
From denghui02@hotmail.com  Thu Sep  6 17:34:03 2012
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Subject: [mif] FW: Help the NomCom: Nominations and Feedback
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Please help
 > From: nomcom-chair@ietf.org
> To: wgchairs@ietf.org
> Subject: Help the NomCom: Nominations and Feedback
> Date: Wed, 5 Sep 2012 17:21:29 -0700
> 
> The IETF Nominations Committee (NomCom) is currently seeking 
> nominations for individuals to serve on the IESG, IAB, and IAOC. 
> Additionally, this is an announcement that the NomCom is seeking 
> feedback on individuals who have accepted nominations for IETF 
> leadership positions. 
> 
> It is very important to the NomCom process that we get input from a 
> broad spectrum of the community. Therefore, in case members of your 
> working group do not read the IETF announcement and discussion lists, 
> the NomCom would appreciate your help in disseminating the following 
> information.
> 
> The NomCom website contains information about this year's NomCom 
> including the positions we are seeking to fill, and the qualifications 
> required for these positions:
> 
> https://www.ietf.org/group/nomcom/2012/
> 
> The NomCom is accepting nominations until September 24. Nominations 
> for any position can be made using the following web tool:
> 
> https://www.ietf.org/group/nomcom/2012/nominate
> 
> Feedback about individuals who the NomCom is considering can be 
> providing using the following web tool:
> 
> https://www.ietf.org/group/nomcom/2012/input
> 
> The feedback tool provides a list of individuals who have agreed to be 
> considered for each position. We will be updating this list in the coming 
> weeks as more individuals accept nominations.
> 
> Feedback provided to the NomCom is kept strictly confidential!
> 
> Note that use of the NomCom web tools require an ietf.org (i.e.,
> datatracker) account. You can create an ietf.org account by visiting the
> following URL:
> 
> https://datatracker.ietf.org/accounts/create/
> 
> As an alternative to using the web tools,  you can send email to the
> NomCom at nomcom12@ietf.org to make a nomination or provide input to
> the committee.
> 
> Thank you for your help,
> - Matt Lepinski
>   nomcom-chair@ietf.org
 		 	   		  
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Please help<br>&nbsp;<BR><div><div id="SkyDrivePlaceholder"></div>&gt; From: nomcom-chair@ietf.org<br>&gt; To: wgchairs@ietf.org<br>&gt; Subject: Help the NomCom: Nominations and Feedback<br>&gt; Date: Wed, 5 Sep 2012 17:21:29 -0700<br>&gt; <br>&gt; The IETF Nominations Committee (NomCom) is currently seeking <br>&gt; nominations for individuals to serve on the IESG, IAB, and IAOC. <br>&gt; Additionally, this is an announcement that the NomCom is seeking <br>&gt; feedback on individuals who have accepted nominations for IETF <br>&gt; leadership positions. <br>&gt; <br>&gt; It is very important to the NomCom process that we get input from a <br>&gt; broad spectrum of the community. Therefore, in case members of your <br>&gt; working group do not read the IETF announcement and discussion lists, <br>&gt; the NomCom would appreciate your help in disseminating the following <br>&gt; information.<br>&gt; <br>&gt; The NomCom website contains information about this year's NomCom <br>
 &gt; including the positions we are seeking to fill, and the qualifications <br>&gt; required for these positions:<br>&gt; <br>&gt; https://www.ietf.org/group/nomcom/2012/<br>&gt; <br>&gt; The NomCom is accepting nominations until September 24. Nominations <br>&gt; for any position can be made using the following web tool:<br>&gt; <br>&gt; https://www.ietf.org/group/nomcom/2012/nominate<br>&gt; <br>&gt; Feedback about individuals who the NomCom is considering can be <br>&gt; providing using the following web tool:<br>&gt; <br>&gt; https://www.ietf.org/group/nomcom/2012/input<br>&gt; <br>&gt; The feedback tool provides a list of individuals who have agreed to be <br>&gt; considered for each position. We will be updating this list in the coming <br>&gt; weeks as more individuals accept nominations.<br>&gt; <br>&gt; Feedback provided to the NomCom is kept strictly confidential!<br>&gt; <br>&gt; Note that use of the NomCom web tools require an ietf.org (i.e.,<br>&gt; datatracker
 ) account. You can create an ietf.org account by visiting the<br>&gt; following URL:<br>&gt; <br>&gt; https://datatracker.ietf.org/accounts/create/<br>&gt; <br>&gt; As an alternative to using the web tools,  you can send email to the<br>&gt; NomCom at nomcom12@ietf.org to make a nomination or provide input to<br>&gt; the committee.<br>&gt; <br>&gt; Thank you for your help,<br>&gt; - Matt Lepinski<br>&gt;   nomcom-chair@ietf.org<br></div> 		 	   		  </div></body>
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From alexandru.petrescu@gmail.com  Thu Sep 20 02:35:35 2012
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Date: Thu, 20 Sep 2012 11:35:32 +0200
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Subject: [mif] Announcing DRLO v2 draft-mouton-mif-dhcpv6-drlo-02.txt
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Hello participants to MIF WG,

We have just posted a new version of draft-mouton-mif-dhcpv6-drlo-02.txt:

http://tools.ietf.org/html/draft-mouton-mif-dhcpv6-drlo-02

There are several changes:
- added three use-cases: large mobility network, Mi-Fi coverage
   extension and M2M constrained device.
- stressing its experimental characteristics, implementation.
- rephrasing abstract and other textual cleanup.
- expanded authorship.

I would like to ask for feedback - what do you think about this draft?

Thanks in advance,

Alex

> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
>
> Title           : Default Router List Option for DHCPv6 (DRLO)
> Author(s)       : Alexandru Petrescu Kostas Pentikousis Christophe
> Janneteau Maximilien Mouton Filename        :
> draft-mouton-mif-dhcpv6-drlo-02.txt Pages           : 17 Date
> : 2012-09-19
>
> Abstract: This document specifies an experimental DHCPv6 default
> route option which provisions static routing information to client
> nodes.  The option facilitates central configuration of a
> multi-access client node's default router list with the IPv6 address,
> MAC address, and lifetime of the route, which is preferred in certain
> multi-access network environments.  In addition, the DHCP option
> defined in this document can provide operational simplicity in
> network coverage extension scenarios using inexpensive (and limited
> resource) consumer-grade equipment.  Finally, the proposed DHCP
> option has been implemented and tested in practice; its experimental
> use points to benefits with respect to reduced signaling and energy
> consumption compared to existing default route configuration
> mechanisms.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-mouton-mif-dhcpv6-drlo
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-mouton-mif-dhcpv6-drlo-02
>
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-mouton-mif-dhcpv6-drlo-02
>
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/


From pierrick.seite@orange.com  Thu Sep 20 05:30:35 2012
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From: <pierrick.seite@orange.com>
To: "'mif@ietf.org'" <mif@ietf.org>
Thread-Topic: application of MIF API
Thread-Index: Ac2XK7l5cOKhMTb8Sf6zUwgyUwQUbg==
Date: Thu, 20 Sep 2012 12:30:32 +0000
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Hello,

We have posted a new document  dealing with the application of the MIF API.=
 This I-D is  a discussion paper trying to figure out how a connection mana=
ger may use the MIF API.  It must be clear that the goal is _not_  to speci=
fy a connection manager but to focus on the interface between the MIF API a=
nd the connection manager.  The draft also discusses the interaction betwee=
n the MIF API and the 802.21 MIH abstraction layer.=20

The URL is:  http://www.ietf.org/internet-drafts/draft-seite-mif-cm-00.txt=
=20

The goal of this draft  is only to illustrate the use of MIF API and, in -0=
0,  we made the choice to not change the MIF API. However, we think that th=
e MIF API should be the unique interface for manipulation of IP objects. If=
 we go in this direction, it would lead to introduce new messages for the M=
IF API (e.g. for routing configuration). So, this  I-D includes couple of d=
iscussion points on which we would like to have the feedback from the WG. Q=
uoting the main questions:

- Should the MIF API be the unique API for manipulation of IP object?
- If yes, should the MIF API be upgraded?

BR,
Pierrick and Juan-Carlos

___________________________________________________________________________=
______________________________________________

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From pierrick.seite@orange.com  Tue Sep 25 08:36:55 2012
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From: <pierrick.seite@orange.com>
To: 'Ted Lemon' <Ted.Lemon@nominum.com>, Dapeng Liu <liudapeng@chinamobile.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
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Cc: "'mif@ietf.org'" <mif@ietf.org>
Subject: [mif] questions on draft-ietf-mif-api-extension
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Hi Ted, Dapeng,

I have few questions about draft-ietf-mif-api-extension:

A subscriber can subscribe to configuration element and address announcemen=
ts (respectively sections 3.5.9 and 3.5.13); however a subscriber cannot un=
subscribe, i.e. neither "Stop announcing configuration element" nor "Stop a=
nnouncing address" are specified in the I-D. Is there a reason to this?

In sections 3.5.23.4 and 3.5.23.5: messages are "interface is going away" a=
nd "interface is going up". However, according to examples given (interface=
s switched on/off) these notification messages are sent when the interface =
is already down or up. So, I think "is going" is confusing here, maybe thes=
e messages should be "interface down" and "interface up", right?

What is the difference between notifications "interface is going down/up" (=
sections 3.5.23.4 and 3.5.23.5) and interface announcement/no interface ann=
ouncement in section  3.5.3 and 3.5.4? IMHO, the application subscribes to =
interface announcement and resulting announcements are the same as "interfa=
ce is going down/up", so I think there no need for specific messages 3.5.23=
.4 and 3.5.23.5.

We have a "get configuration data", shouldn't we have a "set configuration =
data" as well?

Br,
Pierrick

___________________________________________________________________________=
______________________________________________

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From Ted.Lemon@nominum.com  Tue Sep 25 08:54:15 2012
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From: Ted Lemon <Ted.Lemon@nominum.com>
To: "<pierrick.seite@orange.com> " <pierrick.seite@orange.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
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On Sep 25, 2012, at 11:36 AM, <pierrick.seite@orange.com>
 wrote:
> A subscriber can subscribe to configuration element and address announcem=
ents (respectively sections 3.5.9 and 3.5.13); however a subscriber cannot =
unsubscribe, i.e. neither "Stop announcing configuration element" nor "Stop=
 announcing address" are specified in the I-D. Is there a reason to this?

No, I think it's an oversight.

> In sections 3.5.23.4 and 3.5.23.5: messages are "interface is going away"=
 and "interface is going up". However, according to examples given (interfa=
ces switched on/off) these notification messages are sent when the interfac=
e is already down or up. So, I think "is going" is confusing here, maybe th=
ese messages should be "interface down" and "interface up", right?

This section needs work.   There actually should be a notification that the=
 interface is still up but that the system intends to take it down; there s=
hould be another when it is in fact down.

> What is the difference between notifications "interface is going down/up"=
 (sections 3.5.23.4 and 3.5.23.5) and interface announcement/no interface a=
nnouncement in section  3.5.3 and 3.5.4? IMHO, the application subscribes t=
o interface announcement and resulting announcements are the same as "inter=
face is going down/up", so I think there no need for specific messages 3.5.=
23.4 and 3.5.23.5.

Interface announce just announces the presence of an interface that may hav=
e identity associations.   Typically when an application starts, there will=
 already be a set of interfaces; as soon as the application subscribes to t=
he interface announcement message, it will get an announcement for each suc=
h interface.

> We have a "get configuration data", shouldn't we have a "set configuratio=
n data" as well?

No, I don't think so.   Configuration data comes from either on-host, stati=
c configuration, or from dynamic protocols like RA and DHCP.   What would b=
e the context for an application pushing configuration information up?   Th=
is just sounds like an attack vector to me=97a malicious app could capture =
traffic from another app by gaming the configuration settings.=

From pierrick.seite@orange.com  Wed Sep 26 01:27:25 2012
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From: <pierrick.seite@orange.com>
To: 'Ted Lemon' <Ted.Lemon@nominum.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
Thread-Index: Ac2bM5TwhUnJUqgWSJuSLlTzTedzbwAPRX+AABF870A=
Date: Wed, 26 Sep 2012 08:27:22 +0000
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Subject: Re: [mif] questions on draft-ietf-mif-api-extension
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Hi Ted,

Thanks for super fast answer :-) please see inline for comments.

Pierrick
> -----Message d'origine-----
> De=A0: Ted Lemon [mailto:Ted.Lemon@nominum.com]
> Envoy=E9=A0: mardi 25 septembre 2012 17:54
> =C0=A0: SEITE Pierrick RD-RESA
> Cc=A0: Dapeng Liu; mif@ietf.org
> Objet=A0: Re: questions on draft-ietf-mif-api-extension
>=20
> On Sep 25, 2012, at 11:36 AM, <pierrick.seite@orange.com>
>  wrote:
> > A subscriber can subscribe to configuration element and address
> announcements (respectively sections 3.5.9 and 3.5.13); however a
> subscriber cannot unsubscribe, i.e. neither "Stop announcing
> configuration element" nor "Stop announcing address" are specified in
> the I-D. Is there a reason to this?
>=20
> No, I think it's an oversight.
>=20
> > In sections 3.5.23.4 and 3.5.23.5: messages are "interface is going
> away" and "interface is going up". However, according to examples given
> (interfaces switched on/off) these notification messages are sent when
> the interface is already down or up. So, I think "is going" is
> confusing here, maybe these messages should be "interface down" and
> "interface up", right?
>=20
> This section needs work.   There actually should be a notification that
> the interface is still up but that the system intends to take it down;
> there should be another when it is in fact down.
>=20

Ok, I see. I agree, we need  Interface_going_down and Interface_going_up to=
 "prepare" the application for a future change of the interface status.

We also need for reactive notifications Interface_down (the interface went =
down suddenly, e.g loss of wi-fi coverage, user switched off the interface)=
 and Interface_up. Here, I guess it can be done with "Interface announcemen=
t" and  "no Interface announcement", right?

> > What is the difference between notifications "interface is going
> down/up" (sections 3.5.23.4 and 3.5.23.5) and interface announcement/no
> interface announcement in section  3.5.3 and 3.5.4? IMHO, the
> application subscribes to interface announcement and resulting
> announcements are the same as "interface is going down/up", so I think
> there no need for specific messages 3.5.23.4 and 3.5.23.5.
>=20
> Interface announce just announces the presence of an interface that may
> have identity associations.   Typically when an application starts,
> there will already be a set of interfaces; as soon as the application
> subscribes to the interface announcement message, it will get an
> announcement for each such interface.
>=20

Ok, understood.

> > We have a "get configuration data", shouldn't we have a "set
> configuration data" as well?
>=20
> No, I don't think so.   Configuration data comes from either on-host,
> static configuration, or from dynamic protocols like RA and DHCP.
> What would be the context for an application pushing configuration
> information up?=20=20

I'm thinking about the case where the application is a connection manager. =
After making a decision, e.g. regarding the mapping of a flow to a given in=
terface, the connection manager needs to associate a routing table to the f=
low, configure NAT, modify firewall rules and policy table for source addre=
ss selection,...=20

 This just sounds like an attack vector to me-a
> malicious app could capture traffic from another app by gaming the
> configuration settings.

Well, currently, connection managers can leverage on kernel tools (e.g. Lin=
ux/iptables) to dynamically influence the configuration. So, if we consider=
 that the MIF API should be the unique interface for manipulation of IP obj=
ects, IMHO, "set configuration" should be part of the MIF API services.=20=
=09

___________________________________________________________________________=
______________________________________________

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Thank you.


From Ted.Lemon@nominum.com  Wed Sep 26 05:54:40 2012
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From: Ted Lemon <Ted.Lemon@nominum.com>
To: "<pierrick.seite@orange.com> " <pierrick.seite@orange.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
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On Sep 26, 2012, at 4:27 AM, <pierrick.seite@orange.com>
 wrote:
> We also need for reactive notifications Interface_down (the interface wen=
t down suddenly, e.g loss of wi-fi coverage, user switched off the interfac=
e) and Interface_up. Here, I guess it can be done with "Interface announcem=
ent" and  "no Interface announcement", right?

Yes.   Of course, the fact that you are asking these questions means that t=
he document needs work!

> I'm thinking about the case where the application is a connection manager=
. After making a decision, e.g. regarding the mapping of a flow to a given =
interface, the connection manager needs to associate a routing table to the=
 flow, configure NAT, modify firewall rules and policy table for source add=
ress selection,...=20

Yes, if you want to implement a connection manager, you will need additiona=
l API functionality.   When we originally scoped the document, we assumed t=
hat the connection manager was implicitly *part* of the MIF API, rather tha=
n a customer of it.   Of course the expectation is that some parts of the M=
IF API would be usable by the connection manager, but that the connection m=
anager would require an extensively richer API.

I think in this discussion that it's important to think about who could ben=
efit from the document.   It sounds like you have a wish to have a document=
 that would allow you to implement a connection manager, perhaps one that c=
ould show the same behavior across different handsets produced by different=
 manufacturers.   If that's your motivation, it's certainly a valid use cas=
e for a MIF API.

However, when we originally scoped this, we were not including that as part=
 of the intended set of users for the documents=97we were specifically targ=
eting applications.   Part of the reason for this was the understanding tha=
t most existing devices that we had in mind (e.g., iOS devices and Android =
devices) already had a pretty complete connection manager function, and tha=
t we didn't have the expertise to tell Apple or Google how to do a connecti=
on manager=97that was expertise that they had already developed in-house, a=
nd we would expect substantial resistance to us trying to get them to actua=
lly do an API like that.

That's not to say that such an API is a bad idea, but it's definitely scope=
 creep for the work we are doing now.   If you are interested in having an =
API with this functionality, I would argue that it ought to be presented as=
 a supplementary API to the current document, rather than being added on to=
 the current document.   Otherwise, I don't think we have any hope of compl=
eting the current document in a timely manner (it could be argued that we h=
ave already failed to do so).=20

What I would encourage you to do if you want to go down this path is think =
about the current document in terms of what it might _prevent_ you from doi=
ng in the supplementary document, and ask us to fix those bits.


From pierrick.seite@orange.com  Wed Sep 26 06:36:42 2012
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From: <pierrick.seite@orange.com>
To: 'Ted Lemon' <Ted.Lemon@nominum.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
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Date: Wed, 26 Sep 2012 13:36:39 +0000
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Cc: "mif@ietf.org" <mif@ietf.org>
Subject: Re: [mif] questions on draft-ietf-mif-api-extension
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> -----Message d'origine-----
> De=A0: Ted Lemon [mailto:Ted.Lemon@nominum.com]
> Envoy=E9=A0: mercredi 26 septembre 2012 14:55
> =C0=A0: SEITE Pierrick RD-RESA
> Cc=A0: mif@ietf.org
> Objet=A0: Re: questions on draft-ietf-mif-api-extension
>=20
> On Sep 26, 2012, at 4:27 AM, <pierrick.seite@orange.com>
>  wrote:
> > We also need for reactive notifications Interface_down (the interface
> went down suddenly, e.g loss of wi-fi coverage, user switched off the
> interface) and Interface_up. Here, I guess it can be done with
> "Interface announcement" and  "no Interface announcement", right?
>=20
> Yes.   Of course, the fact that you are asking these questions means
> that the document needs work!
>=20

Sorry for asking stupid question :-) but I just want to be sure to understa=
nd correctly the current MIF API :-)=20

> > I'm thinking about the case where the application is a connection
> manager. After making a decision, e.g. regarding the mapping of a flow
> to a given interface, the connection manager needs to associate a
> routing table to the flow, configure NAT, modify firewall rules and
> policy table for source address selection,...
>=20
> Yes, if you want to implement a connection manager, you will need
> additional API functionality.   When we originally scoped the document,
> we assumed that the connection manager was implicitly *part* of the MIF
> API, rather than a customer of it.   Of course the expectation is that
> some parts of the MIF API would be usable by the connection manager,
> but that the connection manager would require an extensively richer
> API.
>=20=09

> I think in this discussion that it's important to think about who could
> benefit from the document.   It sounds like you have a wish to have a
> document that would allow you to implement a connection manager,
> perhaps one that could show the same behavior across different handsets
> produced by different manufacturers.   If that's your motivation,=20

Exactly :-)

it's
> certainly a valid use case for a MIF API.
>=20
> However, when we originally scoped this, we were not including that as
> part of the intended set of users for the documents-we were
> specifically targeting applications.   Part of the reason for this was
> the understanding that most existing devices that we had in mind (e.g.,
> iOS devices and Android devices) already had a pretty complete
> connection manager function, and that we didn't have the expertise to
> tell Apple or Google how to do a connection manager-that was expertise
> that they had already developed in-house, and we would expect
> substantial resistance to us trying to get them to actually do an API
> like that.
>=20=09

I couldn't agree more. My intention is clearly not to specify a connection =
manager in MIF.
I'm trying to figure out what services/messages, from the MIF API (or MIF A=
PI+ OS API), can be useful for connection manager developers.=20

> That's not to say that such an API is a bad idea, but it's definitely
> scope creep for the work we are doing now.   If you are interested in
> having an API with this functionality, I would argue that it ought to
> be presented as a supplementary API to the current document, rather
> than being added on to the current document.=20=20=20


Actually, Juan-Carlos and myself have submitted a discussion draft to addre=
ss this point. Now, I understand better the purpose of the MIF API and we n=
eed to revise according to your feedback. Hopefully, we'll be ready to disc=
uss it at the next IETF.

> Otherwise, I don't think we have any hope of completing the current docum=
ent in a timely manner
> (it could be argued that we have already failed to do so).
>=20
> What I would encourage you to do if you want to go down this path is
> think about the current document in terms of what it might _prevent_
> you from doing in the supplementary document, and ask us to fix those
> bits.

I see.

Thanks again for your feedback.

Pierrick

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From: Ted Lemon <Ted.Lemon@nominum.com>
To: "<pierrick.seite@orange.com> " <pierrick.seite@orange.com>
Thread-Topic: questions on draft-ietf-mif-api-extension
Thread-Index: Ac2bM5TwhUnJUqgWSJuSLlTzTedzbwAPRX+AABF870AAGojRgAAN6BQg//+r3wA=
Date: Wed, 26 Sep 2012 14:31:42 +0000
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Subject: Re: [mif] questions on draft-ietf-mif-api-extension
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On Sep 26, 2012, at 9:36 AM, <pierrick.seite@orange.com>
 wrote:
> Actually, Juan-Carlos and myself have submitted a discussion draft to add=
ress this point. Now, I understand better the purpose of the MIF API and we=
 need to revise according to your feedback. Hopefully, we'll be ready to di=
scuss it at the next IETF.

Yup, I was happy to see that, but haven't had time to read it yet.   If you=
 get a new version out before the next IETF, I'll be ready to discuss it wi=
th you there.   :)

