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Re: [Last-Call] [Tsv-art] Tsvart last call review of draft-ietf-v6ops-transition-comparison-02

"Brian Trammell (IETF)" <ietf@trammell.ch> Tue, 15 March 2022 16:38 UTC

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From: "Brian Trammell (IETF)" <ietf@trammell.ch>
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Date: Tue, 15 Mar 2022 17:37:20 +0100
Cc: "tsv-art@ietf.org" <tsv-art@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>, "v6ops@ietf.org" <v6ops@ietf.org>, "draft-ietf-v6ops-transition-comparison.all@ietf.org" <draft-ietf-v6ops-transition-comparison.all@ietf.org>
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To: Magnus Westerlund <magnus.westerlund=40ericsson.com@dmarc.ietf.org>
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Subject: Re: [Last-Call] [Tsv-art] Tsvart last call review of draft-ietf-v6ops-transition-comparison-02
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Fair enough… so disregard my comment re SCTP, but please do consider being precise about what port-aware means here.

Thanks, cheers,

Brian

> On 15 Mar 2022, at 17:35, Magnus Westerlund <magnus.westerlund=40ericsson.com@dmarc.ietf.org> wrote:
> 
> 
> 
>> The document clearly explains the reliance of double-translation
> approaches
>> on ports in the transport layer, though it might be useful to note that
> "port
>> aware" means "has a 16-bit source port in network order at octet 0 and a
> 16-
>> bit destination port in network order at octet 2", and though I suspect
> that
>> very few shipping translators support SCTP, it'd be nice to note that SCTP
> is
>> indeed port aware.
>> 
> 
> I would be careful here. If one applies NAPT per UDP/TCP model to SCTP it
> will break SCTP. SCTP NAT is being worked on:
> https://datatracker.ietf.org/doc/draft-ietf-tsvwg-natsupp/
> 
> /Magnus
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