Re: [spring] Question about SRv6 Insert function

<bruno.decraene@orange.com> Thu, 05 September 2019 14:46 UTC

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From: <bruno.decraene@orange.com>
To: Fernando Gont <fernando@gont.com.ar>
CC: Ron Bonica <rbonica=40juniper.net@dmarc.ietf.org>, "spring@ietf.org" <spring@ietf.org>, "6man@ietf.org" <6man@ietf.org>, draft-voyer-6man-extension-header-insertion <draft-voyer-6man-extension-header-insertion@ietf.org>, li zhenqiang <li_zhenqiang@hotmail.com>, draft-ietf-spring-srv6-network-programming <draft-ietf-spring-srv6-network-programming@ietf.org>, Suresh Krishnan <suresh.krishnan@gmail.com>
Thread-Topic: [spring] Question about SRv6 Insert function
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Date: Thu, 5 Sep 2019 14:46:11 +0000
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Subject: Re: [spring] Question about SRv6 Insert function
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Fernando,

 
> From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Fernando Gont
> Sent: Tuesday, September 3, 2019 1:18 PM
> 
> Hello, Suresh,
> 
> On 2/9/19 19:07, Suresh Krishnan wrote:
> [....]
> >>> So, we should probably explore the motivation for Option 2). If the
> >>> motivation is not sufficient, we should probably standardize on Option 1.
> >>
> >> My argument would be:
> >> Folks would do whatever they please with 1). If somehow they feel the
> >> need to do 2), they should *refrain from even suggesting it*, post an
> >> internet draft that proposes to update RFC8200 to allow for the
> >> insertion of EHs, wait for that to be adopted and published, and only
> >> then suggest to do EH insertion.
> > 
> > I have put down my thoughts on the future of header insertion work in a
> > mail to the 6man list in May 2017. The mail can be found below
> > 
> > https://mailarchive.ietf.org/arch/msg/ipv6/4MevopH9_iQglUizhoT5Rl-TjRc
> 
> This seems e bit misleading. What I would expect is that before any work
> is published on EH-insertion, the IPv6 standard is updated to allow for
> EH insertion. (plese see bellow)
> 
> 
> 
> 
> >> P.S.: Given the amount of discussion there has been on this topic in the
> >> context of RFC8200, I'd like to hope that there's no draft-ietf document
> >> suggesting EH-insertion or, if there is, the relevant ADs and chairs
> >> make sure that's not the case anymore.
> > 
> > Yes. If a draft violates RFC8200 and it hits the IESG for evaluation, I
> > will certainly hold a DISCUSS position until the violations are fixed.
> 
> Since there have been plenty of attempts to do EH insertion or leave the
> IPv6 standard ambiguous in this respect, and the IETF has had consensus
> that EH insertion is not allowed, I think it would be bad, wastefull,
> tricky, and even dangerous to let a document go through the whole
> publication process, and just rely on the AD to keep the "DISCUSS"
> button pressed.

draft-ietf-spring-srv6-network-programming has a normative reference to [I-D.voyer-6man-extension-header-insertion]
 https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-01#section-13.1

As such, from a process standpoint, it would not going to be published before [I-D.voyer-6man-extension-header-insertion] be itself published as RFC. And from its name, the latter is intended to be discussed and within control of the 6MAN WG. So I don't think that we can say that it "just rely on the AD to keep the "DISCUSS" button pressed."

In my mind, this should also be a clear indication that the question of header insertion is (to be) within the control of the 6MAN WG. But you may have a different opinion.

Regards,
--Bruno
 
> Put another way: what'd be the rationale for having a draft-ietf and
> have the corresponding wg ship the document with something that clearly
> goes against IETF consensus, and that the relevant AD has declared that
> wouldn't let pass?
> 
> 
> -- 
> Fernando Gont
> e-mail: fernando@gont.com.ar || fgont@si6networks.com
> PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
> 
> 
> 
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> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring

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