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Re: [dhcwg] I-D Action: draft-ietf-dhc-addr-notification-08.txt

Lorenzo Colitti <lorenzo@google.com> Fri, 19 January 2024 03:44 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Fri, 19 Jan 2024 12:43:46 +0900
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To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: Jen Linkova <furry13@gmail.com>, dhcwg@ietf.org
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Subject: Re: [dhcwg] I-D Action: draft-ietf-dhc-addr-notification-08.txt
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On Thu, Jan 18, 2024 at 2:13 AM Michael Richardson <mcr+ietf@sandelman.ca>
wrote:

>
> }           If revealing other hosts addresses and
> }          alllowing onlink peer-to-peer communication is undesirable for a
> }          given network segment, then layer2 (link-layer) isolation shall
> be
> }          used.
>
> I think you'll get a BCP14 query on "shall" here from the IESG.
> (And I hate putting BCP14 into Security Considerations, so upcasing that
> would not be my choice)
>

Any reason not to just say MUST here? I think it's pretty straightforward.
This mechanism relies on hosts multicasting their own addresses. If you
have a problem with hosts seeing each other's addresses, then you MUST
ensure that that happens at layer 2?

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