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Re: [babel] Tsvart last call review of draft-ietf-babel-mac-relaxed-04

Kyle Rose <krose@krose.org> Sat, 15 April 2023 14:16 UTC

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From: Kyle Rose <krose@krose.org>
Date: Sat, 15 Apr 2023 10:15:53 -0400
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To: Juliusz Chroboczek <jch@irif.fr>
Cc: David Schinazi <dschinazi.ietf@gmail.com>, tsv-art@ietf.org, babel@ietf.org, draft-ietf-babel-mac-relaxed.all@ietf.org, last-call@ietf.org
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Subject: Re: [babel] Tsvart last call review of draft-ietf-babel-mac-relaxed-04
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On Fri, Apr 14, 2023 at 3:53 PM Juliusz Chroboczek <jch@irif.fr> wrote:

> We only have circumstantial
> evidence: none of our users have reported issues with 8967 since we
> implemented Section 3.1.  (Section 3.2 is implemented in BIRD but not in
> babeld.)
>
> While I share your anxiety, I am unwilling to make the protocol any more
> complex than what is required in order to work well in actual deployments.
>

I think you and David are both reading too much into my review. I am not
suggesting any protocol changes are required or even desirable. I'm
suggesting that, for a document relying on observed behavior that does not
match normative expectations, the justification for acceptability of the
design choice should be clearly documented. A relevant data point is given
in your first sentence above. Another might be a reference to literature
showing only sporadic out-of-order delivery within individual flows.

But any such changes are up to you and the WG and the IETF at large. My
review comments are not dispositive for IETF consensus.

Kyle

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