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Re: [RTG-DIR] [babel] Rtgdir early review of draft-ietf-babel-source-specific-01

Toke Høiland-Jørgensen <toke@toke.dk> Thu, 09 November 2017 00:19 UTC

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From: Toke Høiland-Jørgensen <toke@toke.dk>
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To: Matthieu Boutier <boutier@irif.fr>, Joel Halpern <jmh@joelhalpern.com>
Cc: rtg-dir@ietf.org, draft-ietf-babel-source-specific.all@ietf.org, babel@ietf.org
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Date: Thu, 09 Nov 2017 09:18:55 +0900
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Subject: Re: [RTG-DIR] [babel] Rtgdir early review of draft-ietf-babel-source-specific-01
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Matthieu Boutier <boutier@irif.fr> writes:

> Hi,
>
> Thank's a lot for this early review.
>
>> Please address the issues reported by id-nits.
>
> Please accept my apologizes about these nits.
>
>> The base Babel (bis) specification does not talk about the handling of
>> duplicate sub-TLVs.  Are multiple source-specific sub-TLVs allowed on a given
>> destination prefix advertisement?
>
> I believe it is clear that a Babel node MUST NOT send two Source Prefix sub-TLVs
> in one TLV.  But If a received TLV has two Source Prefix sub-TLVs, I hesitate:
> does a node SHOULD or MUST ignore the whole TLV?
>
> Does the list have an opinion?

Off the top of my head: Ignore the whole thing; better to fail
(preferably loudly) than carry on with ambiguous semantics.

-Toke

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