Re: [spring] draft-ali-6man-spring-srv6-oam-00

Robert Raszuk <rraszuk@gmail.com> Thu, 23 May 2019 08:31 UTC

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From: Robert Raszuk <rraszuk@gmail.com>
Date: Thu, 23 May 2019 10:31:44 +0200
Message-ID: <CA+b+ERn5t0oW4xZip8iRCpwnKR5AEan0qg2_bycnj9rrLhEC9w@mail.gmail.com>
Subject: Re: [spring] draft-ali-6man-spring-srv6-oam-00
To: Loa Andersson <loa@pi.nu>
Cc: Rajesh M <mrajesh=40juniper.net@dmarc.ietf.org>, SPRING WG <spring@ietf.org>, 6man WG <ipv6@ietf.org>
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Hi Loa,

On Thu, May 23, 2019 at 5:42 AM Loa Andersson <loa@pi.nu> wrote:

> Rajesh,
>
> It seems to me that "it is recommended" indicate that the ordering is
> optional/OPTIONAL.


Indeed. There is no MUST there. That is precisely what section 4.1 of
RFC8200 says:

4.1 <https://tools.ietf.org/html/rfc8200#section-4.1>.  Extension Header Order

 When more than one extension header is used in the same packet, it is

*  recommended *that those headers appear in the following order:

Does this document (or your comment) create a
> MANDATORY ordering of EH's??
>

If by "this document" you mean draft-ali-6man-spring-srv6-oam then no - I
do not see any text there which would even attempt to enforce any EH
ordering.

As far as creating MANDATORY ordering "by a comment" that must be pretty
new extension to the IETF process :)

Best,
R.