad = idea.

I explain why: about 4 distinct clients use LL = in src.  If I want these clients to use GUA then I must delete the = LL from the interface.

The server not responding is not going to help with = this.

= --Apple-Mail=_160F8249-4F90-4D66-ABDB-DF54F855DDCF-- From nobody Wed Oct 18 10:57:25 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C5E14132C2A for ; Wed, 18 Oct 2017 10:57:23 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.7 X-Spam-Level: X-Spam-Status: No, score=-1.7 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.199, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=no autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id v4ntFw6A20QH for ; Wed, 18 Oct 2017 10:57:22 -0700 (PDT) Received: from mail-qt0-x22d.google.com (mail-qt0-x22d.google.com [IPv6:2607:f8b0:400d:c0d::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8D807132D89 for ; Wed, 18 Oct 2017 10:57:22 -0700 (PDT) Received: by mail-qt0-x22d.google.com with SMTP id v41so11298819qtv.12 for ; Wed, 18 Oct 2017 10:57:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=JkdaPapPeBGcwTHxAilhJhBHmtWS7CxwChIw0AjIkX0=; b=TOK2zQqrcF2oIn5/BeYbWuU7xlBu1X6Pk7g+bUYCt4VZUEYOXPZWNQI4WddSzoEQ4W 361HwE2Nn+aWPw6rnEz2/MAsHTs6R7qItT0MrQKSmtoV50R8Ncpp7+GNv6s80RM2YFHK +LIClapG+kb/Dr6LzJQK8BW5OAye62BRa5qEuMwdbg0w1H+AKHKukTwj9K9SpqBLUZdR tFv2nBvAP+XYYBZWpQJW3WELemEHbiYyj2KdlYY5K6VSbw/giOjEvZOIQWwFkhJ2EMH3 IDVoaPrgiSMioAu+uIdIjnDdgxIFhBonBDFoWIQM4jGiqgup7lvAIfy+J7W6lLZr4kxr mxzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=JkdaPapPeBGcwTHxAilhJhBHmtWS7CxwChIw0AjIkX0=; b=ec37xHqvDrW7SXNqakaxPW2Aif+EWUGCiFADdNAcoTr5ROI3gu8E5pTPXJNpmw0lhJ q/QKm5D/2rgde/31KqNezBYMhrb934M2X2cBeNArmw3JVBCRFFmTZ7dFi7eQQFZla4n3 qIrhth2QsOgSMJ1Djf6BvWtc4UEzsLkpJmKmg1b6SOaucpaEKHJlMO0dmUQ7MzXemQ5V dLHsRXFlTtuXVyKF4f7W5qP+pj2d/C225vvmNQcqrEJoVBszhttaDH5/p1Fb1zyy7f7o yMFtp3bxhmlCuQur9FnVLyp96h/jEyw2AfZ5n52iL4fDydVfSi1a+mwannG4C4/e5hK+ CHQA== X-Gm-Message-State: AMCzsaWMrdADd28vyOTBSBC4ghd7qjI2REJQrXq/lX7G/prIwEfbeyTy WSr0h/nOLp6ZynDpJnb1S2ZrHxwbUrcKYikWNjXoTw2I X-Google-Smtp-Source: ABhQp+S1IHEAAOzszdeuwgkOGmo6XbX0tUMwqZj3/c/Ej6uUHMLzK56bKSNV4dTo9wcVi4Lz6x5svg8cgcSsRLWsZf0= X-Received: by 10.237.36.5 with SMTP id r5mr4420438qtc.339.1508349441533; Wed, 18 Oct 2017 10:57:21 -0700 (PDT) MIME-Version: 1.0 Sender: jinmei.tatuya@gmail.com Received: by 10.237.61.137 with HTTP; Wed, 18 Oct 2017 10:57:20 -0700 (PDT) In-Reply-To: References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> From: =?UTF-8?B?56We5piO6YGU5ZOJ?= Date: Wed, 18 Oct 2017 10:57:20 -0700 X-Google-Sender-Auth: S9CcrDrFVzHWipQL6lDHwKlPJIA Message-ID: To: Alexandre Petrescu Cc: "Bernie Volz (volz)" , "dhcwg@ietf.org" Content-Type: text/plain; charset="UTF-8" Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 17:57:24 -0000 At Wed, 18 Oct 2017 19:42:16 +0200, Alexandre Petrescu wrote: > > * If the server receives the message directly from the client and > > the source address in the IP datagram in which the message was > > received is a link-local address, then the client is on the > > same link to which the interface over which the message was > > received is attached. > That is useful guidance if the question was about on which link this > Client was. In my case the link involves GTP, UDPv4 and IPv6. > > But I need guidance to the following question: if the Client sends a > Solicit with a LL in src, MUST the Server reply to it? (yes/no is the > needed guidance). I don't see the need for such guidance, at least as part of rfc3315bis. What's your problem if we didn't have such guidance in normative text like a "MUST"? > I explain why: about 4 distinct clients use LL in src. If I want these > clients to use GUA then I must delete the LL from the interface. This one itself doesn't sound like a problem. Do you have any specific problem with the clients sending a solicit from a link-local address? -- jinmei From nobody Wed Oct 18 11:13:12 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8B46213303F for ; Wed, 18 Oct 2017 11:13:11 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.52 X-Spam-Level: X-Spam-Status: No, score=-14.52 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 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15.00.1320.000; Wed, 18 Oct 2017 13:13:07 -0500 From: "Bernie Volz (volz)" To: Alexandre Petrescu CC: "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSBpFO3Bh3/i+xk+Llo298YhKFKLpuoSAgABdvgD//7IAAIAAajsA//+x0nA= Date: Wed, 18 Oct 2017 18:13:07 +0000 Message-ID: <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: 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Wed Oct 18 13:03:35 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D3E0513321F for ; Wed, 18 Oct 2017 13:03:33 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.633 X-Spam-Level: X-Spam-Status: No, score=-2.633 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3_oz3iQWdyR7 for ; Wed, 18 Oct 2017 13:03:32 -0700 (PDT) Received: from sainfoin-smtp-out.extra.cea.fr (sainfoin-smtp-out.extra.cea.fr [132.167.192.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 30E2713308A for ; Wed, 18 Oct 2017 13:03:31 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by sainfoin-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9IK3RH1017448; Wed, 18 Oct 2017 22:03:27 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id EF555206A8A; Wed, 18 Oct 2017 22:03:27 +0200 (CEST) Received: from muguet1.intra.cea.fr (muguet1.intra.cea.fr [132.166.192.6]) by pisaure.intra.cea.fr (Postfix) with ESMTP id DF6CF2069A2; Wed, 18 Oct 2017 22:03:27 +0200 (CEST) Received: from [132.166.84.78] ([132.166.84.78]) by muguet1.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9IK3Qsb026968; Wed, 18 Oct 2017 22:03:27 +0200 To: =?UTF-8?B?56We5piO6YGU5ZOJ?= Cc: "Bernie Volz (volz)" , "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: Date: Wed, 18 Oct 2017 22:03:26 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 20:03:34 -0000 Le 18/10/2017 à 19:57, 神明達哉 a écrit : > At Wed, 18 Oct 2017 19:42:16 +0200, Alexandre Petrescu > wrote: > >>> * If the server receives the message directly from the client >>> and the source address in the IP datagram in which the message >>> was received is a link-local address, then the client is on the >>> same link to which the interface over which the message was >>> received is attached. > >> That is useful guidance if the question was about on which link >> this Client was. In my case the link involves GTP, UDPv4 and >> IPv6. >> >> But I need guidance to the following question: if the Client sends >> a Solicit with a LL in src, MUST the Server reply to it? (yes/no >> is the needed guidance). > > I don't see the need for such guidance, at least as part of > rfc3315bis. What's your problem if we didn't have such guidance in > normative text like a "MUST"? The problem is the following: exchange between Client and Server does not work. CLient believes it needs to send LL in src, whereas Server believes the Client should use GUA in src. There are other fields on which the problem may reside (port number, IA_ID, and others); each needs separate treatment. That's a problem. With respect to GUA-vs-LL in src there is no guidance in 3315bis. If one wants to change this, i.e. make sure Server to accept LL in src of Solicit, then one typically is suggested to first come with an actual business impact. That is not normal. Either LL-in-src MUST be accepted at Server as a standard, or MUST NOT. It's not a matter of business impact. We can turn around phrases as much as we want, but interoperability is not there. >> I explain why: about 4 distinct clients use LL in src. If I want >> these clients to use GUA then I must delete the LL from the >> interface. > > This one itself doesn't sound like a problem. Do you have any > specific problem with the clients sending a solicit from a > link-local address? With respect, I think you did not understand what I wrote. Please re-read. Myself I dont have a problem with Clients sending Solicit with src-LL. But Server MAY have a problem. Because the example traces of Server I have always uses GUA-in-src. I dont want to follow that example, but I cant tell the Server's Programmer that is not standard. Because there is no guidance. To come back to my question: do you think it is ok to delete the LL from the interface? Alex > > -- jinmei > From nobody Wed Oct 18 13:08:29 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C47BF13432C for ; Wed, 18 Oct 2017 13:08:28 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.632 X-Spam-Level: X-Spam-Status: No, score=-2.632 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0KjXrpz69DlH for ; Wed, 18 Oct 2017 13:08:26 -0700 (PDT) Received: from cirse-smtp-out.extra.cea.fr (cirse-smtp-out.extra.cea.fr [132.167.192.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D502F13308A for ; Wed, 18 Oct 2017 13:08:25 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by cirse-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9IK8Mrn036069; Wed, 18 Oct 2017 22:08:22 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 07960206A75; Wed, 18 Oct 2017 22:08:22 +0200 (CEST) Received: from muguet1.intra.cea.fr (muguet1.intra.cea.fr [132.166.192.6]) by pisaure.intra.cea.fr (Postfix) with ESMTP id EDA26206789; Wed, 18 Oct 2017 22:08:21 +0200 (CEST) Received: from [132.166.84.78] ([132.166.84.78]) by muguet1.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9IK8L2a028116; Wed, 18 Oct 2017 22:08:21 +0200 To: "Bernie Volz (volz)" Cc: "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: Date: Wed, 18 Oct 2017 22:08:19 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 20:08:29 -0000 Le 18/10/2017 à 20:13, Bernie Volz (volz) a écrit : >> But I need guidance to the following question: if the Client sends >> a Solicit with a LL in src, MUST the Server reply to it? (yes/no >> is the needed guidance). > > A server may not respond to a client for a variety of reasons, but > we'll assume none of those apply here (hence "MUST" is dangerous). > > I don't see why a server would drop a Solicit just because there is a > LL in src -- I would think that would be the NORMAL case and hence > the server would respond. (Of course, we assume that LL is valid here > and can be used.) Again, the NORMAL case for this particular Server, is to show GUA-in-src, not LL-in-src. It is a simulator from a large equipment manufacturer. That simulator is pretended to work accordingly to the real network. > I could see that if a client used a GLA and the server was the first > hop (no relay), it could drop it if the GLA address as it could mean > it has no configuration for that "location". Remember the text from > 13.1: > >> * If the server receives the message directly from the client and >> the source address in the IP datagram in which the message was >> received is not a link-local address, then the client is on the >> link identified by the source address in the IP datagram (note that >> this situation can occur only if the server has enabled the use of >> unicast message delivery by the client and the client has sent a >> message for which unicast delivery is allowed). > > Also, some servers could respond with Use Multicast unless > server-unicast option has been configured. It may be that they use > the source address to determine this (rather than the destination > address, which as you say really should be used when server receives > packet directly)? > > > I'm confused as I think you are saying in: > >> I explain why: about 4 distinct clients use LL in src. If I want >> these clients to use GUA then I must delete the LL from the >> interface. > > That you actually want the global unicast address to be used by the > client, not the link-local? I want to not modify the Clients. The 4 Clients all use LL-in-src. But the Server examples use GUA-in-src. A Server example is a packet trace executed on a simulator that pretends to be like in reality. That simulator uses GUA-in-src. So, I am told, if I want to be interoperable to that Server, I must do what that simulator does: put GUA-in-src. So I delete the LL from the interface on the Client. Do you think it is normal to delete the LL from the interface? > For what it is worth, the server I work on doesn't care what the > client's source address is. We monitor the destination address (when > packet is received). "Does not care" - ok. But does it accept a Solicit with LL-in-src? Alex > > - Bernie > > -----Original Message----- From: Alexandre Petrescu > [mailto:alexandre.petrescu@gmail.com] Sent: Wednesday, October 18, > 2017 1:42 PM To: Bernie Volz (volz) Cc: > dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: > draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix > Delegation - src LL vs GUA > > > > Le 18/10/2017 à 18:31, Bernie Volz (volz) a écrit : >> Actually, the guidance is already there? See section 13.1. >> >> * If the server receives the message directly from the client and >> the source address in the IP datagram in which the message was >> received is a link-local address, then the client is on the same >> link to which the interface over which the message was received is >> attached. >> >> * If the server receives the message directly from the client and >> the source address in the IP datagram in which the message was >> received is not a link-local address, then the client is on the >> link identified by the source address in the IP datagram (note that >> this situation can occur only if the server has enabled the use of >> unicast message delivery by the client and the client has sent a >> message for which unicast delivery is allowed). > > That is useful guidance if the question was about on which link this > Client was. In my case the link involves GTP, UDPv4 and IPv6. > > But I need guidance to the following question: if the Client sends a > Solicit with a LL in src, MUST the Server reply to it? (yes/no is > the needed guidance). > > I explain why: about 4 distinct clients use LL in src. If I want > these clients to use GUA then I must delete the LL from the > interface. > > Alex > >> >> In the relay case, the client's source address doesn't really come >> into play at all. So, in the case technically the client could use >> either. But since the client has no idea whether a relay will be >> present, it should follow these rules. >> >> The document has been submitted to the AD for publication. If you >> have concerns or issues, you can always make the AD aware of these >> or await the IETF Last-Call period to raise your issues. >> >> - Bernie >> >> -----Original Message----- From: Alexandre Petrescu >> [mailto:alexandre.petrescu@gmail.com] Sent: Wednesday, October 18, >> 2017 12:01 PM To: Bernie Volz (volz) Cc: >> dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: >> draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix >> Delegation - src LL vs GUA >> >> >> >> Le 18/10/2017 à 16:25, Bernie Volz (volz) a écrit : >>> Hi Alex: >>> >>> Does it really matter what the Client’s source address >> >> Yes it is guidance that I need. >> >> Alex >> >> is as long as >>> the client can receive packets sent to that address (by a relay >>> or server that is on that link)? These are link-local packets and >>> so no router should be involved in them (that’s what the relay >>> agent is there for – to forward the packets to servers not on the >>> local link). >>> >>> - Bernie >>> >>> On 10/18/17, 10:06 AM, "Alexandre Petrescu" >>> wrote: >>> >>> Bernie, >>> >>> Le 13/07/2017 à 19:38, Bernie Volz (volz) a écrit : [...] >>> >>>> Regarding Link Local vs GLA in Solicit, I think following the >>>> specification would be recommended. Use link-local. >>> >>> But the I-D 3315bis says this: >>>> Clients and servers exchange DHCP messages using UDP >>>> [RFC0768]. The client uses a link-local address or addresses >>>> determined through other mechanisms for transmitting and >>>> receiving DHCP messages. >>> ^^^^^^^^^^^^^^^^ >>> >>> This "other mechanisms" means that a GUA generated with SLAAC >>> could be used as an src in a DHCPv6 Solicit. >>> >>> >>> [...] >>>> Note also that section 13.1 (for the unicast, GLA case) >>>> assumes the message was not multicast (section 18.4 about >>>> UseMulticast Status talks about "Reception of Unicast >>>> Messages"). >>> >>> Hm, that lokks like a relatively less explicit if not outright >>> silent assumption(?) Or maybe I did not look well enough in the >>> I-D? >>> >>> There is a particular equipment manufacturer's simulator >>> software, and potentially real hardware, that uses GUA in src and >>> dst multicast with link scope ff02::1:2.547, in the DHCPv6 >>> Solicit. >>> >>> If this behaviour is standard (src GUA and dst ff02::1:2) then >>> it should be in the draft. If it's not standard: it should get >>> corrected in the simulated and in the real implementation. >>> >>> Because other software than the one from the particular >>> equipment manufacturer uses src LL and dst ff02::1:2. >>> >>> Side note: >>> >>>> I think section 13.1 was written with the assumption that >>>> determining the destination address of a packet is harder than >>>> obtaining the source address; hence the assumption is that if a >>>> GLA is used as the source address, it was not a multicast [to >>>> the link-local multicast address]. Today, kernels typically >>>> provide the ability to get the destination address, not just >>>> the source address (though it takes a bit more code to do so). >>> >>> The picture may be different on point-to-point links like >>> cellular links. It's multicast, but it's just two nodes and they >>> are always seeing each other. Besides, one of the nodes >>> allocates an address to the other node by other means than SLAAC, >>> and it knows it. >>> >>> Alex >>> >>>> >>>> >>>>> I can say e.g. some (I believe Cisco) client puts a GUA in >>>>> the src of aDHCPv6 Solicit. >>>> >>>> That's a bit of a broad statement as Cisco has many different >>>> devices (and many different operating systems and versions) >>>> ... perhaps if you could indicate which device(s) and software >>>> versions you've found this to be the behavior on, I can perhaps >>>> follow up. >>>> >>>> I will also add that in many cases when devices are doing >>>> DHCPv6, they will only have a LL so it may also depend on the >>>> network configuration. >>>> >>>> - Bernie >>>> >>>> -----Original Message----- From: Alexandre Petrescu >>>> [mailto:alexandre.petrescu@gmail.com] Sent: Thursday, July 13, >>>> 2017 12:01 PM To: Bernie Volz (volz) Cc: >>>> dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: >>>> draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit >>>> Prefix Delegation >>>> >>>> Bernie, >>>> >>>> Le 12/07/2017 à 23:33, Bernie Volz (volz) a écrit : >>>>> Hi: >>>>> >>>>>> What is the Hop Limit that a Solicit should contain in the >>>>>> IPv6 header? >>>>> >>>>> ND uses hop limit of 255 so the destination can check that it >>>>> is 255 on receipt (whereas 1 could have been anything and >>>>> forwarded many times). >>>>> >>>>> But I'm not sure if that is a the best practice when you >>>>> don't want the packet forwarded. I would think that if the >>>>> destination is a link-local multicast, it really doesn't >>>>> matter as nothing should forward the packet (and if something >>>>> is misconfigured to forward the packet, you're probably in >>>>> deeper trouble than just with DHCPv6). >>>>> >>>>> RFC 4861 has: >>>>> >>>>> 11.2. Securing Neighbor Discovery Messages >>>>> >>>>> The protocol reduces the exposure to the above threats in >>>>> the absence of authentication by ignoring ND packets received >>>>> from off-link senders. The Hop Limit field of all received >>>>> packets is verified to contain 255, the maximum legal value. >>>>> Because routers decrement the Hop Limit on all packets they >>>>> forward, received packets containing a Hop Limit of 255 must >>>>> have originated from a neighbor. >>>>> >>>>> I don't know off hand if there's any place this is >>>>> documented (what to use for hop limit with link-local). >>>> >>>> I think your explanation makes sense about ND. >>>> >>>> But, about DHCP, I need to know whether a DHCP Solicit with >>>> HopLimit 1 is valid or not. >>>> >>>> As I said earlier, some DHCP clients set it at 255 whereas >>>> others at 1. >>>> >>>> In some setting, the DHCP Solicit is encapsulated in IPv4. >>>> Some of the decapsulation RFCs say that the HopLimit is >>>> decremented. >>>> >>>> In that setting, it is not clear whether decrementing the hop >>>> limit happens, or not. >>>> >>>> But I want to make sure the client which sets HopLimit at 1 >>>> (odhcp6c) is the right way to do. >>>> >>>> I think a good place to clarify this is in the DHCP spec. >>>> >>>> The spec could say that the HopLimit has some preferred value. >>>> >>>>>> Is IA_NA with empty fields a valid option in a Prefix >>>>>> Delegation Solicit, or must IA_NA be absent altogether? >>>>>> (the intention is to only request the Prefix, because the >>>>>> address comes from RA). >>>>> >>>>> Not sure what an "empty" IA_NA is. Whether you include an >>>>> IA_NA or not with IA_PD is the client's choice. If it what's >>>>> an address (such as for management) on the upstream link, >>>>> than it should include an IA_NA. This is covered in the text >>>>> in 6.3 (IA_PD only) vs 6.4 (IA_PD and IA_NA, typically). >>>> >>>> Noted. >>>> >>>>>> Is ORO with empty fields illegal in a Prefix Delegation >>>>>> Solicit? (the intention is to get the DNS server from RA, >>>>>> but some client puts an empty ORO there). >>>>> >>>>> An empty ORO is fine (it should not cause problems, but is >>>>> obviously useless). Though if they are following the >>>>> rfc3315bis and doing what they should, there would not be an >>>>> empty ORO. >>>> >>>> Noted. >>>> >>>>>> Is it ok to use a GUA in the src address of a Solicit >>>>>> Prefix Delegation? >>>>> >>>>> See 13.1 of draft-ietf-dhc-rfc3315bis-09 ... the source >>>>> address here should be link-local. >>>> >>>> Well, that contradicts some trial. >>>> >>>> I can say e.g. some (I believe Cisco) client puts a GUA in the >>>> src of a DHCPv6 Solicit. Other DHCP clients have this optional >>>> between LLA or GUA. The operator I work with wants it to be a >>>> GUA. >>>> >>>> As such, I dont know what is the way forward: should the spec >>>> get updated? shoudl the operator change? should the Cisco >>>> implementation change? >>>> >>>> Alex >>>> >>> >>> From nobody Wed Oct 18 13:30:52 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 491F7133528 for ; Wed, 18 Oct 2017 13:30:51 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.4 X-Spam-Level: X-Spam-Status: No, score=-2.4 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.199, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id EEIIa-rkhChH for ; Wed, 18 Oct 2017 13:30:49 -0700 (PDT) Received: from mail-qk0-x234.google.com (mail-qk0-x234.google.com [IPv6:2607:f8b0:400d:c09::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 7D9C5132620 for ; Wed, 18 Oct 2017 13:30:49 -0700 (PDT) Received: by mail-qk0-x234.google.com with SMTP id k123so7882902qke.3 for ; Wed, 18 Oct 2017 13:30:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=aisuwFenq51Nio7kNO5/rv9nK/oWHSQwP6GfnrGjmL4=; b=VxjMYZOBudYmDLX8MkK8hafFN0x4RorrUJ9SFWC7ufRqTBjlEy0S7LgYVS7cRqpn5i U4lPa+AIFhCkF/cDS11eiNC1afFKoQmVCIc/26qZ3IBEEawD9QJp57T+7ADTaobYK3hV GtsOSWAYRvhj/4NDhCbllsFeG2G163atePGXurI8/4MRNlp/hPbUKv8dOUu8nNgCGKet 07VyFlLIrnCHE8vZmfkJ47/BACBA6raXNakuZ8SUAMLneIMAQwMOEFDHRwH3tiRIpEyQ y1VysvuoR2Kh0kIlGK40Ax8Rs11hpOH5pe3yFPihE4mxyDQ2sWNlYoosZnsXo39dwMY4 R4rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=aisuwFenq51Nio7kNO5/rv9nK/oWHSQwP6GfnrGjmL4=; b=UAamJwAjkK9T6QVjEzpTI1gWPltY0hpzwp8/qYypOf09DEwvH5+r2e0xAVHXWXjO4N onBhcCzKCSy18A5py56ucdKEVjCsywCR7gBslH5mlZTCh2MS+c5uc5eWBbraj0vqpmQG hNkeTvUy7yZ3G4bJmIW98I5yuhkCEKiSuRjoRbxhepbx2yXBOsn/mWdHX9R0OZQL2P1u wSoqBLlivz2rcS1L5sTN0sFN8grv71uoUqP6rLzWhwukAh30xBgrv82YfPNZD2PXJrHk FxU5j55oHulu75uvmBu6/AxXEagbki/AYN/yJUVBG/hbqnGDYxqCOJ65lAeiFXncoWNR 7Cwg== X-Gm-Message-State: AMCzsaWGSgJtLFj0j1tICR5GKxdFsLtXgTriOK5rEW8e8en6Tb+hCAJZ g1AxmjpbJRLk0TrLmcZ2W3ONKDVoV+jkVvmZ9gc= X-Google-Smtp-Source: ABhQp+T4WBUB41STgh+4ReTpc0PlwTFxpGJDzxR9IDkUR/xcuP1JPwDX35c8EsI8j91jiWrOOE8Ibc4Aw8rF2z/hkUE= X-Received: by 10.55.50.71 with SMTP id y68mr4380952qky.136.1508358647564; Wed, 18 Oct 2017 13:30:47 -0700 (PDT) MIME-Version: 1.0 Sender: jinmei.tatuya@gmail.com Received: by 10.237.61.137 with HTTP; Wed, 18 Oct 2017 13:30:46 -0700 (PDT) In-Reply-To: References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> From: =?UTF-8?B?56We5piO6YGU5ZOJ?= Date: Wed, 18 Oct 2017 13:30:46 -0700 X-Google-Sender-Auth: ltNmyHxarGZR3k_WwryBqJJQX0o Message-ID: To: Alexandre Petrescu Cc: "dhcwg@ietf.org" , "Bernie Volz (volz)" Content-Type: text/plain; charset="UTF-8" Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 20:30:51 -0000 At Wed, 18 Oct 2017 22:03:26 +0200, Alexandre Petrescu wrote: > >> But I need guidance to the following question: if the Client sends > >> a Solicit with a LL in src, MUST the Server reply to it? (yes/no > >> is the needed guidance). > > > > I don't see the need for such guidance, at least as part of > > rfc3315bis. What's your problem if we didn't have such guidance in > > normative text like a "MUST"? > > The problem is the following: exchange between Client and Server does > not work. CLient believes it needs to send LL in src, whereas Server > believes the Client should use GUA in src. There are other fields on > which the problem may reside (port number, IA_ID, and others); each > needs separate treatment. To me, it's just that the server implementation is broken. Unless the protocol specification explicitly imposes a limitation on the type of source addresses it shouldn't assume a limitation and refuse to accept packets that don't meet its proprietary assumption. Now, the question is whether a protocol specification needs to explicitly say that a server MUST NOT have such an assumption. I simply don't think so - we can't just add nearly obvious statement just because there is some broken implementation. I wouldn't be surprised if there is a broken DNS server implementation that doesn't respond to a query from an IPv6 link-local address, but I just don't think we should write an RFC that has "a DNS server MUST NOT drop a query from a link-local IPv6 address" just because of such a broken implementation. This case is no different from that to me. You seem to think it's worth noting in the protocol spec, but as far as I can see you have not successfully convinced the wg about the need for it. -- JINMEI, Tatuya From nobody Wed Oct 18 13:35:30 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 361021343C3 for ; Wed, 18 Oct 2017 13:35:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.52 X-Spam-Level: X-Spam-Status: No, score=-14.52 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost 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from xch-aln-003.cisco.com ([173.36.7.13]) by XCH-ALN-003.cisco.com ([173.36.7.13]) with mapi id 15.00.1320.000; Wed, 18 Oct 2017 15:35:09 -0500 From: "Bernie Volz (volz)" To: Alexandre Petrescu CC: "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSBpFO3Bh3/i+xk+Llo298YhKFKLpuoSAgABdvgD//7IAAIAAajsA//+x0nCAAHb8gP//rpBg Date: Wed, 18 Oct 2017 20:35:09 +0000 Message-ID: <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> 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(PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.633 X-Spam-Level: X-Spam-Status: No, score=-2.633 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pLli76tmgl_9 for ; Thu, 19 Oct 2017 02:07:41 -0700 (PDT) Received: from oxalide-smtp-out.extra.cea.fr (oxalide-smtp-out.extra.cea.fr [132.168.224.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D1FF4134826 for ; Thu, 19 Oct 2017 02:07:40 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by oxalide-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9J97aTK143094; Thu, 19 Oct 2017 11:07:36 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 55199206E05; Thu, 19 Oct 2017 11:07:36 +0200 (CEST) Received: from muguet2.intra.cea.fr (muguet2.intra.cea.fr [132.166.192.7]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 473F4206DD6; Thu, 19 Oct 2017 11:07:36 +0200 (CEST) Received: from [10.8.34.184] (is227335.intra.cea.fr [10.8.34.184]) by muguet2.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9J97ZVk009719; Thu, 19 Oct 2017 11:07:35 +0200 To: "Bernie Volz (volz)" Cc: "dhcwg@ietf.org" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> Date: Thu, 19 Oct 2017 11:07:35 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Oct 2017 09:07:43 -0000 Le 18/10/2017 à 22:35, Bernie Volz (volz) a écrit : > The server vendor is in error here ... as far as I know, clients use > the link-local address. Noted. I will continue using the LL address in src of DHCPv6 Solicit. > The issue for the server vendor may be then how does the server tell > where the client is ... and, in that case, you do what was done for > DHCPv4 before -- you use the (non link-local) address of the > interface on which the request was received (since that it the > network on which the client is located). That's exactly what section > 13.1 states: > >>> * If the server receives the message directly from the client >>> and the source address in the IP datagram in which the message >>> was received is a link-local address, then the client is on the >>> same link to which the interface over which the message was >>> received is attached. > > Note that the DHCP Client test equipment vendor also appears not to > be following standard transmission rules (i.e., to use a link-local > address). But, you haven't indicated (I don't think) what the > destination address for these DHCPv6 requests are - perhaps they > were configured to be a GUA (and then it makes sense for the clients > to use a GUA). The dst address is the link-scoped multicast address. The capture of address header of a successful DHCPv6 Solicit and DHCPv6 Advertise executed on a simulator client and simulator server is the following: GUA_prefix::2:0:0:4e:2201.546 > ff02::1:2.547: [udp sum ok] [...] fe80::IID.547 > GUA_prefix::2:0:0:4e:2201.546: [udp sum ok] > To summarize: - If destination of client is link-local [multicast] > address, source SHOULD be link-local. Agreed. > (This probably could be a MUST but there might be some odd instances > where this is not appropriate - such as point-to-point links. These odd instances should be described. > Note also that I don't think there's a restriction that a source > address may have wider scope than a destination address.) I think there may be an RFC about matching scopes of addresses in a same packet. > - If destination of client is GLA, source MUST be GLA (otherwise, > replies cannot be returned to the client). But the dst of a Solicit MUST NOT be a GLA (what I call GUA: Globally-Unique Address). [...] > Again, the NORMAL case for this particular Server, is to show > GUA-in-src, not LL-in-src. It is a simulator from a large equipment > manufacturer. That simulator is pretended to work accordingly to the > real network. > > BV> This seems wrong on the simulator's part. But again, please > specify what the destination address is. It is ff02::1:2.547. [...] >> I could see that if a client used a GLA and the server was the >> first hop (no relay), YEs, the Server and Client are normally 'on the same link'. There is no Relay. However, that link is not the typical Ethernet link. It is a cellular link. This link has the following nodes: User Equipment, eNodeB, SGW and PGW. The protocol on User Equipment is native IPv6. But this is encapsulated by SGW and PGW in another protocol called GTP. The GTP protocol is an IPv4 protocol. Further, it is an UDP protocol too. >> it could drop it if the GLA address as it could mean it has no >> configuration for that "location". Remember the text from 13.1: >> >>> * If the server receives the message directly from the client >>> and the source address in the IP datagram in which the message >>> was received is not a link-local address, then the client is on >>> the link identified by the source address in the IP datagram Er, a link is identified by the src address? I think this is wrong. A link could be identified by a prefix. >>> (note that this situation can occur only if the server has >>> enabled the use of unicast message delivery by the client and >>> the client has sent a message for which unicast delivery is >>> allowed). Er, I think it is forbidden to use unicast addresses in dst of DHCPv6 Solicit. You seem to say this is configurable. But the PGW cant do it. >> Also, some servers could respond with Use Multicast unless >> server-unicast option has been configured. So there is a server-unicast option? Does this option mean that the Solicit could be sent to the unicast address to the server, instead of multicast? This could solve many problems related to multicast. >> It may be that they use the source address to determine this >> (rather than the destination address, which as you say really >> should be used when server receives packet directly)? >> >> >> I'm confused as I think you are saying in: >> >>> I explain why: about 4 distinct clients use LL in src. If I want >>> these clients to use GUA then I must delete the LL from the >>> interface. >> >> That you actually want the global unicast address to be used by the >> client, not the link-local? > > I want to not modify the Clients. The 4 Clients all use LL-in-src. > But the Server examples use GUA-in-src. A Server example is a > packet trace executed on a simulator that pretends to be like in > reality. That simulator uses GUA-in-src. So, I am told, if I want to > be interoperable to that Server, I must do what that simulator does: > put GUA-in-src. So I delete the LL from the interface on the > Client. > > Do you think it is normal to delete the LL from the interface? > > BV> That seems rather bizarre to me ... not sure how other IPv6 > services (ND, DAD, etc.) might be impacted? BV> My recommendation is > to get the server vendor to fix it I agree. > as this is rather broken and others will have problem as well. If > the server vendor wants to sell their server, they will need to > correct it. The server is already sold. I think if they want to sell more of them then they must be compatible with existing clients. It is not by using client and server from same manufacturer that interoperability is guaranteed. >> For what it is worth, the server I work on doesn't care what the >> client's source address is. We monitor the destination address >> (when packet is received). > > "Does not care" - ok. > > But does it accept a Solicit with LL-in-src? > > BV> Yes. That is what 100% of the clients I've ever seen send so our > server would not be servicing millions of IPv6 clients if it dropped > those packets. (And, yes, it is millions based on just one single > customer deployment -- and we have many more customers that are > using IPv6.) I agree, I see the same. Alex [...] From nobody Thu Oct 19 02:09:44 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 77A5613483A for ; Thu, 19 Oct 2017 02:09:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.633 X-Spam-Level: X-Spam-Status: No, score=-2.633 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FREEMAIL_FROM=0.001, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_SOFTFAIL=0.665] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ztCJNv_D5Kx2 for ; Thu, 19 Oct 2017 02:09:42 -0700 (PDT) Received: from oxalide-smtp-out.extra.cea.fr (oxalide-smtp-out.extra.cea.fr [132.168.224.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D1F8813483D for ; Thu, 19 Oct 2017 02:09:33 -0700 (PDT) Received: from pisaure.intra.cea.fr (pisaure.intra.cea.fr [132.166.88.21]) by oxalide-sys.extra.cea.fr (8.14.7/8.14.7/CEAnet-Internet-out-4.0) with ESMTP id v9J99TYA144525; Thu, 19 Oct 2017 11:09:29 +0200 Received: from pisaure.intra.cea.fr (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 8220B206DB4; Thu, 19 Oct 2017 11:09:29 +0200 (CEST) Received: from muguet2.intra.cea.fr (muguet2.intra.cea.fr [132.166.192.7]) by pisaure.intra.cea.fr (Postfix) with ESMTP id 720152066A8; Thu, 19 Oct 2017 11:09:29 +0200 (CEST) Received: from [10.8.34.184] (is227335.intra.cea.fr [10.8.34.184]) by muguet2.intra.cea.fr (8.15.2/8.15.2/CEAnet-Intranet-out-1.4) with ESMTP id v9J99TeX011899; Thu, 19 Oct 2017 11:09:29 +0200 To: =?UTF-8?B?56We5piO6YGU5ZOJ?= Cc: "dhcwg@ietf.org" , "Bernie Volz (volz)" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> From: Alexandre Petrescu Message-ID: <86c2f76a-0a2e-fa61-184c-733bef7821a4@gmail.com> Date: Thu, 19 Oct 2017 11:09:29 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Oct 2017 09:09:43 -0000 Le 18/10/2017 à 22:30, 神明達哉 a écrit : > At Wed, 18 Oct 2017 22:03:26 +0200, > Alexandre Petrescu wrote: > >>>> But I need guidance to the following question: if the Client sends >>>> a Solicit with a LL in src, MUST the Server reply to it? (yes/no >>>> is the needed guidance). >>> >>> I don't see the need for such guidance, at least as part of >>> rfc3315bis. What's your problem if we didn't have such guidance in >>> normative text like a "MUST"? >> >> The problem is the following: exchange between Client and Server does >> not work. CLient believes it needs to send LL in src, whereas Server >> believes the Client should use GUA in src. There are other fields on >> which the problem may reside (port number, IA_ID, and others); each >> needs separate treatment. > > To me, it's just that the server implementation is broken. Unless the > protocol specification explicitly imposes a limitation on the type of > source addresses it shouldn't assume a limitation and refuse to accept > packets that don't meet its proprietary assumption. > > Now, the question is whether a protocol specification needs to > explicitly say that a server MUST NOT have such an assumption. I > simply don't think so - we can't just add nearly obvious statement > just because there is some broken implementation. I wouldn't be > surprised if there is a broken DNS server implementation that doesn't > respond to a query from an IPv6 link-local address, but I just don't > think we should write an RFC that has "a DNS server MUST NOT drop a > query from a link-local IPv6 address" just because of such a broken > implementation. This case is no different from that to me. > > You seem to think it's worth noting in the protocol spec, but as far > as I can see you have not successfully convinced the wg about the need > for it. I can agree with you. Alex > > -- > JINMEI, Tatuya > From nobody Thu Oct 19 05:54:28 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D5465132697 for ; Thu, 19 Oct 2017 05:54:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.521 X-Spam-Level: X-Spam-Status: No, score=-14.521 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dg3HLG9kTh03 for ; Thu, 19 Oct 2017 05:54:25 -0700 (PDT) Received: from alln-iport-8.cisco.com 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Alexandre Petrescu CC: "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSBpFO3Bh3/i+xk+Llo298YhKFKLpuoSAgABdvgD//7IAAIAAajsA//+x0nCAAHb8gP//rpBgACVlRID///xCAA== Date: Thu, 19 Oct 2017 12:54:23 +0000 Message-ID: <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> In-Reply-To: <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/f.22.0.170515 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.98.1.195] Content-Type: text/plain; charset="utf-8" Content-ID: <9D301CA4E0DB06488BDE63760DF2D33F@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Oct 2017 12:54:27 -0000 SSB3YXNu4oCZdCByZXN0cmljdGluZyBteSBkaXNjdXNzaW9uIG9mIHNvdXJjZSBhZGRyZXNzIHRv IGp1c3QgdGhlIFNvbGljaXQgY2FzZS4gSW4gdGhlIFNvbGljaXQgY2FzZSwgdGhlIFNlcnZlci1V 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spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=SHA1; boundary="----=_NextPart_000_01FD_01D349B2.A3F4C490" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 59fac815-ee70-4725-f716-08d5179baf65 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Oct 2017 09:19:37.2076 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR0702MB3704 X-OriginatorOrg: ericsson.com X-Brightmail-Tracker: H4sIAAAAAAAAA02SW0wTQRSGM+3udottslbQkwJRG5VYBRHFqBgCMSYagxd8AXyACpuCYku6 QAAfJAQBiygELBelaMQrlYtaxaBAC6jgragEg0EtF7USRSFB5KJ2mWp8+2b+75wzMxlaKHtD yukETTKr06gSFZQbUR5xZ5PvtRZHpH9r85KN/XnZKARtr67+KdiDoty2xLGJCamsbk1wjFv8 79w+MqmuEqVNnxwgM5G5COmRmAZmPbQMF1J65EbLmHYEd8eyRXwgYx4hGBpX8wHBFAjhSuek y6oQQMVIgxAvPiL49MI+14tiQsBgGKZ4dmeWw1VL8VwrIRMEbc8/z/ECJhpqRmcI7MRATekV 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------=_NextPart_000_01FD_01D349B2.A3F4C490 Content-Type: multipart/alternative; boundary="----=_NextPart_001_01FE_01D349B2.A3F4C490" ------=_NextPart_001_01FE_01D349B2.A3F4C490 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Hi, As part of our work related to IoT devices and enabling IoT devices and services, we realized that DHCP can help in certain more use cases other than what is mentioned in draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options. MQQT is a popular IoT protocol based on publisher-subscriber architecture. There are several IoT devices using MQTT protocol for data reporting. There is need for few DHCP options to enable MQTT devices dynamically. Draft mentioned in below mail provides details on use cases and new options. Request you to review and provide your comments. Thanks & Regards Srinivasa Rao Nalluri -----Original Message----- From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] Sent: Friday, October 20, 2017 2:24 PM To: Srinivasa Rao Nalluri; Srinivasa Rao Nalluri Subject: New Version Notification for draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt A new version of I-D, draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt has been successfully submitted by Srinivas Rao Nalluri and posted to the IETF repository. Name: draft-nalluri-dhc-dhcpv6-mqtt-config-options Revision: 00 Title: DHCPv6 options for MQTT client configuration Document date: 2017-10-20 Group: Individual Submission Pages: 9 URL: https://www.ietf.org/internet-drafts/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt Status: https://datatracker.ietf.org/doc/draft-nalluri-dhc-dhcpv6-mqtt-config-options/ Htmlized: https://tools.ietf.org/html/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00 Htmlized: https://datatracker.ietf.org/doc/html/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00 Abstract: This document defines Dynamic Host Configuration Protocol and Dynamic Host Configuration Protocol version 6 (DHCPv6) Options for MQTT client configuration information, which are used to carry Uniform Resource Locater of MQTT broker and MQTT topic prefix that should be used as prefix for any topic published by MQTT client. Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. The IETF Secretariat ------=_NextPart_001_01FE_01D349B2.A3F4C490 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi,

 

As = part of our work related to IoT devices and enabling IoT devices and = services, we realized that DHCP can help in certain more use cases other = than what is mentioned in = draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options.

MQQT is a popular IoT protocol based on = publisher-subscriber =C2=A0architecture. There are several IoT devices = using MQTT protocol for data reporting.

There is need for few DHCP options to enable MQTT = devices dynamically.

 

Draft = mentioned in below mail provides details on use cases and new options. =

Request you to review and provide = your comments.

 

Thanks = & Regards

Srinivasa Rao = Nalluri

 

-----Original Message-----
From: = internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
Sent: = Friday, October 20, 2017 2:24 PM
To: Srinivasa Rao Nalluri; Srinivasa = Rao Nalluri
Subject: New Version Notification for = draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt

 

 

A new = version of I-D, = draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt

has been successfully submitted by Srinivas Rao = Nalluri and posted to the IETF repository.

 

Name:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = draft-nalluri-dhc-dhcpv6-mqtt-config-options

Revision:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 00

Title:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 DHCPv6 options for MQTT client configuration

Document = date:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 2017-10-20

Group:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Individual = Submission

Pages:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = 9

URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 https://www.ietf.org/inte= rnet-drafts/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00.txt

Status:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 https://datatracker.ietf.= org/doc/draft-nalluri-dhc-dhcpv6-mqtt-config-options/

Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 https://tools.ietf.org/ht= ml/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00<= /p>

Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 = https://datatracker.ietf.= org/doc/html/draft-nalluri-dhc-dhcpv6-mqtt-config-options-00

 

 

Abstract:

=C2=A0=C2=A0 This document defines Dynamic Host = Configuration Protocol and Dynamic

=C2=A0=C2=A0 Host Configuration Protocol version 6 = (DHCPv6) Options for MQTT

=C2=A0=C2=A0 client configuration information, = which are used to carry Uniform

=C2=A0=C2=A0 Resource Locater of MQTT broker and = MQTT topic prefix that should be

=C2=A0=C2=A0 used as prefix for any topic published = by MQTT client.

 

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =

 

 

Please = note that it may take a couple of minutes from the time of submission = until the htmlized version and diff are available at = tools.ietf.org.

 

The = IETF Secretariat

 

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Prefix Delegation - src LL vs GUA Thread-Index: AQHTSLnBoUSoiuDof0qTYY4Ba4GewaLrlquAgAGggeA= Date: Fri, 20 Oct 2017 20:46:32 +0000 Message-ID: <9bad26dc5b2d42ee9cca47adb32eedc0@XCH15-06-08.nw.nos.boeing.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> In-Reply-To: <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: 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[24.60.163.103]) by smtp.gmail.com with ESMTPSA id 6sm28561qtz.68.2017.10.20.13.52.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 20 Oct 2017 13:52:44 -0700 (PDT) From: Ted Lemon Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_DD266243-F2A5-4C8A-8048-E0E3D3F8AA6C" Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Date: Fri, 20 Oct 2017 16:52:43 -0400 In-Reply-To: <9bad26dc5b2d42ee9cca47adb32eedc0@XCH15-06-08.nw.nos.boeing.com> Cc: "Bernie Volz (volz)" , Alexandre Petrescu , "dhcwg@ietf.org" To: "Templin, Fred L" References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> <9bad26dc5b2d42ee9cca47adb32eedc0@XCH15-06-08.nw.nos.boeing.com> X-Mailer: Apple Mail (2.3273) Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Oct 2017 20:52:48 -0000 --Apple-Mail=_DD266243-F2A5-4C8A-8048-E0E3D3F8AA6C Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii On Oct 20, 2017, at 4:46 PM, Templin, Fred L = wrote: > Sorry I am late to this discussion, but AERO uses link-local source = address for > all DHCPv6 PD messaging. It works in the public domain implementations = I > have been working with. It's actually nonsensical to use some other address. One of the = purposes of DHCP is to get addresses, so if the server assumes you = already have one, how's that going to work? --Apple-Mail=_DD266243-F2A5-4C8A-8048-E0E3D3F8AA6C Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii On Oct 20, 2017, at 4:46 PM, Templin, Fred L <Fred.L.Templin@boeing.com> wrote:
Sorry I am late to this discussion, but = AERO uses link-local source address for
all DHCPv6 PD = messaging. It works in the public domain implementations I
have been working = with.

It's = actually nonsensical to use some other address.   One of the = purposes of DHCP is to get addresses, so if the server assumes you = already have one, how's that going to work?

= --Apple-Mail=_DD266243-F2A5-4C8A-8048-E0E3D3F8AA6C-- From nobody Fri Oct 20 14:42:00 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 0735C13443E for ; Fri, 20 Oct 2017 14:41:59 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -4.219 X-Spam-Level: X-Spam-Status: No, score=-4.219 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PpnQD8ftj0nq for ; Fri, 20 Oct 2017 14:41:57 -0700 (PDT) Received: from phx-mbsout-02.mbs.boeing.net (phx-mbsout-02.mbs.boeing.net [130.76.184.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 1C2AD1343C3 for ; Fri, 20 Oct 2017 14:41:57 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by phx-mbsout-02.mbs.boeing.net (8.14.4/8.14.4/DOWNSTREAM_MBSOUT) with SMTP id v9KLfuHV009469; Fri, 20 Oct 2017 14:41:56 -0700 Received: from XCH15-06-08.nw.nos.boeing.com (xch15-06-08.nw.nos.boeing.com [137.136.238.222]) by phx-mbsout-02.mbs.boeing.net (8.14.4/8.14.4/UPSTREAM_MBSOUT) with ESMTP id v9KLfnvp009417 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=OK); Fri, 20 Oct 2017 14:41:50 -0700 Received: from XCH15-06-08.nw.nos.boeing.com (2002:8988:eede::8988:eede) by XCH15-06-08.nw.nos.boeing.com (2002:8988:eede::8988:eede) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Fri, 20 Oct 2017 14:41:49 -0700 Received: from XCH15-06-08.nw.nos.boeing.com ([137.136.238.222]) by XCH15-06-08.nw.nos.boeing.com ([137.136.238.222]) with mapi id 15.00.1320.000; Fri, 20 Oct 2017 14:41:49 -0700 From: "Templin, Fred L" To: Ted Lemon CC: "Bernie Volz (volz)" , Alexandre Petrescu , "dhcwg@ietf.org" Thread-Topic: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA Thread-Index: AQHTSLnBoUSoiuDof0qTYY4Ba4GewaLrlquAgAGggeCAAHd5gP//mBsw Date: Fri, 20 Oct 2017 21:41:49 +0000 Message-ID: <158f4795f6894974bc02beb1be1832a2@XCH15-06-08.nw.nos.boeing.com> References: <149869621720.6575.278128190348174876@ietfa.amsl.com> <08e4e953-3a68-d6cb-6066-f60514ef0ac5@gmail.com> <3285281858d043649d507b6bda7b8646@XCH-ALN-003.cisco.com> <1f94b780-59c1-42ce-936d-0c8a71143444@gmail.com> <37917a26062f4e4c9715d324604e4d01@XCH-ALN-003.cisco.com> <35558A79-C176-4D71-9E91-4BDB19DDD006@cisco.com> <67ba54d2-d53f-82bf-93c9-1b92631ef4e8@gmail.com> <86409a9acb7846ddbdff42c58328e7d6@XCH-ALN-003.cisco.com> <2fbc8325961c49a1944e3ee216fcb032@XCH-ALN-003.cisco.com> <4c25045f863a4e368f58a5a4a3917bde@XCH-ALN-003.cisco.com> <37918108-c5ed-a82d-2d97-227388ec25d0@gmail.com> <1A785964-1088-4081-B7DC-58E3CD9B0605@cisco.com> <9bad26dc5b2d42ee9cca47adb32eedc0@XCH15-06-08.nw.nos.boeing.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [137.136.248.6] Content-Type: multipart/alternative; boundary="_000_158f4795f6894974bc02beb1be1832a2XCH150608nwnosboeingcom_" MIME-Version: 1.0 X-TM-AS-MML: disable Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questions about Solicit Prefix Delegation - src LL vs GUA X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Oct 2017 21:41:59 -0000 --_000_158f4795f6894974bc02beb1be1832a2XCH150608nwnosboeingcom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Shoulda just kept my mouth shut - but, thanks for the clarification! Fred From: Ted Lemon [mailto:mellon@fugue.com] Sent: Friday, October 20, 2017 1:53 PM To: Templin, Fred L Cc: Bernie Volz (volz) ; Alexandre Petrescu ; dhcwg@ietf.org Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - questio= ns about Solicit Prefix Delegation - src LL vs GUA On Oct 20, 2017, at 4:46 PM, Templin, Fred L > wrote: Sorry I am late to this discussion, but AERO uses link-local source address= for all DHCPv6 PD messaging. It works in the public domain implementations I have been working with. It's actually nonsensical to use some other address. One of the purposes = of DHCP is to get addresses, so if the server assumes you already have one,= how's that going to work? --_000_158f4795f6894974bc02beb1be1832a2XCH150608nwnosboeingcom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Shoulda just kept my mouth shut - but= , thanks for the clarification!

 

Fred

 

From: Ted Lemon [mailto:mellon@fugue= .com]
Sent: Friday, October 20, 2017 1:53 PM
To: Templin, Fred L <Fred.L.Templin@boeing.com>
Cc: Bernie Volz (volz) <volz@cisco.com>; Alexandre Petrescu &l= t;alexandre.petrescu@gmail.com>; dhcwg@ietf.org
Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-rfc3315bis-09.txt - = questions about Solicit Prefix Delegation - src LL vs GUA=

 

On Oct 20, 2017, at 4:46 PM, Templin, Fred L <Fred.L.Templin@boeing.com>= wrote:

Sorry I am late to this discussion, but AERO uses = link-local source address for
all DHCPv6 PD messaging. It works in the public domain implementations I have been working with.

 

It's actually nonsensical to use some other address.=   One of the purposes of DHCP is to get addresses, so if the server a= ssumes you already have one, how's that going to work?

 

--_000_158f4795f6894974bc02beb1be1832a2XCH150608nwnosboeingcom_-- From nobody Fri Oct 20 17:32:58 2017 Return-Path: X-Original-To: dhcwg@ietf.org Delivered-To: dhcwg@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 5E1AD1345C9; Fri, 20 Oct 2017 17:24:34 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Cc: dhcwg@ietf.org, suresh@kaloom.com X-Test-IDTracker: no X-IETF-IDTracker: 6.63.2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <150854547437.20809.2554763401856145361.idtracker@ietfa.amsl.com> Date: Fri, 20 Oct 2017 17:24:34 -0700 Archived-At: Subject: [dhcwg] dhc - Requested session has been scheduled for IETF 100 X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Oct 2017 00:24:34 -0000 Dear Bernie Volz, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. dhc Session 1 (1:00:00) Thursday, Afternoon Session III 1810-1910 Room Name: Collyer size: 250 --------------------------------------------- Request Information: --------------------------------------------------------- Working Group Name: Dynamic Host Configuration Area Name: Internet Area Session Requester: Bernie Volz Number of Sessions: 1 Length of Session(s): 1 Hour Number of Attendees: 40 Conflicts to Avoid: First Priority: v6ops 6man softwire homenet Second Priority: sunset4 dnssd dnsop intarea People who must be present: Suresh Krishnan Bernie Volz Tomek Mrugalski Resources Requested: Special Requests: --------------------------------------------------------- From nobody Mon Oct 23 11:32:20 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C419213A039 for ; Mon, 23 Oct 2017 11:32:18 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.52 X-Spam-Level: X-Spam-Status: No, score=-14.52 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dUZ3dfVxw362 for ; Mon, 23 Oct 2017 11:32:07 -0700 (PDT) Received: from rcdn-iport-6.cisco.com (rcdn-iport-6.cisco.com [173.37.86.77]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9855B139F5C for ; Mon, 23 Oct 2017 11:32:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=19159; q=dns/txt; s=iport; t=1508783527; x=1509993127; h=from:to:subject:date:message-id:mime-version; bh=8l8wzwL071/GuQyKJRVOzsuG90BhAvUrhTV8VL/MW2A=; b=bGLSEYYbozYCuiabB/5GjYGXvP71WJQawQ4vplHKpNaZJUSVS82VL19T b36SCdNjvxJU8yczuHBLHKqRDIf2BxQB/0EfXvxSTsTpAbOHkOShCN2W2 Djf8rzgNyFFoZY2lJBIJXuvksS6gxeoNWJxuYVRnTHb+KfxOGRQnPra0G g=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0CnAABcNO5Z/51dJa1bGQEBAQEBAQEBA?= =?us-ascii?q?QEBBwEBAQEBgm9wZG4nB44Sj0KBepY5EIIBCiOFGAKEVD8YAQIBAQEBAQEBax0?= =?us-ascii?q?LhR0BAQUtXgEIEQMBAQEoORQJCQEEEwiJNGQQqXWLJAEBAQEBAQEBAQEBAQEBA?= =?us-ascii?q?QEBAQEBARgFgy6CB4M5gyqBPIMWARIBPxaFPwWhZgKHYo0Hgh6FeosSiiWLKgI?= =?us-ascii?q?RGQGBOAEfOIEDWHoVH4J+AQEOH4RAdol6gSSBEQEBAQ?= X-IronPort-AV: E=Sophos;i="5.43,424,1503360000"; d="scan'208,217";a="311323269" Received: from rcdn-core-6.cisco.com ([173.37.93.157]) by rcdn-iport-6.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2017 18:32:05 +0000 Received: from XCH-RCD-001.cisco.com (xch-rcd-001.cisco.com [173.37.102.11]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id v9NIW5iA024452 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL) for ; Mon, 23 Oct 2017 18:32:05 GMT Received: from xch-aln-003.cisco.com (173.36.7.13) by XCH-RCD-001.cisco.com (173.37.102.11) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Mon, 23 Oct 2017 13:32:04 -0500 Received: from xch-aln-003.cisco.com ([173.36.7.13]) by XCH-ALN-003.cisco.com ([173.36.7.13]) with mapi id 15.00.1320.000; Mon, 23 Oct 2017 13:32:04 -0500 From: "Bernie Volz (volz)" To: "dhcwg@ietf.org" Thread-Topic: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests Thread-Index: AdNMLTKDrj4yt5RQSfeFQHYG85eDjw== Date: Mon, 23 Oct 2017 18:32:04 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.98.1.195] Content-Type: multipart/alternative; boundary="_000_af3da5a9dfe24857a169a91a2045af0cXCHALN003ciscocom_" MIME-Version: 1.0 Archived-At: Subject: Re: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Oct 2017 18:32:19 -0000 --_000_af3da5a9dfe24857a169a91a2045af0cXCHALN003ciscocom_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi: Just another reminder for IETF-100 agenda items. Draft agenda is at https:/= /datatracker.ietf.org/meeting/100/materials/agenda-100-dhc/. Based on requests at time we had to submit time request, we requested a 1 h= our slot: Date: Thursday, November 16, 2017, 18:10-19:10 (UT + 8), Afternoon session = III Location: Collyer - Bernie From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bernie Volz (volz) Sent: Friday, September 15, 2017 4:21 PM To: dhcwg@ietf.org Subject: Re: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - due Sep= tember 26, 2017 Hi: Just another reminder for agenda items. There's not a lot on the agenda and so we will likely only request 60 minut= e session. One topic will be future of the WG / re-chartering (more at http= s://github.com/dhcwg/wg/wiki/IETF-100-(Singapore)-DHC-WG-Agenda). We have had a couple of WG documents expire and not republished (so far) - = draft-ietf-dhc-dhcp4o6-saddr-opt (there was an update pending from Ian) and= draft-ietf-dhc-dhcpv4-forcerenew-extensions (this was awaiting further com= ments from one or more of the authors before proceeding). And, then there w= as draft-ietf-dhc-sedhcpv6 which I think the WG has for now abandoned (at l= east for now). And the plan for draft-ietf-dhc-dhcpv6-agentopt-delegate-05 = is to let it expire (unless seDHCPv6 rekindles). So our current WG document queue is rather small with 3 documents: draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options-00 -- On agenda. draft-ietf-dhc-relay-port-06 -- Submitted to IESG for Publication: Propose= d Standard. draft-ietf-dhc-rfc3315bis-10 -- Hopefully soon to be submitted to IESG. Once 3315bis is done, we'll want to eventually advance to full standard (th= at will require some time to elapse). - Bernie From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bernie Volz (volz) Sent: Thursday, August 31, 2017 10:45 AM To: dhcwg@ietf.org Subject: Re: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - due Sep= tember 26, 2017 Hi: Just a friendly reminder to send agenda requests. You can visit https://github.com/dhcwg/wg/wiki/IETF-100-(Singapore)-DHC-WG-= Agenda to see what is presently on the agenda. - Bernie From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bernie Volz (volz) Sent: Monday, August 14, 2017 3:40 PM To: dhcwg@ietf.org Subject: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - due Septemb= er 26, 2017 Hi: If you have any interest in presenting to the DHC wg during IETF-100, pleas= e submit a request by Tuesday, September 26th. Tomek & I must submit a requ= est for a session by the September 29th deadline (see https://ietf.org/meet= ing/important-dates.html#ietf100). As in the past, please provide (to at least the chairs - email dhc-chairs@i= etf.org): Title Of Session: Presenter: Related Drafts: Time Required: Purpose of Session: We do want to remind those requesting time that you should focus on discuss= ing key issues that need resolution to move a draft forward or to introduce= potential new work. While we are still about 3 months from the meeting, the session requests ha= ve opened up and we need to know approximately how much time to request. - Bernie & Tomek --_000_af3da5a9dfe24857a169a91a2045af0cXCHALN003ciscocom_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi:<= /p>

 

Just another reminder = for IETF-100 agenda items. Draft agenda is at https://datatracker.ietf.org/meeting/100/materials/agenda-100-dhc/.=

 

Based on requests at t= ime we had to submit time request, we requested a 1 hour slot:

 

Date: Thursday, Novemb= er 16, 2017, 18:10-19:10 (UT + 8), Afternoon session III

Location: Collyer=

 

-&nb= sp;         Bernie

 

From: dhcwg [mailto:dhcwg-bounces@ietf.org] <= b>On Behalf Of Bernie Volz (volz)
Sent: Friday, September 15, 2017 4:21 PM
To: dhcwg@ietf.org
Subject: Re: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - = due September 26, 2017

 

Hi:<= /p>

 

Just another reminder = for agenda items.

 

There’s not a lo= t on the agenda and so we will likely only request 60 minute session. One t= opic will be future of the WG / re-chartering (more at https://github.com/dhcwg/wg/wiki/IETF-100-(Singapore)-DHC-WG-Agenda)<= /a>.

 

We have had a couple o= f WG documents expire and not republished (so far) - draft-ietf-dhc-dhcp4o6= -saddr-opt (there was an update pending from Ian) and draft-ietf-dhc-dhcpv4= -forcerenew-extensions (this was awaiting further comments from one or more of the authors before proceeding). And, = then there was draft-ietf-dhc-sedhcpv6 which I think the WG has for now aba= ndoned (at least for now). And the plan for draft-ietf-dhc-dhcpv6-agentopt-= delegate-05 is to let it expire (unless seDHCPv6 rekindles).

 

So our current WG docu= ment queue is rather small with 3 documents:

 

draft-ietf-dhc-dhcpv6-= lwm2m-bootstrap-options-00 -- On agenda.

draft-ietf-dhc-relay-p= ort-06  -- Submitted to IESG for Publication: Proposed Standard.<= /o:p>

draft-ietf-dhc-rfc3315= bis-10 -- Hopefully soon to be submitted to IESG.

 

Once 3315bis is done, = we’ll want to eventually advance to full standard (that will require = some time to elapse).

 

-&nb= sp;         Bernie

 

From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bernie Volz (volz)
Sent: Thursday, August 31, 2017 10:45 AM
To: dhcwg@ietf.org
Subject: Re: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - = due September 26, 2017

 

Hi:<= /p>

 

Just a friendly remind= er to send agenda requests.

 

You can visit https://github.com/dhcwg/wg/wiki/IETF-100-(Singapore)-DHC-WG-Agenda to = see what is presently on the agenda.

 

-&nb= sp;         Bernie

 

From: dhcwg [mailto:dhcwg-bounces@ietf.org] On Behalf Of Bernie Volz (volz)
Sent: Monday, August 14, 2017 3:40 PM
To: dhcwg@ietf.org
Subject: [dhcwg] IETF-100 (Singapore) Meeting Agenda Requests - due = September 26, 2017

 

Hi:

 

If you have any interest in presenting to the DHC wg= during IETF-100, please submit a request by Tuesday, September 26th. Tomek= & I must submit a request for a session by the September 29th deadline= (see https://i= etf.org/meeting/important-dates.html#ietf100).

 

As in the past, please provide (to at least the chai= rs – email dhc-chairs@ietf.org):=

 

Title Of Session:

Presenter:

Related Drafts:

Time Required:

Purpose of Session:

 

We do want to remind those requesting time that you = should focus on discussing key issues that need resolution to move a draft = forward or to introduce potential new work.

 

While we are still about 3 months from the meeting, = the session requests have opened up and we need to know approximately how m= uch time to request.

 

- Bernie & Tomek

--_000_af3da5a9dfe24857a169a91a2045af0cXCHALN003ciscocom_-- From nobody Fri Oct 27 11:38:33 2017 Return-Path: X-Original-To: dhcwg@ietf.org Delivered-To: dhcwg@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 2F26613943F; Fri, 27 Oct 2017 11:38:27 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: dhcwg@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.63.2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <150912950716.22100.637687173228994680@ietfa.amsl.com> Date: Fri, 27 Oct 2017 11:38:27 -0700 Archived-At: Subject: [dhcwg] I-D Action: draft-ietf-dhc-relay-port-07.txt X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Oct 2017 18:38:27 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Dynamic Host Configuration WG of the IETF. Title : Generalized UDP Source Port for DHCP Relay Authors : Naiming Shen Enke Chen Filename : draft-ietf-dhc-relay-port-07.txt Pages : 10 Date : 2017-10-27 Abstract: This document proposes an extension to the DHCP protocols that allows a relay agent to use any available source port for upstream communications, and to include a DHCP option that can be used to statelessly route responses back to the appropriate source port on downstream communications. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-dhc-relay-port/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-dhc-relay-port-07 https://datatracker.ietf.org/doc/html/draft-ietf-dhc-relay-port-07 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-dhc-relay-port-07 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Oct 27 11:42:54 2017 Return-Path: X-Original-To: dhcwg@ietfa.amsl.com Delivered-To: dhcwg@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 50EF213F5BE for ; Fri, 27 Oct 2017 11:42:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.521 X-Spam-Level: X-Spam-Status: No, score=-14.521 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Bbtfm0OA5WBi for ; Fri, 27 Oct 2017 11:42:52 -0700 (PDT) Received: from alln-iport-4.cisco.com (alln-iport-4.cisco.com [173.37.142.91]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0DD0A13F43F for ; 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27 Oct 2017 18:42:51 +0000 Received: from XCH-ALN-002.cisco.com (xch-aln-002.cisco.com [173.36.7.12]) by rcdn-core-6.cisco.com (8.14.5/8.14.5) with ESMTP id v9RIgpvZ029936 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL) for ; Fri, 27 Oct 2017 18:42:51 GMT Received: from xch-rcd-004.cisco.com (173.37.102.14) by XCH-ALN-002.cisco.com (173.36.7.12) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Fri, 27 Oct 2017 13:42:50 -0500 Received: from xch-rcd-004.cisco.com ([173.37.102.14]) by XCH-RCD-004.cisco.com ([173.37.102.14]) with mapi id 15.00.1320.000; Fri, 27 Oct 2017 13:42:50 -0500 From: "Naiming Shen (naiming)" To: dhcwg Thread-Topic: I-D Action: draft-ietf-dhc-relay-port-07.txt Thread-Index: AQHTT1LTYp08jSEW4kirPzyvNCfTh6L4W/CA Date: Fri, 27 Oct 2017 18:42:50 +0000 Message-ID: <99854103-882D-48AC-ACB9-A18055D499F8@cisco.com> References: <150912950716.22100.637687173228994680@ietfa.amsl.com> In-Reply-To: <150912950716.22100.637687173228994680@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.24.92.136] Content-Type: text/plain; charset="utf-8" Content-ID: <0B6783B39E99864F9DDCC7C76833147E@emea.cisco.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 Archived-At: Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-relay-port-07.txt X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Oct 2017 18:42:53 -0000 DQpIaSBESEMgd29ya2luZy1ncm91cCwNCg0KdGhlIG5ldyB2ZXJzaW9uIG9mIHJlbGF5LXBvcnQg ZHJhZnQgaXMgcG9zdGVkIGluIHJlc3BvbnNlIHRvDQpkaXJlY3RvcmF0ZeKAmXMgcmV2aWV3cy4g cGxlYXNlIHJldmlldyBhbmQgY29tbWVudC4NCg0KdGhhbmtzLg0KLSBOYWltaW5nDQoNCj4gT24g T2N0IDI3LCAyMDE3LCBhdCAxMTozOCBBTSwgaW50ZXJuZXQtZHJhZnRzQGlldGYub3JnIHdyb3Rl Og0KPiANCj4gDQo+IEEgTmV3IEludGVybmV0LURyYWZ0IGlzIGF2YWlsYWJsZSBmcm9tIHRoZSBv bi1saW5lIEludGVybmV0LURyYWZ0cyBkaXJlY3Rvcmllcy4NCj4gVGhpcyBkcmFmdCBpcyBhIHdv cmsgaXRlbSBvZiB0aGUgRHluYW1pYyBIb3N0IENvbmZpZ3VyYXRpb24gV0cgb2YgdGhlIElFVEYu DQo+IA0KPiAgICAgICAgVGl0bGUgICAgICAgICAgIDogR2VuZXJhbGl6ZWQgVURQIFNvdXJjZSBQ b3J0IGZvciBESENQIFJlbGF5DQo+ICAgICAgICBBdXRob3JzICAgICAgICAgOiBOYWltaW5nIFNo ZW4NCj4gICAgICAgICAgICAgICAgICAgICAgICAgIEVua2UgQ2hlbg0KPiAJRmlsZW5hbWUgICAg ICAgIDogZHJhZnQtaWV0Zi1kaGMtcmVsYXktcG9ydC0wNy50eHQNCj4gCVBhZ2VzICAgICAgICAg ICA6IDEwDQo+IAlEYXRlICAgICAgICAgICAgOiAyMDE3LTEwLTI3DQo+IA0KPiBBYnN0cmFjdDoN Cj4gICBUaGlzIGRvY3VtZW50IHByb3Bvc2VzIGFuIGV4dGVuc2lvbiB0byB0aGUgREhDUCBwcm90 b2NvbHMgdGhhdCBhbGxvd3MNCj4gICBhIHJlbGF5IGFnZW50IHRvIHVzZSBhbnkgYXZhaWxhYmxl IHNvdXJjZSBwb3J0IGZvciB1cHN0cmVhbQ0KPiAgIGNvbW11bmljYXRpb25zLCBhbmQgdG8gaW5j bHVkZSBhIERIQ1Agb3B0aW9uIHRoYXQgY2FuIGJlIHVzZWQgdG8NCj4gICBzdGF0ZWxlc3NseSBy b3V0ZSByZXNwb25zZXMgYmFjayB0byB0aGUgYXBwcm9wcmlhdGUgc291cmNlIHBvcnQgb24NCj4g ICBkb3duc3RyZWFtIGNvbW11bmljYXRpb25zLg0KPiANCj4gDQo+IFRoZSBJRVRGIGRhdGF0cmFj a2VyIHN0YXR1cyBwYWdlIGZvciB0aGlzIGRyYWZ0IGlzOg0KPiBodHRwczovL2RhdGF0cmFja2Vy LmlldGYub3JnL2RvYy9kcmFmdC1pZXRmLWRoYy1yZWxheS1wb3J0Lw0KPiANCj4gVGhlcmUgYXJl IGFsc28gaHRtbGl6ZWQgdmVyc2lvbnMgYXZhaWxhYmxlIGF0Og0KPiBodHRwczovL3Rvb2xzLmll dGYub3JnL2h0bWwvZHJhZnQtaWV0Zi1kaGMtcmVsYXktcG9ydC0wNw0KPiBodHRwczovL2RhdGF0 cmFja2VyLmlldGYub3JnL2RvYy9odG1sL2RyYWZ0LWlldGYtZGhjLXJlbGF5LXBvcnQtMDcNCj4g DQo+IEEgZGlmZiBmcm9tIHRoZSBwcmV2aW91cyB2ZXJzaW9uIGlzIGF2YWlsYWJsZSBhdDoNCj4g aHR0cHM6Ly93d3cuaWV0Zi5vcmcvcmZjZGlmZj91cmwyPWRyYWZ0LWlldGYtZGhjLXJlbGF5LXBv cnQtMDcNCj4gDQo+IA0KPiBQbGVhc2Ugbm90ZSB0aGF0IGl0IG1heSB0YWtlIGEgY291cGxlIG9m IG1pbnV0ZXMgZnJvbSB0aGUgdGltZSBvZiBzdWJtaXNzaW9uDQo+IHVudGlsIHRoZSBodG1saXpl ZCB2ZXJzaW9uIGFuZCBkaWZmIGFyZSBhdmFpbGFibGUgYXQgdG9vbHMuaWV0Zi5vcmcuDQo+IA0K PiBJbnRlcm5ldC1EcmFmdHMgYXJlIGFsc28gYXZhaWxhYmxlIGJ5IGFub255bW91cyBGVFAgYXQ6 DQo+IGZ0cDovL2Z0cC5pZXRmLm9yZy9pbnRlcm5ldC1kcmFmdHMvDQo+IA0KPiBfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXw0KPiBJLUQtQW5ub3VuY2UgbWFp bGluZyBsaXN0DQo+IEktRC1Bbm5vdW5jZUBpZXRmLm9yZw0KPiBodHRwczovL3d3dy5pZXRmLm9y Zy9tYWlsbWFuL2xpc3RpbmZvL2ktZC1hbm5vdW5jZQ0KPiBJbnRlcm5ldC1EcmFmdCBkaXJlY3Rv cmllczogaHR0cDovL3d3dy5pZXRmLm9yZy9zaGFkb3cuaHRtbA0KPiBvciBmdHA6Ly9mdHAuaWV0 Zi5vcmcvaWV0Zi8xc2hhZG93LXNpdGVzLnR4dA0KDQo= From nobody Sat Oct 28 19:52:19 2017 Return-Path: X-Original-To: dhcwg@ietf.org Delivered-To: dhcwg@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id D2FA713F449; Sat, 28 Oct 2017 19:52:16 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: dhcwg@ietf.org X-Test-IDTracker: no X-IETF-IDTracker: 6.63.2 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <150924553680.11212.11974483163686008495@ietfa.amsl.com> Date: Sat, 28 Oct 2017 19:52:16 -0700 Archived-At: Subject: [dhcwg] I-D Action: draft-ietf-dhc-dhcpv6-yang-04.txt X-BeenThere: dhcwg@ietf.org X-Mailman-Version: 2.1.22 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 29 Oct 2017 02:52:17 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Dynamic Host Configuration WG of the IETF. Title : YANG Data Model for DHCPv6 Configuration Authors : Yong Cui Hao Wang Linhui Sun Ian Farrer Sladjana Zechlin Filename : draft-ietf-dhc-dhcpv6-yang-04.txt Pages : 95 Date : 2017-10-28 Abstract: This document describes a YANG data model [RFC6020] for the configuration and management of DHCPv6 servers, relays, and clients. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-dhc-dhcpv6-yang/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-dhc-dhcpv6-yang-04 https://datatracker.ietf.org/doc/html/draft-ietf-dhc-dhcpv6-yang-04 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-dhc-dhcpv6-yang-04 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/