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From: Juan Carlos Zuniga <juancarlos.zuniga@sigfox.com>
To: "Black, David" <David.Black@dell.com>, Joe Touch <touch@isi.edu>, "int-area@ietf.org" <int-area@ietf.org>
Thread-Topic: [Int-area] I-D Action: draft-ietf-intarea-tunnels-06.txt
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Archived-At: <https://mailarchive.ietf.org/arch/msg/int-area/32_Rhuwb7BObiM4a5QCsPEQBNuk>
Subject: Re: [Int-area] I-D Action: draft-ietf-intarea-tunnels-06.txt
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From: Erik Kline <ek@google.com>
Date: Tue, 6 Jun 2017 00:45:47 +0900
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To: Khaled Omar <eng.khaled.omar@hotmail.com>
Cc: int-area <int-area@ietf.org>, intarea-ads <intarea-ads@ietf.org>,  intarea-chairs <intarea-chairs@ietf.org>, chair <chair@ietf.org>
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Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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You probably want to read the RFCs and NOTE WELL about contributions to the
IETF.

On 6 June 2017 at 00:10, Khaled Omar <eng.khaled.omar@hotmail.com> wrote:

>
>
> -------- Original Message --------
> Subject: IPv10, KRP (RRP) IDs.
> From: Khaled Omar
> To: ietf
> CC:
>
>
> Hi everyone,
>
> I still didn't get any response from any ietf member regarding the IDs
> listed on the subject line of this e-mail.
>
> Recently, they are still uploaded and not removed, regarding their
> discussions, no technical discussion started since the technical problem
> occured during the IPv10 remote presentation, even with the recent
> statistics shows a clear division happening on the internel.
>
> I cannot do more thank asking for removal if no clear interest is shown
> for taking these drafts further, but I still see no response, which is
> ridiculous, as I shouldn't repeat my request for a 2nd time.
>
> Regardss,
>
> Khaled Omar
>
>
> _______________________________________________
> Int-area mailing list
> Int-area@ietf.org
> https://www.ietf.org/mailman/listinfo/int-area
>
>

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<div dir=3D"ltr">You probably want to read the RFCs and NOTE WELL about con=
tributions to the IETF.</div><div class=3D"gmail_extra"><br><div class=3D"g=
mail_quote">On 6 June 2017 at 00:10, Khaled Omar <span dir=3D"ltr">&lt;<a h=
ref=3D"mailto:eng.khaled.omar@hotmail.com" target=3D"_blank">eng.khaled.oma=
r@hotmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">



<div>
<div class=3D"m_75934895866303512quote" style=3D"line-height:1.5"><br>
<br>
-------- Original Message --------<br>
Subject: IPv10, KRP (RRP) IDs.<br>
From: Khaled Omar <u></u><br>
To: ietf <u></u><br>
CC: <br>
<br>
<br type=3D"attribution">
<blockquote class=3D"m_75934895866303512quote" style=3D"margin:0 0 0 .8ex;b=
order-left:1px #ccc solid;padding-left:1ex">
Hi everyone,<br>
<br>
I still didn&#39;t get any response from any ietf member regarding the IDs =
listed on the subject line of this e-mail.<br>
<br>
Recently, they are still uploaded and not removed, regarding their discussi=
ons, no technical discussion started since the technical problem occured du=
ring the IPv10 remote presentation, even with the recent statistics shows a=
 clear division happening on the
 internel.<br>
<br>
I cannot do more thank asking for removal if no clear interest is shown for=
 taking these drafts further, but I still see no response, which is ridicul=
ous, as I shouldn&#39;t repeat my request for a 2nd time.<br>
<br>
Regardss,<br>
<br>
Khaled Omar</blockquote>
<u></u><u></u></div>
</div>

<br>______________________________<wbr>_________________<br>
Int-area mailing list<br>
<a href=3D"mailto:Int-area@ietf.org">Int-area@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/int-area" rel=3D"noreferre=
r" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/int-area</a=
><br>
<br></blockquote></div><br></div>

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From: Warren Kumari <warren@kumari.net>
Date: Mon, 05 Jun 2017 16:42:23 +0000
Message-ID: <CAHw9_iJF359hE2W6=9znNPqKjvBJq5ZthaO5mcepuMvBfxN-6w@mail.gmail.com>
To: Erik Kline <ek@google.com>, Khaled Omar <eng.khaled.omar@hotmail.com>
Cc: chair <chair@ietf.org>, int-area <int-area@ietf.org>,  intarea-ads <intarea-ads@ietf.org>, intarea-chairs <intarea-chairs@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/int-area/YANYNOYSkikwJjQr3kDDCu4A8bw>
Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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--001a113ac2d4a20c91055139303e
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... and the email which was sent to you.

https://mailarchive.ietf.org/arch/msg/ietf/tllVkC8PXR9pv1OsuM53Pg4bLnA

W


On Mon, Jun 5, 2017 at 11:46 AM Erik Kline <ek@google.com> wrote:

> You probably want to read the RFCs and NOTE WELL about contributions to
> the IETF.
>
> On 6 June 2017 at 00:10, Khaled Omar <eng.khaled.omar@hotmail.com> wrote:
>
>>
>>
>> -------- Original Message --------
>> Subject: IPv10, KRP (RRP) IDs.
>> From: Khaled Omar
>> To: ietf
>> CC:
>>
>>
>> Hi everyone,
>>
>> I still didn't get any response from any ietf member regarding the IDs
>> listed on the subject line of this e-mail.
>>
>> Recently, they are still uploaded and not removed, regarding their
>> discussions, no technical discussion started since the technical problem
>> occured during the IPv10 remote presentation, even with the recent
>> statistics shows a clear division happening on the internel.
>>
>> I cannot do more thank asking for removal if no clear interest is shown
>> for taking these drafts further, but I still see no response, which is
>> ridiculous, as I shouldn't repeat my request for a 2nd time.
>>
>> Regardss,
>>
>> Khaled Omar
>>
>>
>> _______________________________________________
>> Int-area mailing list
>> Int-area@ietf.org
>> https://www.ietf.org/mailman/listinfo/int-area
>>
>>
> _______________________________________________
> Int-area mailing list
> Int-area@ietf.org
> https://www.ietf.org/mailman/listinfo/int-area
>

--001a113ac2d4a20c91055139303e
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<div><div dir=3D"auto">... and the email which was sent to you.</div><div d=
ir=3D"auto"><br></div><div dir=3D"auto"><a href=3D"https://mailarchive.ietf=
.org/arch/msg/ietf/tllVkC8PXR9pv1OsuM53Pg4bLnA">https://mailarchive.ietf.or=
g/arch/msg/ietf/tllVkC8PXR9pv1OsuM53Pg4bLnA</a><br></div><div dir=3D"auto">=
<br></div><div dir=3D"auto">W</div><div dir=3D"auto"><br></div><br><div cla=
ss=3D"gmail_quote"><div>On Mon, Jun 5, 2017 at 11:46 AM Erik Kline &lt;<a h=
ref=3D"mailto:ek@google.com">ek@google.com</a>&gt; wrote:<br></div><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc s=
olid;padding-left:1ex"><div>You probably want to read the RFCs and NOTE WEL=
L about contributions to the IETF.</div><div class=3D"gmail_extra"><br><div=
 class=3D"gmail_quote">On 6 June 2017 at 00:10, Khaled Omar <span>&lt;<a hr=
ef=3D"mailto:eng.khaled.omar@hotmail.com" target=3D"_blank">eng.khaled.omar=
@hotmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">



<div>
<div class=3D"m_5672032255487581297m_75934895866303512quote" style=3D"line-=
height:1.5"><br>
<br>
-------- Original Message --------<br>
Subject: IPv10, KRP (RRP) IDs.<br>
From: Khaled Omar <u></u><br>
To: ietf <u></u><br>
CC: <br>
<br>
<br type=3D"attribution">
<blockquote class=3D"m_5672032255487581297m_75934895866303512quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi everyone,<br>
<br>
I still didn&#39;t get any response from any ietf member regarding the IDs =
listed on the subject line of this e-mail.<br>
<br>
Recently, they are still uploaded and not removed, regarding their discussi=
ons, no technical discussion started since the technical problem occured du=
ring the IPv10 remote presentation, even with the recent statistics shows a=
 clear division happening on the
 internel.<br>
<br>
I cannot do more thank asking for removal if no clear interest is shown for=
 taking these drafts further, but I still see no response, which is ridicul=
ous, as I shouldn&#39;t repeat my request for a 2nd time.<br>
<br>
Regardss,<br>
<br>
Khaled Omar</blockquote>
<u></u><u></u></div>
</div>

<br>_______________________________________________<br>
Int-area mailing list<br>
<a href=3D"mailto:Int-area@ietf.org" target=3D"_blank">Int-area@ietf.org</a=
><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/int-area" rel=3D"noreferre=
r" target=3D"_blank">https://www.ietf.org/mailman/listinfo/int-area</a><br>
<br></blockquote></div><br></div>
_______________________________________________<br>
Int-area mailing list<br>
<a href=3D"mailto:Int-area@ietf.org" target=3D"_blank">Int-area@ietf.org</a=
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<a href=3D"https://www.ietf.org/mailman/listinfo/int-area" rel=3D"noreferre=
r" target=3D"_blank">https://www.ietf.org/mailman/listinfo/int-area</a><br>
</blockquote></div></div>

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To: Warren Kumari <warren@kumari.net>, Erik Kline <ek@google.com>
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Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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From nobody Mon Jun  5 11:30:23 2017
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Date: Mon, 5 Jun 2017 20:30:13 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Khaled Omar <eng.khaled.omar@hotmail.com>
cc: int-area <int-area@ietf.org>, intarea-ads <intarea-ads@ietf.org>,  intarea-chairs <intarea-chairs@ietf.org>
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Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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On Mon, 5 Jun 2017, Khaled Omar wrote:

> No one can force an internet draft to not be removed if the only author 
> asked for that, saying keeping them forever means you have conflicts 
> inside urself, and don't know what to do, so I'm telling u now what to 
> do, REMOVE these IDs and no more representation by this ietf.

So you took my private email I sent directly to you, and sent it to the 
IETF without my permission, and you're now claiming rights to have things 
removed? What about my rights to not have my text sent to the IETF without 
my permission?

You're a very confused person.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se


From nobody Mon Jun  5 11:40:53 2017
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From: Khaled Omar <eng.khaled.omar@hotmail.com>
To: Mikael Abrahamsson <swmike@swm.pp.se>
CC: int-area <int-area@ietf.org>, intarea-ads <intarea-ads@ietf.org>, intarea-chairs <intarea-chairs@ietf.org>, "iesg@ietf.org" <iesg@ietf.org>
Thread-Topic: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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Archived-At: <https://mailarchive.ietf.org/arch/msg/int-area/rZlCq9LFvbw57xrXPShrZZPBVpM>
Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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Don't reply using your own rules with the tongue of the ietf again.

-----Original Message-----
From: Mikael Abrahamsson [mailto:swmike@swm.pp.se]=20
Sent: Monday, June 5, 2017 8:30 PM
To: Khaled Omar
Cc: int-area; intarea-ads; intarea-chairs
Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.

On Mon, 5 Jun 2017, Khaled Omar wrote:

> No one can force an internet draft to not be removed if the only=20
> author asked for that, saying keeping them forever means you have=20
> conflicts inside urself, and don't know what to do, so I'm telling u=20
> now what to do, REMOVE these IDs and no more representation by this ietf.

So you took my private email I sent directly to you, and sent it to the IET=
F without my permission, and you're now claiming rights to have things remo=
ved? What about my rights to not have my text sent to the IETF without my p=
ermission?

You're a very confused person.

--=20
Mikael Abrahamsson    email: swmike@swm.pp.se


From nobody Mon Jun  5 13:15:31 2017
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To: Khaled Omar <eng.khaled.omar@hotmail.com>
Cc: chair <chair@ietf.org>, int-area <int-area@ietf.org>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Tue, 6 Jun 2017 08:15:24 +1200
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Subject: Re: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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Khaled,

On 06/06/2017 04:51, Khaled Omar wrote:
> I replied to this e-mail long time ago.
> 
> These are my drafts as i'm the only author, I have the right to ask for uploading and removal, what is difficult in this too!!!

You have the right to ask for anything you want, but you gave the IETF
permission to publish the drafts and use the material as it wishes,
by submitting the drafts under the IETF conditions, as indicated
in the drafts themselves ("This Internet-Draft is submitted in full
conformance with the provisions of BCP 78 and BCP 79" etc.). So the
IETF is fully entitled to say no to your request.

I pointed out to you at a very early stage that your proposal suffers
from exactly the same problem as my own proposal in 1994, namely that
an untouched IPv4-only host can never communicate directly with an
extended address host. I'm not ashamed of that work, but it was useless.
Unfortunately the IETF archive doesn't go back that far, but I'm quite
happy that it's still visible at
https://www.cs.auckland.ac.nz/~brian/draft-carpenter-aeiou-00.txt

We all live and learn. Please do follow the IETF discussions and
participate in future.

Regards
   Brian


From nobody Mon Jun  5 13:59:46 2017
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From: Khaled Omar <eng.khaled.omar@hotmail.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
CC: chair <chair@ietf.org>, int-area <int-area@ietf.org>, "iesg@ietf.org" <iesg@ietf.org>
Thread-Topic: [Int-area] Fw: IPv10, KRP (RRP) IDs.
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Date: Mon, 5 Jun 2017 20:59:36 +0000
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From nobody Thu Jun  8 18:04:35 2017
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Subject: [Int-area] I-D Action: draft-ietf-intarea-tunnels-07.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Internet Area Working Group of the IETF.

        Title           : IP Tunnels in the Internet Architecture
        Authors         : Joe Touch
                          Mark Townsley
	Filename        : draft-ietf-intarea-tunnels-07.txt
	Pages           : 52
	Date            : 2017-06-08

Abstract:
   This document discusses the role of IP tunnels in the Internet
   architecture. An IP tunnel transits IP datagrams as payloads in non-
   link layer protocols. This document explains the relationship of IP
   tunnels to existing protocol layers and the challenges in supporting
   IP tunneling, based on the equivalence of tunnels to links. The
   implications of this document are used to derive recommendations that
   update MTU and fragment issues in RFC 4459.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-intarea-tunnels/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-intarea-tunnels-07
https://datatracker.ietf.org/doc/html/draft-ietf-intarea-tunnels-07

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-intarea-tunnels-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 Thu Jun  8 18:12:44 2017
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From: Joe Touch <touch@isi.edu>
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Subject: Re: [Int-area] I-D Action: draft-ietf-intarea-tunnels-07.txt
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Hi, all,

This is a quick update to reflect the change in intended document
status. Section 5 is now under active development, and will be posted
when ready for feedback.

Joe


On 6/8/2017 6:04 PM, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Internet Area Working Group of the IETF.
>
>         Title           : IP Tunnels in the Internet Architecture
>         Authors         : Joe Touch
>                           Mark Townsley
> 	Filename        : draft-ietf-intarea-tunnels-07.txt
> 	Pages           : 52
> 	Date            : 2017-06-08
>
> Abstract:
>    This document discusses the role of IP tunnels in the Internet
>    architecture. An IP tunnel transits IP datagrams as payloads in non-
>    link layer protocols. This document explains the relationship of IP
>    tunnels to existing protocol layers and the challenges in supporting
>    IP tunneling, based on the equivalence of tunnels to links. The
>    implications of this document are used to derive recommendations that
>    update MTU and fragment issues in RFC 4459.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-intarea-tunnels/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-intarea-tunnels-07
> https://datatracker.ietf.org/doc/html/draft-ietf-intarea-tunnels-07
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-intarea-tunnels-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/
>
> _______________________________________________
> Int-area mailing list
> Int-area@ietf.org
> https://www.ietf.org/mailman/listinfo/int-area


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Subject: [Int-area] Propagating ECN Across IP-shim-(L2)-IP: draft-ietf-tsvwg-rfc6040update-shim-02
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Wasim, Juan-Carlos, int-area list,

I have posted a major rev of draft-ietf-tsvwg-rfc6040update-shim-02
It now gives specific text updating those tunnel protocols that didn't 
mention ECN processing.
Pls review/comment.
I am not on the int-area list, so pls include my email explicitly.

It includes an update to GRE specifying a safe config for legacy GRE 
tunnel endpoints, and also specifies how GRE can be updated to support ECN.
It also updates L2TP v2 & v3, and it is planned to update Teredo, once I 
hear from Christian Huitema

It includes a list of other tunnel protocols in scope, which I believe 
is now complete (famous last words!)


It is planned to WGLC in tsvwg by Sep 2017.
Pls tell the doc Shepherd (David Black, in cc) if you want it WGLC'd in 
int-area too.
If you want me to present a heads-up in int-area in Prague, also pls 
just say.

I have sent similar notifications to relevant authors and:
* NVO3 regarding implications for VXLAN-GPE
* opsawg regarding implications for CAPWAP
* l2tpext regarding implications for L2TP
* tsvwg, which is the home for ECN activity

Cheers


Bob


-------- Forwarded Message --------
Subject: 	New Version draft-ietf-tsvwg-rfc6040update-shim-02
Date: 	Fri, 16 Jun 2017 15:47:58 +0100
From: 	Bob Briscoe <ietf@bobbriscoe.net>
To: 	Black, David <david.black@emc.com>
CC: 	tsvwg IETF list <tsvwg@ietf.org>



David, as doc shepherd.

I have just posted a major revision to draft-ietf-tsvwg-rfc6040update-shim

Please also take this as a request to give a 10min presentation in tsvwg.

As requested, I included specific text necessary to update certain shim 
tunnel protocols that didn't mention ECN at all (L2TPv2, L2TPv3, GRE).
There are two others to do:
* Teredo: I'll do this once I hear from the original author, Christian 
Huitema
* VXLAN-GPE: This is a draft currently going through NVO3 on the 
standards track. AFAIK the Linux implementation already supports ECN via 
RFC6040, but the authors will need to add ECN text to the spec, so there 
is something for other implementations to follow. I have contacted them 
- they should do this, not me.

I have also added more protocols to the list (e.g. CAPWAP, LISP), but 
these already supported ECN.

As you have seen, I have been in conversation with people on the l2tpext 
list, and on opsawg (for CAPWAP). I haven't found anyone specific to 
talk to regarding GRE yet, but I have notified int-area and I gave a 
heads-up at a recent IETF.


BTW, your plan was to last call draft-ietf-tsvwg-rfc6040update-shim 
along with ecn-encap-guidelines, deadline Sep 2017.
I should point out that draft-ietf-trill-ecn-support is in WGLC in 
trill, and it depends normatively on ecn-encap-guidelines

opsawg would like to last call draft-ietf-tsvwg-rfc6040update-shim as 
well (altho I have now realized that no update to CAPWAP is needed, but 
opsawg is now working on alternative tunnelling protocols to CAPWAP: 
draft-ietf-opsawg-capwap-alt-tunnel ). I guess int-area might want to 
last call draft-ietf-tsvwg-rfc6040update-shim too.



Bob


-------- Forwarded Message --------
Subject: 	New Version Notification for 
draft-ietf-tsvwg-rfc6040update-shim-02.txt
Date: 	Fri, 16 Jun 2017 07:14:46 -0700
From: 	internet-drafts@ietf.org
To: 	Bob Briscoe <ietf@bobbriscoe.net>



A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-02.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	02
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-16
Group:		tsvwg
Pages:		15
URL:https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-02.txt
Status:https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/
Htmlized:https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-02
Htmlized:https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-02
Diff:https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-02

Abstract:
    RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
    rules for propagation of ECN consistent for all forms of IP in IP
    tunnel.  This specification extends the scope of RFC 6040 to include
    tunnels where two IP headers are separated by at least one shim
    header that is not sufficient on its own for packet forwarding.  It
    surveys widely deployed IP tunnelling protocols separated by a shim
    and updates the specifications of those that do not mention ECN
    propagation (L2TPv2, L2TPv3, GRE and Teredo).  The specification also
    updates RFC 6040 with configuration requirements needed to make any
    legacy tunnel ingress safe.

                                                                                   


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


--------------6A8598B895095012921B5D2C
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    Wasim, Juan-Carlos, int-area list,<br>
    <br>
    I have posted a major rev of draft-ietf-tsvwg-rfc6040update-shim-02<br>
    It now gives specific text updating those tunnel protocols that
    didn't mention ECN processing.<br>
    Pls review/comment.
    <br>
    I am not on the int-area list, so pls include my email explicitly.
    <br>
    <br>
    It includes an update to GRE specifying a safe config for legacy GRE
    tunnel endpoints, and also specifies how GRE can be updated to
    support ECN.<br>
    It also updates L2TP v2 &amp; v3, and it is planned to update
    Teredo, once I hear from Christian Huitema<br>
    <br>
    It includes a list of other tunnel protocols in scope, which I
    believe is now complete (famous last words!)<br>
    <br>
    <br>
    It is planned to WGLC in tsvwg by Sep 2017.
    <br>
    Pls tell the doc Shepherd (David Black, in cc) if you want it WGLC'd
    in int-area too.
    <br>
    If you want me to present a heads-up in int-area in Prague, also pls
    just say.<br>
    <br>
    I have sent similar notifications to relevant authors and:<br>
    * NVO3 regarding implications for VXLAN-GPE<br>
    * opsawg regarding implications for CAPWAP<br>
    * l2tpext regarding implications for L2TP<br>
    * tsvwg, which is the home for ECN activity<br>
    <br>
    Cheers<br>
    <br>
    <br>
    Bob<br>
    <div class="moz-forward-container"><br>
      <br>
      -------- Forwarded Message --------
      <table class="moz-email-headers-table" cellspacing="0"
        cellpadding="0" border="0">
        <tbody>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Subject:
            </th>
            <td>New Version draft-ietf-tsvwg-rfc6040update-shim-02</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date: </th>
            <td>Fri, 16 Jun 2017 15:47:58 +0100</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">From: </th>
            <td>Bob Briscoe <a class="moz-txt-link-rfc2396E" href="mailto:ietf@bobbriscoe.net">&lt;ietf@bobbriscoe.net&gt;</a></td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
            <td>Black, David <a class="moz-txt-link-rfc2396E" href="mailto:david.black@emc.com">&lt;david.black@emc.com&gt;</a></td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">CC: </th>
            <td>tsvwg IETF list <a class="moz-txt-link-rfc2396E" href="mailto:tsvwg@ietf.org">&lt;tsvwg@ietf.org&gt;</a></td>
          </tr>
        </tbody>
      </table>
      <br>
      <br>
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      David, as doc shepherd.<br>
      <br>
      I have just posted a major revision to
      draft-ietf-tsvwg-rfc6040update-shim<br>
      <br>
      Please also take this as a request to give a 10min presentation in
      tsvwg.<br>
      <br>
      As requested, I included specific text necessary to update certain
      shim tunnel protocols that didn't mention ECN at all (L2TPv2,
      L2TPv3, GRE).<br>
      There are two others to do: <br>
      * Teredo: I'll do this once I hear from the original author,
      Christian Huitema<br>
      * VXLAN-GPE: This is a draft currently going through NVO3 on the
      standards track. AFAIK the Linux implementation already supports
      ECN via RFC6040, but the authors will need to add ECN text to the
      spec, so there is something for other implementations to follow. I
      have contacted them - they should do this, not me.<br>
      <br>
      I have also added more protocols to the list (e.g. CAPWAP, LISP),
      but these already supported ECN.<br>
      <br>
      As you have seen, I have been in conversation with people on the
      l2tpext list, and on opsawg (for CAPWAP). I haven't found anyone
      specific to talk to regarding GRE yet, but I have notified
      int-area and I gave a heads-up at a recent IETF.<br>
      <br>
      <br>
      BTW, your plan was to last call
      draft-ietf-tsvwg-rfc6040update-shim along with
      ecn-encap-guidelines, deadline Sep 2017.<br>
      I should point out that draft-ietf-trill-ecn-support is in WGLC in
      trill, and it depends normatively on ecn-encap-guidelines<br>
      <br>
      opsawg would like to last call draft-ietf-tsvwg-rfc6040update-shim
      as well (altho I have now realized that no update to CAPWAP is
      needed, but opsawg is now working on alternative tunnelling
      protocols to CAPWAP: draft-ietf-opsawg-capwap-alt-tunnel ). I
      guess int-area might want to last call
      draft-ietf-tsvwg-rfc6040update-shim too. <br>
      <br>
      <br>
      <br>
      Bob<br>
      <div class="moz-forward-container"><br>
        <br>
        -------- Forwarded Message --------
        <table class="moz-email-headers-table" cellspacing="0"
          cellpadding="0" border="0">
          <tbody>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Subject:
              </th>
              <td>New Version Notification for
                draft-ietf-tsvwg-rfc6040update-shim-02.txt</td>
            </tr>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date:
              </th>
              <td>Fri, 16 Jun 2017 07:14:46 -0700</td>
            </tr>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">From:
              </th>
              <td><a class="moz-txt-link-abbreviated"
                  href="mailto:internet-drafts@ietf.org"
                  moz-do-not-send="true">internet-drafts@ietf.org</a></td>
            </tr>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
              <td>Bob Briscoe <a class="moz-txt-link-rfc2396E"
                  href="mailto:ietf@bobbriscoe.net"
                  moz-do-not-send="true">&lt;ietf@bobbriscoe.net&gt;</a></td>
            </tr>
          </tbody>
        </table>
        <br>
        <br>
        <pre>A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-02.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	02
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-16
Group:		tsvwg
Pages:		15
URL:            <a class="moz-txt-link-freetext" href="https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-02.txt" moz-do-not-send="true">https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-02.txt</a>
Status:         <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/" moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-02" moz-do-not-send="true">https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-02</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-02" moz-do-not-send="true">https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-02</a>
Diff:           <a class="moz-txt-link-freetext" href="https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-02" moz-do-not-send="true">https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-02</a>

Abstract:
   RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
   rules for propagation of ECN consistent for all forms of IP in IP
   tunnel.  This specification extends the scope of RFC 6040 to include
   tunnels where two IP headers are separated by at least one shim
   header that is not sufficient on its own for packet forwarding.  It
   surveys widely deployed IP tunnelling protocols separated by a shim
   and updates the specifications of those that do not mention ECN
   propagation (L2TPv2, L2TPv3, GRE and Teredo).  The specification also
   updates RFC 6040 with configuration requirements needed to make any
   legacy tunnel ingress safe.

                                                                                  


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

</pre>
      </div>
    </div>
  </body>
</html>

--------------6A8598B895095012921B5D2C--


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Date: Thu, 22 Jun 2017 20:44:54 +0300 (EEST)
From: =?utf-8?Q?Drago=C8=99?= Niculescu <dragos.niculescu@cs.pub.ro>
To: int-area@ietf.org
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Subject: [Int-area] SOCKSv6
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Hello,=20

At University Politehnica of Bucharest we have a project building a TCP pro=
xy protocol that is meant as an upgrade to SOCKS to leverage some benefits =
at the transport layer that came after SOCKSv5 such as TCP fastopen, and mu=
ltipath TCP. The current design targets the following advantages:=20

1. Reduced RTTs compared to SOCKSv5;=20
2. Can leverage TFO on the client-proxy and/or proxy-server leg;
3. Enhances MPTCP proxy assisted deployment, can achieve 0-RTT authenticati=
on;   =20

Our prototype is coming along nicely and will hopefully be deployed at Oran=
ge Romania next year, but we are interested in standardizing it too.
The last SOCKSv5 protocol(RFC1928) was standardized 20 years ago in the "Ne=
twork Working Group", is INTAREA WG the right venue to discuss this?=20

Any suggestion is appreciated.=20
--=20
Drago=C8=99


From nobody Fri Jun 23 12:55:40 2017
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Subject: [Int-area] I-D Action: draft-ietf-intarea-probe-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Internet Area Working Group of the IETF.

        Title           : PROBE: A Utility For Probing Interfaces
        Authors         : Ron Bonica
                          Reji Thomas
                          Jen Linkova
                          Chris Lenart
                          Mohamed Boucadair
	Filename        : draft-ietf-intarea-probe-00.txt
	Pages           : 17
	Date            : 2017-06-23

Abstract:
   This document describes a network diagnostic tool called PROBE.
   PROBE is similar to PING, in that it can be used to test the status
   of a probed interface.  It differs from PING in that it does not
   require bidirectional connectivity between the probing and probed
   interfaces.  Alternatively, PROBE requires bidirectional connectivity
   between the probing interface and a proxy interface.  The proxy
   interface can reside on the same node as the probed interface or it
   can reside on a node to which the probed interface is directly
   connected.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-intarea-probe/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-intarea-probe-00
https://datatracker.ietf.org/doc/html/draft-ietf-intarea-probe-00


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/


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Subject: [Int-area] intarea - Requested session has been scheduled for IETF 99
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Dear Wassim Haddad,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 

intarea Session 1 (1:30:00)
    Thursday, Morning Session I 0930-1200
    Room Name: Grand Hilton Ballroom size: 250
    ---------------------------------------------
    


Request Information:


---------------------------------------------------------
Working Group Name: Internet Area Working Group
Area Name: Internet Area
Session Requester: Wassim Haddad

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: lpwan 6tisch 6man homenet v6ops irtfopen 6lo dhc saag lisp nvo3 t2trg
 Second Priority: softwire sunset4 tsvwg dnsop netconf nfvrg



People who must be present:
  Wassim Haddad
  Suresh Krishnan
  Juan Carlos Zuniga

Resources Requested:

Special Requests:
  
---------------------------------------------------------


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From: Wassim Haddad <wassim.haddad@ericsson.com>
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Hi,

I would like to point your attention to a new draft that presents
guidelines for defining packet timestamp formats. Please see the abstract
and links below.

Any comments will be welcome.

Cheers,
Tal, Joachim, and Al.



-----Original Message-----
From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
Sent: Tuesday, June 27, 2017 11:35 AM
To: Joachim Fabini; Tal Mizrahi; Al Morton
Subject: New Version Notification for
draft-mizrahi-intarea-packet-timestamps-00.txt


A new version of I-D, draft-mizrahi-intarea-packet-timestamps-00.txt
has been successfully submitted by Tal Mizrahi and posted to the IETF
repository.

Name:           draft-mizrahi-intarea-packet-timestamps
Revision:       00
Title:          Guidelines for Defining Packet Timestamps
Document date:  2017-06-27
Group:          Individual Submission
Pages:          12
URL:            https://www.ietf.org/internet-drafts/draft-mizrahi-intarea-
packet-timestamps-00.txt
Status:         https://datatracker.ietf.org/doc/draft-mizrahi-intarea-
packet-timestamps/
Htmlized:       https://tools.ietf.org/html/draft-mizrahi-intarea-packet-
timestamps-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-mizrahi-
intarea-packet-timestamps-00


Abstract:
   This document specifies guidelines for defining binary packet
   timestamp formats in networking protocols at various layers.  It also
   presents three recommended timestamp formats.  The target audience of
   this memo includes network protocol designers.  It is expected that a
   new network protocol that requires a packet timestamp will, in most
   cases, use one of the recommended timestamp formats.  If none of the
   recommended formats fits the protocol requirements, the new protocol
   specification should specify the format of the packet timestamp
   according to the guidelines in this document.




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

--94eb2c19c90e83954b0552ed130e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>I would like to point yo=
ur attention to a new draft that presents guidelines for defining packet ti=
mestamp formats. Please see the abstract and links below.</div><div><br></d=
iv><div>Any comments will be welcome.</div><div><br></div><div>Cheers,</div=
><div>Tal, Joachim, and Al.</div><div><br></div><div><br></div><br><div cla=
ss=3D"gmail_quote"><div class=3D"gmail_quote">-----Original Message-----</d=
iv><div class=3D"gmail_quote">From: <a href=3D"mailto:internet-drafts@ietf.=
org">internet-drafts@ietf.org</a> [mailto:<a href=3D"mailto:internet-drafts=
@ietf.org">internet-drafts@ietf.org</a>]=C2=A0</div><div class=3D"gmail_quo=
te">Sent: Tuesday, June 27, 2017 11:35 AM</div><div class=3D"gmail_quote">T=
o: Joachim Fabini; Tal Mizrahi; Al Morton</div><div class=3D"gmail_quote">S=
ubject: New Version Notification for draft-mizrahi-intarea-packet-timestamp=
s-00.txt</div><div><br></div><br>
A new version of I-D, draft-mizrahi-intarea-packet-<wbr>timestamps-00.txt<b=
r>
has been successfully submitted by Tal Mizrahi and posted to the IETF repos=
itory.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-mizrahi-intarea-packet-=
<wbr>timestamps<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A000<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Guidelines for Defining Packet Tim=
estamps<br>
Document date:=C2=A0 2017-06-27<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 12<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-mizrahi-intarea-packet-timestamps-00.txt" rel=3D"n=
oreferrer" target=3D"_blank">https://www.ietf.org/internet-<wbr>drafts/draf=
t-mizrahi-intarea-<wbr>packet-timestamps-00.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-mizrahi-intarea-packet-timestamps/" rel=3D"noreferrer" targ=
et=3D"_blank">https://datatracker.ietf.org/<wbr>doc/draft-mizrahi-intarea-<=
wbr>packet-timestamps/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-mizrahi-intarea-packet-timestamps-00" rel=3D"noreferrer" target=3D"_b=
lank">https://tools.ietf.org/html/<wbr>draft-mizrahi-intarea-packet-<wbr>ti=
mestamps-00</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-mizrahi-intarea-packet-timestamps-00" rel=3D"noreferrer" ta=
rget=3D"_blank">https://datatracker.ietf.org/<wbr>doc/html/draft-mizrahi-<w=
br>intarea-packet-timestamps-00</a><br>
<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document specifies guidelines for defining binary packet<=
br>
=C2=A0 =C2=A0timestamp formats in networking protocols at various layers.=
=C2=A0 It also<br>
=C2=A0 =C2=A0presents three recommended timestamp formats.=C2=A0 The target=
 audience of<br>
=C2=A0 =C2=A0this memo includes network protocol designers.=C2=A0 It is exp=
ected that a<br>
=C2=A0 =C2=A0new network protocol that requires a packet timestamp will, in=
 most<br>
=C2=A0 =C2=A0cases, use one of the recommended timestamp formats.=C2=A0 If =
none of the<br>
=C2=A0 =C2=A0recommended formats fits the protocol requirements, the new pr=
otocol<br>
=C2=A0 =C2=A0specification should specify the format of the packet timestam=
p<br>
=C2=A0 =C2=A0according to the guidelines in this document.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n until the htmlized version and diff are available at <a href=3D"http://to=
ols.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div><br></div>

--94eb2c19c90e83954b0552ed130e--


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To: "Black, David" <david.black@emc.com>, "Carlos Pignataro (cpignata)" <cpignata@cisco.com>, Ignacio Goyret <ignacio.goyret@nokia.com>, Alia ATLAS <akatlas@gmail.com>, Praveen Balasubramanian <pravb@microsoft.com>, Joe Touch <touch@isi.edu>, "nvo3@ietf.org" <nvo3@ietf.org>, Christian Huitema <huitema@microsoft.com>
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Subject: [Int-area] ECN over IP-shim-(L2)-IP Tunnels: New draft-ietf-tsvwg-rfc6040update-shim-03
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David (as doc shepherd),

This is the 3rd revision in the last 2 months. This revision attempts to 
capture all the comments collected thanks to Carlos, Ignacio, Praveen, 
Joe and Alia. It would be useful to have a confirmation from each of you 
that I have addressed your concerns (or not).

I have cross-posted all the lists potentially affected by this draft 
(intended proposed standard).
If you reply concerning a specific point, pls trim the distribution only 
to those interested/relevant.

* tsvwg: owns updates to ECN
* int-area: owns mtce of many tunnelling protocols, particularly GRE?, 
Teredo? GUE
* l2tpext: owns mtce of L2TP
* opsawg: owns mtce of CAPWAP
* nvo3: currently defining Geneve, VXLAN-GPE
* sfc: currently defining NSH

 From my point of view, this draft is now 'finished'. I.e. I am happy 
with it, and it is the first draft where all the ToDo's are done. I 
believe it is on track for the milestone of WGLC before the Nov'17 IETF. 
As I understand it, WGLC will run in tsvwg and in parallel in int-area, 
l2tpext and perhaps opsawg.

Main changes since -02:
* Completely restructured, with definitions of scope before even 
mentioning "tightly coupled shim headers", and new subsections where 
existing text on feasibility and desirability has been re-homed.
* Explanation of the safety problem, and the procedural problem this 
caused when previous ECN RFCs were written (an RFC cannot 
retrospectively set requirements on implementations, so we can only set 
operational requirements - configuration).
* Added NSH, but it doesn't seem to cover encapsulation.
* No longer categorized VXLAN-GPE as intended for standards track
* Added Teredo update text (for safety).

Cheers


Bob

-------- Forwarded Message --------
Subject: 	New Version Notification for 
draft-ietf-tsvwg-rfc6040update-shim-03.txt
Date: 	Tue, 27 Jun 2017 04:13:58 -0700
From: 	internet-drafts@ietf.org
To: 	Bob Briscoe <ietf@bobbriscoe.net>



A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-03.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	03
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-27
Group:		tsvwg
Pages:		16
URL:            https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt
Status:         https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/
Htmlized:       https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03
Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03
Diff:           https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03

Abstract:
    RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
    rules for propagation of ECN consistent for all forms of IP in IP
    tunnel.  This specification updates RFC 6040 to clarify that its
    scope includes tunnels where two IP headers are separated by at least
    one shim header that is not sufficient on its own for wide area
    packet forwarding.  It surveys widely deployed IP tunnelling
    protocols separated by such shim header(s) and updates the
    specifications of those that do not mention ECN propagation (L2TPv2,
    L2TPv3, GRE and Teredo).  This specification also updates RFC 6040
    with configuration requirements needed to make any legacy tunnel
    ingress safe.

                                                                                   


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


--------------6A1261D435D710497D63773F
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Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    David (as doc shepherd),<br>
    <br>
    This is the 3rd revision in the last 2 months. This revision
    attempts to capture all the comments collected thanks to Carlos,
    Ignacio, Praveen, Joe and Alia. It would be useful to have a
    confirmation from each of you that I have addressed your concerns
    (or not). <br>
    <br>
    I have cross-posted all the lists potentially affected by this draft
    (intended proposed standard).<br>
    If you reply concerning a specific point, pls trim the distribution
    only to those interested/relevant.<br>
    <br>
    * tsvwg: owns updates to ECN <br>
    * int-area: owns mtce of many tunnelling protocols, particularly
    GRE?, Teredo? GUE<br>
    * l2tpext: owns mtce of L2TP<br>
    * opsawg: owns mtce of CAPWAP<br>
    * nvo3: currently defining Geneve, VXLAN-GPE<br>
    * sfc: currently defining NSH<br>
    <div class="moz-forward-container"><br>
    </div>
    From my point of view, this draft is now 'finished'. I.e. I am happy
    with it, and it is the first draft where all the ToDo's are done. I
    believe it is on track for the milestone of WGLC before the Nov'17
    IETF. As I understand it, WGLC will run in tsvwg and in parallel in
    int-area, l2tpext and perhaps opsawg.<br>
    <br>
    Main changes since -02:<br>
    <div class="moz-forward-container">* Completely restructured, with
      definitions of scope before even mentioning "tightly coupled shim
      headers", and new subsections where existing text on feasibility
      and desirability has been re-homed.<br>
      * Explanation of the safety problem, and the procedural problem
      this caused when previous ECN RFCs were written (an RFC cannot
      retrospectively set requirements on implementations, so we can
      only set operational requirements - configuration).<br>
      * Added NSH, but it doesn't seem to cover encapsulation.<br>
      * No longer categorized VXLAN-GPE as intended for standards track<br>
      * Added Teredo update text (for safety).<br>
      <br>
      Cheers<br>
      <br>
      <br>
      Bob<br>
      <br>
      -------- Forwarded Message --------
      <table class="moz-email-headers-table" cellspacing="0"
        cellpadding="0" border="0">
        <tbody>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Subject:
            </th>
            <td>New Version Notification for
              draft-ietf-tsvwg-rfc6040update-shim-03.txt</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date: </th>
            <td>Tue, 27 Jun 2017 04:13:58 -0700</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">From: </th>
            <td><a class="moz-txt-link-abbreviated" href="mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a></td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
            <td>Bob Briscoe <a class="moz-txt-link-rfc2396E" href="mailto:ietf@bobbriscoe.net">&lt;ietf@bobbriscoe.net&gt;</a></td>
          </tr>
        </tbody>
      </table>
      <br>
      <br>
      <pre>A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-03.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	03
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-27
Group:		tsvwg
Pages:		16
URL:            <a class="moz-txt-link-freetext" href="https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt">https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt</a>
Status:         <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/">https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03">https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03">https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03</a>
Diff:           <a class="moz-txt-link-freetext" href="https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03">https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03</a>

Abstract:
   RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
   rules for propagation of ECN consistent for all forms of IP in IP
   tunnel.  This specification updates RFC 6040 to clarify that its
   scope includes tunnels where two IP headers are separated by at least
   one shim header that is not sufficient on its own for wide area
   packet forwarding.  It surveys widely deployed IP tunnelling
   protocols separated by such shim header(s) and updates the
   specifications of those that do not mention ECN propagation (L2TPv2,
   L2TPv3, GRE and Teredo).  This specification also updates RFC 6040
   with configuration requirements needed to make any legacy tunnel
   ingress safe.

                                                                                  


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

</pre>
    </div>
  </body>
</html>

--------------6A1261D435D710497D63773F--


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To: int-area@ietf.org
From: Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>
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Subject: [Int-area] SOCKS 6 Draft
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Hello,

We have submitted a draft describing a new version of the SOCKS=20
protocol. You can find the abstract and a link to the draft below.

Best,
Vlad and Drago=C8=99

-------- Forwarded Message --------
Subject: 	New Version Notification for draft-olteanu-intarea-socks-6-00.t=
xt
Date: 	Wed, 28 Jun 2017 22:01:16 -0700
From: 	internet-drafts@ietf.org
To: 	Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>, Dragos Niculescu=20
<dragos.niculescu@cs.pub.ro>



A new version of I-D, draft-olteanu-intarea-socks-6-00.txt
has been successfully submitted by Vladimir Olteanu and posted to the
IETF repository.

Name:		draft-olteanu-intarea-socks-6
Revision:	00
Title:		SOCKS Protocol Version 6
Document date:	2017-06-28
Group:		Individual Submission
Pages:		12
URL:            https://www.ietf.org/internet-drafts/draft-olteanu-intare=
a-socks-6-00.txt
Status:         https://datatracker.ietf.org/doc/draft-olteanu-intarea-so=
cks-6/
Htmlized:       https://tools.ietf.org/html/draft-olteanu-intarea-socks-6=
-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-olteanu-intar=
ea-socks-6-00


Abstract:
    The SOCKS protocol is used primarily to proxy TCP connections to
    arbitrary destinations via the use of a proxy server.  Under the
    latest version of the protocol (version 5), it takes 2 RTTs (or 3, if
    authentication is used) before data can flow between the client and
    the server.

    This memo proposes SOCKS version 6, which reduces the number of RTTs
    used, takes full advantage of TCP Fast Open, and adds support for
    0-RTT authentication.

                                                                         =
         =20


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

The IETF Secretariat


--------------BA277A70D408CF2792FAB21E
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<html>
  <head>

    <meta http-equiv=3D"content-type" content=3D"text/html; charset=3Dutf=
-8">
  </head>
  <body text=3D"#000000" bgcolor=3D"#FFFFFF">
    Hello,<br>
    <br>
    We have submitted a draft describing a new version of the SOCKS
    protocol. You can find the abstract and a link to the draft below.<br=
>
    <br>
    Best,<br>
    Vlad and Drago=C8=99<br>
    <div class=3D"moz-forward-container"><br>
      -------- Forwarded Message --------
      <table class=3D"moz-email-headers-table" cellspacing=3D"0"
        cellpadding=3D"0" border=3D"0">
        <tbody>
          <tr>
            <th nowrap=3D"nowrap" valign=3D"BASELINE" align=3D"RIGHT">Sub=
ject:
            </th>
            <td>New Version Notification for
              draft-olteanu-intarea-socks-6-00.txt</td>
          </tr>
          <tr>
            <th nowrap=3D"nowrap" valign=3D"BASELINE" align=3D"RIGHT">Dat=
e: </th>
            <td>Wed, 28 Jun 2017 22:01:16 -0700</td>
          </tr>
          <tr>
            <th nowrap=3D"nowrap" valign=3D"BASELINE" align=3D"RIGHT">Fro=
m: </th>
            <td><a class=3D"moz-txt-link-abbreviated" href=3D"mailto:inte=
rnet-drafts@ietf.org">internet-drafts@ietf.org</a></td>
          </tr>
          <tr>
            <th nowrap=3D"nowrap" valign=3D"BASELINE" align=3D"RIGHT">To:=
 </th>
            <td>Vladimir Olteanu <a class=3D"moz-txt-link-rfc2396E" href=3D=
"mailto:vladimir.olteanu@cs.pub.ro">&lt;vladimir.olteanu@cs.pub.ro&gt;</a=
>,
              Dragos Niculescu <a class=3D"moz-txt-link-rfc2396E" href=3D=
"mailto:dragos.niculescu@cs.pub.ro">&lt;dragos.niculescu@cs.pub.ro&gt;</a=
></td>
          </tr>
        </tbody>
      </table>
      <br>
      <br>
      <pre>A new version of I-D, draft-olteanu-intarea-socks-6-00.txt
has been successfully submitted by Vladimir Olteanu and posted to the
IETF repository.

Name:		draft-olteanu-intarea-socks-6
Revision:	00
Title:		SOCKS Protocol Version 6
Document date:	2017-06-28
Group:		Individual Submission
Pages:		12
URL:            <a class=3D"moz-txt-link-freetext" href=3D"https://www.ie=
tf.org/internet-drafts/draft-olteanu-intarea-socks-6-00.txt">https://www.=
ietf.org/internet-drafts/draft-olteanu-intarea-socks-6-00.txt</a>
Status:         <a class=3D"moz-txt-link-freetext" href=3D"https://datatr=
acker.ietf.org/doc/draft-olteanu-intarea-socks-6/">https://datatracker.ie=
tf.org/doc/draft-olteanu-intarea-socks-6/</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" href=3D"https://tools.=
ietf.org/html/draft-olteanu-intarea-socks-6-00">https://tools.ietf.org/ht=
ml/draft-olteanu-intarea-socks-6-00</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" href=3D"https://datatr=
acker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-00">https://datatra=
cker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-00</a>


Abstract:
   The SOCKS protocol is used primarily to proxy TCP connections to
   arbitrary destinations via the use of a proxy server.  Under the
   latest version of the protocol (version 5), it takes 2 RTTs (or 3, if
   authentication is used) before data can flow between the client and
   the server.

   This memo proposes SOCKS version 6, which reduces the number of RTTs
   used, takes full advantage of TCP Fast Open, and adds support for
   0-RTT authentication.

                                                                         =
        =20


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

The IETF Secretariat

</pre>
    </div>
  </body>
</html>

--------------BA277A70D408CF2792FAB21E--


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Hi Vladimir,

Thanks for writing this up, I agree SOCKS needs to be modernized and I =
think your draft
has a lot of good ideas. A few questions:

- Why do you mimic the TFO semantics so closely?
Since SOCKSv6 runs over TCP, I'm not sure I understand the meaning of =
the initial data offset.
The server can pull enough data for the upstream TCP SYN from its =
initial window
and leave the rest of the SOCKSv6 initial data there for later, instead =
of resending it twice.

- Does it make sense to keep sending the version number over the wire?
Proxy protocols need to be provisioned out of band (e.g. SOCKS vs HTTP, =
port number)
and there is no way for a SOCKSv5 server to reply "I don't speak =
SOCKSv6".
I'm not sure I see the value of a minor version either, as there's still =
plenty of room
for major versions 7-255.

- Instead of having a command code enum with 3 values and a TFO enum =
with 2 values,
could we instead add a CONNECT_WITH_TFO command code to save a byte?
We could even take that one step further and also merge in the address =
type enum.

- One pain point I had when implementing SOCKSv5 was the fact that the =
port number
was after the address which meant that it moved, would it make sense to =
place it before
the variable length address field to simplify and optimize parsing?

- Could we make the client supported auth methods optional?
Since the client is sending tentative auth proposals as options, one =
could imagine
making the list of supported auth methods an option, an treating it as =
"I only support
no auth" when it's not there

- Out of curiosity, what specific use case are you using this protocol =
for?

Thanks,
David Schinazi


> On Jun 29, 2017, at 05:08, Vladimir Olteanu =
<vladimir.olteanu@cs.pub.ro> wrote:
>=20
> Hello,
>=20
> We have submitted a draft describing a new version of the SOCKS =
protocol. You can find the abstract and a link to the draft below.
>=20
> Best,
> Vlad and Drago=C8=99
>=20
>=20
>=20
> -------- Forwarded Message --------
> Subject:	New Version Notification for =
draft-olteanu-intarea-socks-6-00.txt
> Date:	Wed, 28 Jun 2017 22:01:16 -0700
> From:	internet-drafts@ietf.org <mailto:internet-drafts@ietf.org>
> To:	Vladimir Olteanu <vladimir.olteanu@cs.pub.ro> =
<mailto:vladimir.olteanu@cs.pub.ro>, Dragos Niculescu =
<dragos.niculescu@cs.pub.ro> <mailto:dragos.niculescu@cs.pub.ro>
>=20
> A new version of I-D, draft-olteanu-intarea-socks-6-00.txt
> has been successfully submitted by Vladimir Olteanu and posted to the
> IETF repository.
>=20
> Name:		draft-olteanu-intarea-socks-6
> Revision:	00
> Title:		SOCKS Protocol Version 6
> Document date:	2017-06-28
> Group:		Individual Submission
> Pages:		12
> URL:            =
https://www.ietf.org/internet-drafts/draft-olteanu-intarea-socks-6-00.txt =
<https://www.ietf.org/internet-drafts/draft-olteanu-intarea-socks-6-00.txt=
>
> Status:         =
https://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/ =
<https://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/>
> Htmlized:       =
https://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00 =
<https://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00>
> Htmlized:       =
https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-00 =
<https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-00>
>=20
>=20
> Abstract:
>    The SOCKS protocol is used primarily to proxy TCP connections to
>    arbitrary destinations via the use of a proxy server.  Under the
>    latest version of the protocol (version 5), it takes 2 RTTs (or 3, =
if
>    authentication is used) before data can flow between the client and
>    the server.
>=20
>    This memo proposes SOCKS version 6, which reduces the number of =
RTTs
>    used, takes full advantage of TCP Fast Open, and adds support for
>    0-RTT authentication.
>=20
>                                                                        =
          =20
>=20
>=20
> 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.
>=20
> The IETF Secretariat
>=20


--Boundary_(ID_wa/9wejaAMVTE4lPJXg7Tg)
Content-type: text/html; charset=utf-8
Content-transfer-encoding: quoted-printable

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi Vladimir,<div class=3D""><br class=3D""></div><div =
class=3D"">Thanks for writing this up, I agree SOCKS needs to be =
modernized and I think your draft</div><div class=3D"">has a lot of good =
ideas. A few questions:</div><div class=3D""><br class=3D""></div><div =
class=3D"">- Why do you mimic the TFO semantics so closely?</div><div =
class=3D"">Since SOCKSv6 runs over TCP, I'm not sure I understand the =
meaning of the initial data offset.</div><div class=3D"">The server can =
pull enough data for the upstream TCP SYN from its initial =
window</div><div class=3D"">and leave the rest of the SOCKSv6 initial =
data there for later, instead of resending it twice.</div><div =
class=3D""><br class=3D""></div><div class=3D"">- Does it make sense to =
keep sending the version number over the wire?</div><div class=3D"">Proxy =
protocols need to be provisioned out of band (e.g. SOCKS vs HTTP, port =
number)</div><div class=3D"">and there is no way for a SOCKSv5 server to =
reply "I don't speak SOCKSv6".</div><div class=3D"">I'm not sure I see =
the value of a minor version either, as there's still plenty of =
room</div><div class=3D"">for major versions 7-255.</div><div =
class=3D""><br class=3D""></div><div class=3D"">- Instead of having a =
command code enum with 3 values and a TFO enum with 2 values,</div><div =
class=3D"">could we instead add a CONNECT_WITH_TFO command code to save =
a byte?</div><div class=3D"">We could even take that one step further =
and also merge in the address type enum.</div><div class=3D""><br =
class=3D""></div><div class=3D"">- One pain point I had when =
implementing SOCKSv5 was the fact that the port number</div><div =
class=3D"">was after the address which meant that it moved, would it =
make sense to place it before</div><div class=3D"">the variable length =
address field to simplify and optimize parsing?</div><div class=3D""><br =
class=3D""></div><div class=3D"">- Could we make the client supported =
auth methods optional?</div><div class=3D"">Since the client is sending =
tentative auth proposals as options, one could imagine</div><div =
class=3D"">making the list of supported auth methods an option, an =
treating it as "I only support</div><div class=3D"">no auth" when it's =
not there</div><div class=3D""><br class=3D""></div><div class=3D"">- =
Out of curiosity, what specific use case are you using this protocol =
for?</div><div class=3D""><br class=3D""></div><div =
class=3D"">Thanks,</div><div class=3D"">David Schinazi</div><div =
class=3D""><br class=3D""></div><div class=3D""><br =
class=3D""><div><blockquote type=3D"cite" class=3D""><div class=3D"">On =
Jun 29, 2017, at 05:08, Vladimir Olteanu &lt;<a =
href=3D"mailto:vladimir.olteanu@cs.pub.ro" =
class=3D"">vladimir.olteanu@cs.pub.ro</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D"">
 =20

    <meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8" class=3D"">
 =20
  <div text=3D"#000000" bgcolor=3D"#FFFFFF" class=3D""><p class=3D""> =
Hello,<br class=3D"">
      <br class=3D"">
      We have submitted a draft describing a new version of the SOCKS
      protocol. You can find the abstract and a link to the draft =
below.<br class=3D"">
      <br class=3D"">
      Best,<br class=3D"">
      Vlad and Drago=C8=99</p>
    <div class=3D"moz-forward-container"><br class=3D"">
      <br class=3D"">
      -------- Forwarded Message --------
      <table class=3D"moz-email-headers-table" border=3D"0" =
cellspacing=3D"0" cellpadding=3D"0">
        <tbody class=3D"">
          <tr class=3D"">
            <th valign=3D"BASELINE" align=3D"RIGHT" nowrap=3D"nowrap" =
class=3D"">Subject:
            </th>
            <td class=3D"">New Version Notification for
              draft-olteanu-intarea-socks-6-00.txt</td>
          </tr>
          <tr class=3D"">
            <th valign=3D"BASELINE" align=3D"RIGHT" nowrap=3D"nowrap" =
class=3D"">Date: </th>
            <td class=3D"">Wed, 28 Jun 2017 22:01:16 -0700</td>
          </tr>
          <tr class=3D"">
            <th valign=3D"BASELINE" align=3D"RIGHT" nowrap=3D"nowrap" =
class=3D"">From: </th>
            <td class=3D""><a class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a></td>=

          </tr>
          <tr class=3D"">
            <th valign=3D"BASELINE" align=3D"RIGHT" nowrap=3D"nowrap" =
class=3D"">To: </th>
            <td class=3D"">Vladimir Olteanu <a =
class=3D"moz-txt-link-rfc2396E" =
href=3D"mailto:vladimir.olteanu@cs.pub.ro">&lt;vladimir.olteanu@cs.pub.ro&=
gt;</a>,
              Dragos Niculescu <a class=3D"moz-txt-link-rfc2396E" =
href=3D"mailto:dragos.niculescu@cs.pub.ro">&lt;dragos.niculescu@cs.pub.ro&=
gt;</a></td>
          </tr>
        </tbody>
      </table>
      <br class=3D"">
      <br class=3D"">
      <pre class=3D"">A new version of I-D, =
draft-olteanu-intarea-socks-6-00.txt
has been successfully submitted by Vladimir Olteanu and posted to the
IETF repository.

Name:		draft-olteanu-intarea-socks-6
Revision:	00
Title:		SOCKS Protocol Version 6
Document date:	2017-06-28
Group:		Individual Submission
Pages:		12
URL:            <a class=3D"moz-txt-link-freetext" =
href=3D"https://www.ietf.org/internet-drafts/draft-olteanu-intarea-socks-6=
-00.txt">https://www.ietf.org/internet-drafts/draft-olteanu-intarea-socks-=
6-00.txt</a>
Status:         <a class=3D"moz-txt-link-freetext" =
href=3D"https://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/">h=
ttps://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" =
href=3D"https://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00">http=
s://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" =
href=3D"https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-socks-=
6-00">https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-=
00</a>


Abstract:
   The SOCKS protocol is used primarily to proxy TCP connections to
   arbitrary destinations via the use of a proxy server.  Under the
   latest version of the protocol (version 5), it takes 2 RTTs (or 3, if
   authentication is used) before data can flow between the client and
   the server.

   This memo proposes SOCKS version 6, which reduces the number of RTTs
   used, takes full advantage of TCP Fast Open, and adds support for
   0-RTT authentication.

                                                                         =
        =20


Please note that it may take a couple of minutes from the time of =
submission
until the htmlized version and diff are available at <a =
href=3D"http://tools.ietf.org" class=3D"">tools.ietf.org</a>.

The IETF Secretariat

</pre>
    </div>
  </div>

</div></blockquote></div><br class=3D""></div></body></html>=

--Boundary_(ID_wa/9wejaAMVTE4lPJXg7Tg)--


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To: David Schinazi <dschinazi@apple.com>, Int-area@ietf.org
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From: Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>
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Subject: Re: [Int-area] SOCKS 6 Draft
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Hey David,

Thanks for the kind words. I'll address your questions inline:

On 6/29/2017 9:09 PM, David Schinazi wrote:
> Hi Vladimir,
>
> Thanks for writing this up, I agree SOCKS needs to be modernized and I=20
> think your draft
> has a lot of good ideas. A few questions:
>
> - Why do you mimic the TFO semantics so closely?
> Since SOCKSv6 runs over TCP, I'm not sure I understand the meaning of=20
> the initial data offset.
> The server can pull enough data for the upstream TCP SYN from its=20
> initial window
> and leave the rest of the SOCKSv6 initial data there for later,=20
> instead of resending it twice.
>
The main idea is to let the client send some data before running the=20
authentication protocol. The initial data offset gives the server a=20
carte blanche as to how much of the initial data it buffers while=20
waiting for the client to authenticate. (It still must read all of it=20
from the TCP stream before getting to the part where the client proves=20
its credentials.) Were it not for the authentication phase, these fields=20
would indeed be useless.
> - Does it make sense to keep sending the version number over the wire?
> Proxy protocols need to be provisioned out of band (e.g. SOCKS vs=20
> HTTP, port number)
> and there is no way for a SOCKSv5 server to reply "I don't speak SOCKSv=
6".
> I'm not sure I see the value of a minor version either, as there's=20
> still plenty of room
> for major versions 7-255.
>
I think version numbers still make sense. When presented with a SOCKSv6=20
request, a v5 proxy must at least know that the client is speaking some=20
other protocol. I will add a way for the proxy to signal that it doesn't=20
speak SOCKSv7+ in the next version of the draft. Version numbers in=20
operation replies don't make sense; I'll remove those. As for minor=20
versions, they might indeed be overkill, given that v6 is extensible via=20
options.
> - Instead of having a command code enum with 3 values and a TFO enum=20
> with 2 values,
> could we instead add a CONNECT_WITH_TFO command code to save a byte?
> We could even take that one step further and also merge in the address=20
> type enum.
>
This is certainly worth considering. Alternatively, we could use a bit=20
field: 2-3 bits for the command code, one bit for TFO, 2 for address=20
type etc. Otherwise, we might end up with too many command codes=20
(connect/bind x TFO x address type x whatever else we want to cram in).
> - One pain point I had when implementing SOCKSv5 was the fact that the=20
> port number
> was after the address which meant that it moved, would it make sense=20
> to place it before
> the variable length address field to simplify and optimize parsing?
>
I don't see why not.
> - Could we make the client supported auth methods optional?
> Since the client is sending tentative auth proposals as options, one=20
> could imagine
> making the list of supported auth methods an option, an treating it as=20
> "I only support
> no auth" when it's not there
>
I like this idea. A side effect of this approach is that we move another=20
variable-length field to the back of the request, further simplifying=20
parsing.
> - Out of curiosity, what specific use case are you using this protocol=20
> for?
>
We are looking into using MPTCP on mobile devices to "bind" 4G/LTE and=20
WiFi. Mobile data networks have high latency, hence the drive to shave=20
off as many RTTs as possible and to take advantage of TFO, at least on=20
the client-proxy leg.

Cheers,
Vlad

> Thanks,
> David Schinazi
>
>
>> On Jun 29, 2017, at 05:08, Vladimir Olteanu=20
>> <vladimir.olteanu@cs.pub.ro <mailto:vladimir.olteanu@cs.pub.ro>> wrote=
:
>>
>> Hello,
>>
>> We have submitted a draft describing a new version of the SOCKS=20
>> protocol. You can find the abstract and a link to the draft below.
>>
>> Best,
>> Vlad and Drago=C8=99
>>
>>
>>
>> -------- Forwarded Message --------
>> Subject: 	New Version Notification for=20
>> draft-olteanu-intarea-socks-6-00.txt
>> Date: 	Wed, 28 Jun 2017 22:01:16 -0700
>> From: 	internet-drafts@ietf.org
>> To: 	Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>, Dragos Niculescu=20
>> <dragos.niculescu@cs.pub.ro>
>>
>>
>>
>> A new version of I-D, draft-olteanu-intarea-socks-6-00.txt
>> has been successfully submitted by Vladimir Olteanu and posted to the
>> IETF repository.
>>
>> Name:		draft-olteanu-intarea-socks-6
>> Revision:	00
>> Title:		SOCKS Protocol Version 6
>> Document date:	2017-06-28
>> Group:		Individual Submission
>> Pages:		12
>> URL:https://www.ietf.org/internet-drafts/draft-olteanu-intarea-socks-6=
-00.txt
>> Status:https://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/
>> Htmlized:https://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00
>> Htmlized:https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-s=
ocks-6-00
>>
>>
>> Abstract:
>>     The SOCKS protocol is used primarily to proxy TCP connections to
>>     arbitrary destinations via the use of a proxy server.  Under the
>>     latest version of the protocol (version 5), it takes 2 RTTs (or 3,=
 if
>>     authentication is used) before data can flow between the client an=
d
>>     the server.
>>
>>     This memo proposes SOCKS version 6, which reduces the number of RT=
Ts
>>     used, takes full advantage of TCP Fast Open, and adds support for
>>     0-RTT authentication.
>>
>>                                                                       =
            =20
>>
>>
>> Please note that it may take a couple of minutes from the time of subm=
ission
>> until the htmlized version and diff are available attools.ietf.org <ht=
tp://tools.ietf.org>.
>>
>> The IETF Secretariat
>>
>


--------------12366D2363ACDA5A899F9E09
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable

<html>
  <head>
    <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf=
-8">
  </head>
  <body text=3D"#000000" bgcolor=3D"#FFFFFF">
    <p>Hey David,</p>
    <p>Thanks for the kind words. I'll address your questions inline:<br>
    </p>
    <div class=3D"moz-cite-prefix">On 6/29/2017 9:09 PM, David Schinazi
      wrote:<br>
    </div>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Du=
tf-8">
      Hi Vladimir,
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">Thanks for writing this up, I agree SOCKS needs to
        be modernized and I think your draft</div>
      <div class=3D"">has a lot of good ideas. A few questions:</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">- Why do you mimic the TFO semantics so closely?</d=
iv>
      <div class=3D"">Since SOCKSv6 runs over TCP, I'm not sure I
        understand the meaning of the initial data offset.</div>
      <div class=3D"">The server can pull enough data for the upstream TC=
P
        SYN from its initial window</div>
      <div class=3D"">and leave the rest of the SOCKSv6 initial data ther=
e
        for later, instead of resending it twice.</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    The main idea is to let the client send some data before running the
    authentication protocol. The initial data offset gives the server a
    carte blanche as to how much of the initial data it buffers while
    waiting for the client to authenticate. (It still must read all of
    it from the TCP stream before getting to the part where the client
    proves its credentials.) Were it not for the authentication phase,
    these fields would indeed be useless.<br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">- Does it make sense to keep sending the version
        number over the wire?</div>
      <div class=3D"">Proxy protocols need to be provisioned out of band
        (e.g. SOCKS vs HTTP, port number)</div>
      <div class=3D"">and there is no way for a SOCKSv5 server to reply "=
I
        don't speak SOCKSv6".</div>
      <div class=3D"">I'm not sure I see the value of a minor version
        either, as there's still plenty of room</div>
      <div class=3D"">for major versions 7-255.</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    I think version numbers still make sense. When presented with a
    SOCKSv6 request, a v5 proxy must at least know that the client is
    speaking some other protocol. I will add a way for the proxy to
    signal that it doesn't speak SOCKSv7+ in the next version of the
    draft. Version numbers in operation replies don't make sense; I'll
    remove those. As for minor versions, they might indeed be overkill,
    given that v6 is extensible via options.<br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">- Instead of having a command code enum with 3
        values and a TFO enum with 2 values,</div>
      <div class=3D"">could we instead add a CONNECT_WITH_TFO command cod=
e
        to save a byte?</div>
      <div class=3D"">We could even take that one step further and also
        merge in the address type enum.</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    This is certainly worth considering. Alternatively, we could use a
    bit field: 2-3 bits for the command code, one bit for TFO, 2 for
    address type etc. Otherwise, we might end up with too many command
    codes (connect/bind x TFO x address type x whatever else we want to
    cram in). <br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">- One pain point I had when implementing SOCKSv5 wa=
s
        the fact that the port number</div>
      <div class=3D"">was after the address which meant that it moved,
        would it make sense to place it before</div>
      <div class=3D"">the variable length address field to simplify and
        optimize parsing?</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    I don't see why not.<br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">- Could we make the client supported auth methods
        optional?</div>
      <div class=3D"">Since the client is sending tentative auth proposal=
s
        as options, one could imagine</div>
      <div class=3D"">making the list of supported auth methods an option=
,
        an treating it as "I only support</div>
      <div class=3D"">no auth" when it's not there</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    I like this idea. A side effect of this approach is that we move
    another variable-length field to the back of the request, further
    simplifying parsing.<br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">- Out of curiosity, what specific use case are you
        using this protocol for?</div>
      <div class=3D""><br class=3D"">
      </div>
    </blockquote>
    We are looking into using MPTCP on mobile devices to "bind" 4G/LTE
    and WiFi. Mobile data networks have high latency, hence the drive to
    shave off as many RTTs as possible and to take advantage of TFO, at
    least on the client-proxy leg.<br>
    <br>
    Cheers,<br>
    Vlad<br>
    <br>
    <blockquote type=3D"cite"
      cite=3D"mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com">
      <div class=3D"">Thanks,</div>
      <div class=3D"">David Schinazi</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D""><br class=3D"">
        <div>
          <blockquote type=3D"cite" class=3D"">
            <div class=3D"">On Jun 29, 2017, at 05:08, Vladimir Olteanu
              &lt;<a href=3D"mailto:vladimir.olteanu@cs.pub.ro" class=3D"=
"
                moz-do-not-send=3D"true">vladimir.olteanu@cs.pub.ro</a>&g=
t;
              wrote:</div>
            <br class=3D"Apple-interchange-newline">
            <div class=3D"">
              <meta http-equiv=3D"content-type" content=3D"text/html;
                charset=3Dutf-8" class=3D"">
              <div text=3D"#000000" bgcolor=3D"#FFFFFF" class=3D"">
                <p class=3D""> Hello,<br class=3D"">
                  <br class=3D"">
                  We have submitted a draft describing a new version of
                  the SOCKS protocol. You can find the abstract and a
                  link to the draft below.<br class=3D"">
                  <br class=3D"">
                  Best,<br class=3D"">
                  Vlad and Drago=C8=99</p>
                <div class=3D"moz-forward-container"><br class=3D"">
                  <br class=3D"">
                  -------- Forwarded Message --------
                  <table class=3D"moz-email-headers-table" cellspacing=3D=
"0"
                    cellpadding=3D"0" border=3D"0">
                    <tbody class=3D"">
                      <tr class=3D"">
                        <th class=3D"" nowrap=3D"nowrap" valign=3D"BASELI=
NE"
                          align=3D"RIGHT">Subject: </th>
                        <td class=3D"">New Version Notification for
                          draft-olteanu-intarea-socks-6-00.txt</td>
                      </tr>
                      <tr class=3D"">
                        <th class=3D"" nowrap=3D"nowrap" valign=3D"BASELI=
NE"
                          align=3D"RIGHT">Date: </th>
                        <td class=3D"">Wed, 28 Jun 2017 22:01:16 -0700</t=
d>
                      </tr>
                      <tr class=3D"">
                        <th class=3D"" nowrap=3D"nowrap" valign=3D"BASELI=
NE"
                          align=3D"RIGHT">From: </th>
                        <td class=3D""><a class=3D"moz-txt-link-abbreviat=
ed"
                            href=3D"mailto:internet-drafts@ietf.org"
                            moz-do-not-send=3D"true">internet-drafts@ietf=
.org</a></td>
                      </tr>
                      <tr class=3D"">
                        <th class=3D"" nowrap=3D"nowrap" valign=3D"BASELI=
NE"
                          align=3D"RIGHT">To: </th>
                        <td class=3D"">Vladimir Olteanu <a
                            class=3D"moz-txt-link-rfc2396E"
                            href=3D"mailto:vladimir.olteanu@cs.pub.ro"
                            moz-do-not-send=3D"true">&lt;vladimir.olteanu=
@cs.pub.ro&gt;</a>,
                          Dragos Niculescu <a
                            class=3D"moz-txt-link-rfc2396E"
                            href=3D"mailto:dragos.niculescu@cs.pub.ro"
                            moz-do-not-send=3D"true">&lt;dragos.niculescu=
@cs.pub.ro&gt;</a></td>
                      </tr>
                    </tbody>
                  </table>
                  <br class=3D"">
                  <br class=3D"">
                  <pre class=3D"">A new version of I-D, draft-olteanu-int=
area-socks-6-00.txt
has been successfully submitted by Vladimir Olteanu and posted to the
IETF repository.

Name:		draft-olteanu-intarea-socks-6
Revision:	00
Title:		SOCKS Protocol Version 6
Document date:	2017-06-28
Group:		Individual Submission
Pages:		12
URL:            <a class=3D"moz-txt-link-freetext" href=3D"https://www.ie=
tf.org/internet-drafts/draft-olteanu-intarea-socks-6-00.txt" moz-do-not-s=
end=3D"true">https://www.ietf.org/internet-drafts/draft-olteanu-intarea-s=
ocks-6-00.txt</a>
Status:         <a class=3D"moz-txt-link-freetext" href=3D"https://datatr=
acker.ietf.org/doc/draft-olteanu-intarea-socks-6/" moz-do-not-send=3D"tru=
e">https://datatracker.ietf.org/doc/draft-olteanu-intarea-socks-6/</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" href=3D"https://tools.=
ietf.org/html/draft-olteanu-intarea-socks-6-00" moz-do-not-send=3D"true">=
https://tools.ietf.org/html/draft-olteanu-intarea-socks-6-00</a>
Htmlized:       <a class=3D"moz-txt-link-freetext" href=3D"https://datatr=
acker.ietf.org/doc/html/draft-olteanu-intarea-socks-6-00" moz-do-not-send=
=3D"true">https://datatracker.ietf.org/doc/html/draft-olteanu-intarea-soc=
ks-6-00</a>


Abstract:
   The SOCKS protocol is used primarily to proxy TCP connections to
   arbitrary destinations via the use of a proxy server.  Under the
   latest version of the protocol (version 5), it takes 2 RTTs (or 3, if
   authentication is used) before data can flow between the client and
   the server.

   This memo proposes SOCKS version 6, which reduces the number of RTTs
   used, takes full advantage of TCP Fast Open, and adds support for
   0-RTT authentication.

                                                                         =
        =20


Please note that it may take a couple of minutes from the time of submiss=
ion
until the htmlized version and diff are available at <a href=3D"http://to=
ols.ietf.org" class=3D"" moz-do-not-send=3D"true">tools.ietf.org</a>.

The IETF Secretariat

</pre>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br class=3D"">
      </div>
    </blockquote>
    <br>
  </body>
</html>

--------------12366D2363ACDA5A899F9E09--


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Hi Vlad,

Responses inline.

> On Jun 30, 2017, at 06:56, Vladimir Olteanu <vladimir.olteanu@cs.pub.ro> wrote:
> 
> Hey David,
> 
> Thanks for the kind words. I'll address your questions inline:
> On 6/29/2017 9:09 PM, David Schinazi wrote:
>> Hi Vladimir,
>> 
>> Thanks for writing this up, I agree SOCKS needs to be modernized and I think your draft
>> has a lot of good ideas. A few questions:
>> 
>> - Why do you mimic the TFO semantics so closely?
>> Since SOCKSv6 runs over TCP, I'm not sure I understand the meaning of the initial data offset.
>> The server can pull enough data for the upstream TCP SYN from its initial window
>> and leave the rest of the SOCKSv6 initial data there for later, instead of resending it twice.
>> 
> The main idea is to let the client send some data before running the authentication protocol. The initial data offset gives the server a carte blanche as to how much of the initial data it buffers while waiting for the client to authenticate. (It still must read all of it from the TCP stream before getting to the part where the client proves its credentials.) Were it not for the authentication phase, these fields would indeed be useless.

[DS] That makes more sense, thanks!
What's the benefit of sending the idempotent data before auth? The proxy's not going to send it out
until it has received the last client -> proxy auth message so we may as well send the data right after that?
(That said I'm not very familiar with GSSAPI or the non-standard auth methods 3-8 so I could be missing something)

>> - Does it make sense to keep sending the version number over the wire?
>> Proxy protocols need to be provisioned out of band (e.g. SOCKS vs HTTP, port number)
>> and there is no way for a SOCKSv5 server to reply "I don't speak SOCKSv6".
>> I'm not sure I see the value of a minor version either, as there's still plenty of room
>> for major versions 7-255.
>> 
> I think version numbers still make sense. When presented with a SOCKSv6 request, a v5 proxy must at least know that the client is speaking some other protocol. I will add a way for the proxy to signal that it doesn't speak SOCKSv7+ in the next version of the draft. Version numbers in operation replies don't make sense; I'll remove those. As for minor versions, they might indeed be overkill, given that v6 is extensible via options.

[DS] Wouldn't it be simpler to have IANA allocate a new port number though?
One byte isn't a huge win but it does make implementations simpler.

>> - Instead of having a command code enum with 3 values and a TFO enum with 2 values,
>> could we instead add a CONNECT_WITH_TFO command code to save a byte?
>> We could even take that one step further and also merge in the address type enum.
>> 
> This is certainly worth considering. Alternatively, we could use a bit field: 2-3 bits for the command code, one bit for TFO, 2 for address type etc. Otherwise, we might end up with too many command codes (connect/bind x TFO x address type x whatever else we want to cram in). 

[DS] A bit field can be very useful, but not when some combinations are not allowed.
For example having both TFO and UDP does not make sense. It does make sense for
TCP/UDP/TFO vs IPv4/IPv6/hostname though.

>> - One pain point I had when implementing SOCKSv5 was the fact that the port number
>> was after the address which meant that it moved, would it make sense to place it before
>> the variable length address field to simplify and optimize parsing?
>> 
> I don't see why not.
>> - Could we make the client supported auth methods optional?
>> Since the client is sending tentative auth proposals as options, one could imagine
>> making the list of supported auth methods an option, an treating it as "I only support
>> no auth" when it's not there
>> 
> I like this idea. A side effect of this approach is that we move another variable-length field to the back of the request, further simplifying parsing.
>> - Out of curiosity, what specific use case are you using this protocol for?
>> 
> We are looking into using MPTCP on mobile devices to "bind" 4G/LTE and WiFi. Mobile data networks have high latency, hence the drive to shave off as many RTTs as possible and to take advantage of TFO, at least on the client-proxy leg.

Thanks! This is cool work.

David Schinazi

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<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Hi Vlad,</div><div class=""><br class=""></div><div class="">Responses inline.</div><br class=""><div><blockquote type="cite" class=""><div class="">On Jun 30, 2017, at 06:56, Vladimir Olteanu &lt;<a href="mailto:vladimir.olteanu@cs.pub.ro" class="">vladimir.olteanu@cs.pub.ro</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class="">
  
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" class="">
  
  <div text="#000000" bgcolor="#FFFFFF" class=""><p class="">Hey David,</p><p class="">Thanks for the kind words. I'll address your questions inline:<br class="">
    </p>
    <div class="moz-cite-prefix">On 6/29/2017 9:09 PM, David Schinazi
      wrote:<br class="">
    </div>
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8" class="">
      Hi Vladimir,
      <div class=""><br class="">
      </div>
      <div class="">Thanks for writing this up, I agree SOCKS needs to
        be modernized and I think your draft</div>
      <div class="">has a lot of good ideas. A few questions:</div>
      <div class=""><br class="">
      </div>
      <div class="">- Why do you mimic the TFO semantics so closely?</div>
      <div class="">Since SOCKSv6 runs over TCP, I'm not sure I
        understand the meaning of the initial data offset.</div>
      <div class="">The server can pull enough data for the upstream TCP
        SYN from its initial window</div>
      <div class="">and leave the rest of the SOCKSv6 initial data there
        for later, instead of resending it twice.</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    The main idea is to let the client send some data before running the
    authentication protocol. The initial data offset gives the server a
    carte blanche as to how much of the initial data it buffers while
    waiting for the client to authenticate. (It still must read all of
    it from the TCP stream before getting to the part where the client
    proves its credentials.) Were it not for the authentication phase,
    these fields would indeed be useless.<br class=""></div></div></blockquote><div><br class=""></div><div>[DS] That makes more sense, thanks!</div><div>What's the benefit of sending the idempotent data before auth? The proxy's not going to send it out</div><div>until it has received the last client -&gt; proxy auth message so we may as well send the data right after that?</div><div>(That said I'm not very familiar with GSSAPI or the non-standard auth methods 3-8 so I could be missing something)</div><br class=""><blockquote type="cite" class=""><div class=""><div text="#000000" bgcolor="#FFFFFF" class="">
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <div class="">- Does it make sense to keep sending the version
        number over the wire?</div>
      <div class="">Proxy protocols need to be provisioned out of band
        (e.g. SOCKS vs HTTP, port number)</div>
      <div class="">and there is no way for a SOCKSv5 server to reply "I
        don't speak SOCKSv6".</div>
      <div class="">I'm not sure I see the value of a minor version
        either, as there's still plenty of room</div>
      <div class="">for major versions 7-255.</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    I think version numbers still make sense. When presented with a
    SOCKSv6 request, a v5 proxy must at least know that the client is
    speaking some other protocol. I will add a way for the proxy to
    signal that it doesn't speak SOCKSv7+ in the next version of the
    draft. Version numbers in operation replies don't make sense; I'll
    remove those. As for minor versions, they might indeed be overkill,
    given that v6 is extensible via options.<br class=""></div></div></blockquote><div><br class=""></div><div>[DS] Wouldn't it be simpler to have IANA allocate a new port number though?</div><div>One byte isn't a huge win but it does make implementations simpler.</div><br class=""><blockquote type="cite" class=""><div class=""><div text="#000000" bgcolor="#FFFFFF" class="">
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <div class="">- Instead of having a command code enum with 3
        values and a TFO enum with 2 values,</div>
      <div class="">could we instead add a CONNECT_WITH_TFO command code
        to save a byte?</div>
      <div class="">We could even take that one step further and also
        merge in the address type enum.</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    This is certainly worth considering. Alternatively, we could use a
    bit field: 2-3 bits for the command code, one bit for TFO, 2 for
    address type etc. Otherwise, we might end up with too many command
    codes (connect/bind x TFO x address type x whatever else we want to
    cram in). <br class=""></div></div></blockquote><div><br class=""></div><div>[DS] A bit field can be very useful, but not when some combinations are not allowed.</div><div>For example having both TFO and UDP does not make sense. It does make sense for</div><div>TCP/UDP/TFO vs IPv4/IPv6/hostname though.</div><br class=""><blockquote type="cite" class=""><div class=""><div text="#000000" bgcolor="#FFFFFF" class="">
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <div class="">- One pain point I had when implementing SOCKSv5 was
        the fact that the port number</div>
      <div class="">was after the address which meant that it moved,
        would it make sense to place it before</div>
      <div class="">the variable length address field to simplify and
        optimize parsing?</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    I don't see why not.<br class="">
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <div class="">- Could we make the client supported auth methods
        optional?</div>
      <div class="">Since the client is sending tentative auth proposals
        as options, one could imagine</div>
      <div class="">making the list of supported auth methods an option,
        an treating it as "I only support</div>
      <div class="">no auth" when it's not there</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    I like this idea. A side effect of this approach is that we move
    another variable-length field to the back of the request, further
    simplifying parsing.<br class="">
    <blockquote type="cite" cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com" class="">
      <div class="">- Out of curiosity, what specific use case are you
        using this protocol for?</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    We are looking into using MPTCP on mobile devices to "bind" 4G/LTE
    and WiFi. Mobile data networks have high latency, hence the drive to
    shave off as many RTTs as possible and to take advantage of TFO, at
    least on the client-proxy leg.<br class=""></div></div></blockquote><div><br class=""></div><div>Thanks! This is cool work.</div><div><br class=""></div><div>David Schinazi</div></div></body></html>

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To: David Schinazi <dschinazi@apple.com>
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From: Vladimir Olteanu <vladimir.olteanu@cs.pub.ro>
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Hi David,

I've also inlined my responses.


On 06/30/2017 09:08 PM, David Schinazi wrote:
> Hi Vlad,
>
> Responses inline.
>
>> On Jun 30, 2017, at 06:56, Vladimir Olteanu 
>> <vladimir.olteanu@cs.pub.ro <mailto:vladimir.olteanu@cs.pub.ro>> wrote:
>>
>> Hey David,
>>
>> Thanks for the kind words. I'll address your questions inline:
>>
>> On 6/29/2017 9:09 PM, David Schinazi wrote:
>>> Hi Vladimir,
>>>
>>> Thanks for writing this up, I agree SOCKS needs to be modernized and 
>>> I think your draft
>>> has a lot of good ideas. A few questions:
>>>
>>> - Why do you mimic the TFO semantics so closely?
>>> Since SOCKSv6 runs over TCP, I'm not sure I understand the meaning 
>>> of the initial data offset.
>>> The server can pull enough data for the upstream TCP SYN from its 
>>> initial window
>>> and leave the rest of the SOCKSv6 initial data there for later, 
>>> instead of resending it twice.
>>>
>> The main idea is to let the client send some data before running the 
>> authentication protocol. The initial data offset gives the server a 
>> carte blanche as to how much of the initial data it buffers while 
>> waiting for the client to authenticate. (It still must read all of it 
>> from the TCP stream before getting to the part where the client 
>> proves its credentials.) Were it not for the authentication phase, 
>> these fields would indeed be useless.
>
> [DS] That makes more sense, thanks!
> What's the benefit of sending the idempotent data before auth? The 
> proxy's not going to send it out
> until it has received the last client -> proxy auth message so we may 
> as well send the data right after that?
> (That said I'm not very familiar with GSSAPI or the non-standard auth 
> methods 3-8 so I could be missing something)
>
The core issue is that the client can start sending regular data only 
when it is sure that the server won't ask for more authentication 
information. If 0-RTT authentication is successful, the proxy can open 
the socket right after the request, but the client has to wait 1 RTT 
before finding out if it must go through the slow authentication process 
or not.
>>> - Does it make sense to keep sending the version number over the wire?
>>> Proxy protocols need to be provisioned out of band (e.g. SOCKS vs 
>>> HTTP, port number)
>>> and there is no way for a SOCKSv5 server to reply "I don't speak 
>>> SOCKSv6".
>>> I'm not sure I see the value of a minor version either, as there's 
>>> still plenty of room
>>> for major versions 7-255.
>>>
>> I think version numbers still make sense. When presented with a 
>> SOCKSv6 request, a v5 proxy must at least know that the client is 
>> speaking some other protocol. I will add a way for the proxy to 
>> signal that it doesn't speak SOCKSv7+ in the next version of the 
>> draft. Version numbers in operation replies don't make sense; I'll 
>> remove those. As for minor versions, they might indeed be overkill, 
>> given that v6 is extensible via options.
>
> [DS] Wouldn't it be simpler to have IANA allocate a new port number 
> though?
> One byte isn't a huge win but it does make implementations simpler.
>
The version byte helps with misconfiguration issues. Imagine what would 
happen if the client and the proxy were to speak different versions 
without either of them realizing. As for the amendment to the draft, it 
won't really complicate matters. It will consist of the proxy saying 
"but I speak version 6" and the client closing the connection.
>>> - Instead of having a command code enum with 3 values and a TFO enum 
>>> with 2 values,
>>> could we instead add a CONNECT_WITH_TFO command code to save a byte?
>>> We could even take that one step further and also merge in the 
>>> address type enum.
>>>
>> This is certainly worth considering. Alternatively, we could use a 
>> bit field: 2-3 bits for the command code, one bit for TFO, 2 for 
>> address type etc. Otherwise, we might end up with too many command 
>> codes (connect/bind x TFO x address type x whatever else we want to 
>> cram in).
>
> [DS] A bit field can be very useful, but not when some combinations 
> are not allowed.
> For example having both TFO and UDP does not make sense. It does make 
> sense for
> TCP/UDP/TFO vs IPv4/IPv6/hostname though.
>
I don't really see a problem with invalid bit group combinations. There 
are other field combinations that also don't make sense (e.g. UDP and 
initial data > 0).
>>> - One pain point I had when implementing SOCKSv5 was the fact that 
>>> the port number
>>> was after the address which meant that it moved, would it make sense 
>>> to place it before
>>> the variable length address field to simplify and optimize parsing?
>>>
>> I don't see why not.
>>> - Could we make the client supported auth methods optional?
>>> Since the client is sending tentative auth proposals as options, one 
>>> could imagine
>>> making the list of supported auth methods an option, an treating it 
>>> as "I only support
>>> no auth" when it's not there
>>>
>> I like this idea. A side effect of this approach is that we move 
>> another variable-length field to the back of the request, further 
>> simplifying parsing.
>>> - Out of curiosity, what specific use case are you using this 
>>> protocol for?
>>>
>> We are looking into using MPTCP on mobile devices to "bind" 4G/LTE 
>> and WiFi. Mobile data networks have high latency, hence the drive to 
>> shave off as many RTTs as possible and to take advantage of TFO, at 
>> least on the client-proxy leg.
>
Cheers,
Vlad

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    <p>Hi David,</p>
    <p>I've also inlined my responses.<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 06/30/2017 09:08 PM, David Schinazi
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:AE3FC07A-DE86-4765-9D1F-00640942B4E4@apple.com">
      <meta http-equiv="Content-Type" content="text/html;
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      <div class="">Hi Vlad,</div>
      <div class=""><br class="">
      </div>
      <div class="">Responses inline.</div>
      <br class="">
      <div>
        <blockquote type="cite" class="">
          <div class="">On Jun 30, 2017, at 06:56, Vladimir Olteanu &lt;<a
              href="mailto:vladimir.olteanu@cs.pub.ro" class=""
              moz-do-not-send="true">vladimir.olteanu@cs.pub.ro</a>&gt;
            wrote:</div>
          <br class="Apple-interchange-newline">
          <div class="">
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            <div text="#000000" bgcolor="#FFFFFF" class="">
              <p class="">Hey David,</p>
              <p class="">Thanks for the kind words. I'll address your
                questions inline:<br class="">
              </p>
              <div class="moz-cite-prefix">On 6/29/2017 9:09 PM, David
                Schinazi wrote:<br class="">
              </div>
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <meta http-equiv="Content-Type" content="text/html;
                  charset=windows-1252" class="">
                Hi Vladimir,
                <div class=""><br class="">
                </div>
                <div class="">Thanks for writing this up, I agree SOCKS
                  needs to be modernized and I think your draft</div>
                <div class="">has a lot of good ideas. A few questions:</div>
                <div class=""><br class="">
                </div>
                <div class="">- Why do you mimic the TFO semantics so
                  closely?</div>
                <div class="">Since SOCKSv6 runs over TCP, I'm not sure
                  I understand the meaning of the initial data offset.</div>
                <div class="">The server can pull enough data for the
                  upstream TCP SYN from its initial window</div>
                <div class="">and leave the rest of the SOCKSv6 initial
                  data there for later, instead of resending it twice.</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              The main idea is to let the client send some data before
              running the authentication protocol. The initial data
              offset gives the server a carte blanche as to how much of
              the initial data it buffers while waiting for the client
              to authenticate. (It still must read all of it from the
              TCP stream before getting to the part where the client
              proves its credentials.) Were it not for the
              authentication phase, these fields would indeed be
              useless.<br class="">
            </div>
          </div>
        </blockquote>
        <div><br class="">
        </div>
        <div>[DS] That makes more sense, thanks!</div>
        <div>What's the benefit of sending the idempotent data before
          auth? The proxy's not going to send it out</div>
        <div>until it has received the last client -&gt; proxy auth
          message so we may as well send the data right after that?</div>
        <div>(That said I'm not very familiar with GSSAPI or the
          non-standard auth methods 3-8 so I could be missing something)</div>
        <br class="">
      </div>
    </blockquote>
    The core issue is that the client can start sending regular data
    only when it is sure that the server won't ask for more
    authentication information. If 0-RTT authentication is successful,
    the proxy can open the socket right after the request, but the
    client has to wait 1 RTT before finding out if it must go through
    the slow authentication process or not.<br>
    <blockquote type="cite"
      cite="mid:AE3FC07A-DE86-4765-9D1F-00640942B4E4@apple.com">
      <div>
        <blockquote type="cite" class="">
          <div class="">
            <div text="#000000" bgcolor="#FFFFFF" class="">
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <div class="">- Does it make sense to keep sending the
                  version number over the wire?</div>
                <div class="">Proxy protocols need to be provisioned out
                  of band (e.g. SOCKS vs HTTP, port number)</div>
                <div class="">and there is no way for a SOCKSv5 server
                  to reply "I don't speak SOCKSv6".</div>
                <div class="">I'm not sure I see the value of a minor
                  version either, as there's still plenty of room</div>
                <div class="">for major versions 7-255.</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              I think version numbers still make sense. When presented
              with a SOCKSv6 request, a v5 proxy must at least know that
              the client is speaking some other protocol. I will add a
              way for the proxy to signal that it doesn't speak SOCKSv7+
              in the next version of the draft. Version numbers in
              operation replies don't make sense; I'll remove those. As
              for minor versions, they might indeed be overkill, given
              that v6 is extensible via options.<br class="">
            </div>
          </div>
        </blockquote>
        <div><br class="">
        </div>
        <div>[DS] Wouldn't it be simpler to have IANA allocate a new
          port number though?</div>
        <div>One byte isn't a huge win but it does make implementations
          simpler.</div>
        <br class="">
      </div>
    </blockquote>
    The version byte helps with misconfiguration issues. Imagine what
    would happen if the client and the proxy were to speak different
    versions without either of them realizing. As for the amendment to
    the draft, it won't really complicate matters. It will consist of
    the proxy saying "but I speak version 6" and the client closing the
    connection.<br>
    <blockquote type="cite"
      cite="mid:AE3FC07A-DE86-4765-9D1F-00640942B4E4@apple.com">
      <div>
        <blockquote type="cite" class="">
          <div class="">
            <div text="#000000" bgcolor="#FFFFFF" class="">
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <div class="">- Instead of having a command code enum
                  with 3 values and a TFO enum with 2 values,</div>
                <div class="">could we instead add a CONNECT_WITH_TFO
                  command code to save a byte?</div>
                <div class="">We could even take that one step further
                  and also merge in the address type enum.</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              This is certainly worth considering. Alternatively, we
              could use a bit field: 2-3 bits for the command code, one
              bit for TFO, 2 for address type etc. Otherwise, we might
              end up with too many command codes (connect/bind x TFO x
              address type x whatever else we want to cram in). <br
                class="">
            </div>
          </div>
        </blockquote>
        <div><br class="">
        </div>
        <div>[DS] A bit field can be very useful, but not when some
          combinations are not allowed.</div>
        <div>For example having both TFO and UDP does not make sense. It
          does make sense for</div>
        <div>TCP/UDP/TFO vs IPv4/IPv6/hostname though.</div>
        <br class="">
      </div>
    </blockquote>
    I don't really see a problem with invalid bit group combinations.
    There are other field combinations that also don't make sense (e.g.
    UDP and initial data &gt; 0).<br>
    <blockquote type="cite"
      cite="mid:AE3FC07A-DE86-4765-9D1F-00640942B4E4@apple.com">
      <div>
        <blockquote type="cite" class="">
          <div class="">
            <div text="#000000" bgcolor="#FFFFFF" class="">
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <div class="">- One pain point I had when implementing
                  SOCKSv5 was the fact that the port number</div>
                <div class="">was after the address which meant that it
                  moved, would it make sense to place it before</div>
                <div class="">the variable length address field to
                  simplify and optimize parsing?</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              I don't see why not.<br class="">
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <div class="">- Could we make the client supported auth
                  methods optional?</div>
                <div class="">Since the client is sending tentative auth
                  proposals as options, one could imagine</div>
                <div class="">making the list of supported auth methods
                  an option, an treating it as "I only support</div>
                <div class="">no auth" when it's not there</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              I like this idea. A side effect of this approach is that
              we move another variable-length field to the back of the
              request, further simplifying parsing.<br class="">
              <blockquote type="cite"
                cite="mid:F42011E7-0F81-44DF-9DFC-A211B615DD33@apple.com"
                class="">
                <div class="">- Out of curiosity, what specific use case
                  are you using this protocol for?</div>
                <div class=""><br class="">
                </div>
              </blockquote>
              We are looking into using MPTCP on mobile devices to
              "bind" 4G/LTE and WiFi. Mobile data networks have high
              latency, hence the drive to shave off as many RTTs as
              possible and to take advantage of TFO, at least on the
              client-proxy leg.<br class="">
            </div>
          </div>
        </blockquote>
        <div><br class="">
        </div>
      </div>
    </blockquote>
    Cheers,<br>
    Vlad<br>
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