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Re: [IPv6] Working Group Last Call for <draft-ietf-6man-pio-pflag>

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 04 April 2024 22:48 UTC

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Date: Fri, 05 Apr 2024 11:48:29 +1300
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/f0zLlspD-KqRyqzEun7VYvWUlBk>
Subject: Re: [IPv6] Working Group Last Call for <draft-ietf-6man-pio-pflag>
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Hi,

I have re-read this and support it moving forward.

One minor comment: The whole draft, including the "Host Behaviour" section, assumes without stating it that the host contains an active DHCPv6 client. This is only a SHOULD in BCP220 (https://www.rfc-editor.org/rfc/rfc8504.html#section-6.5). This should be mentioned somehow - e.g. a statement in the Introduction that the mechanism is only applicable to hosts that implement that SHOULD.

Theoretically, an operator might encounter hosts that don't support DHCPv6 at all and will blindly use SLAAC. Presumably, such hosts will silently ignore the P flag, but I can't see any text in RFC4861 about handling unknown flags.

Regards
    Brian Carpenter

On 05-Apr-24 09:48, Bob Hinden wrote:
> This message starts a new two week 6MAN Working Group Last Call on
> advancing:
> 
>    Title:   Signalling DHCPv6 Prefix Delegation Availability to Hosts
>    Authors: Lorenzo Colitti
>             Jen Linkova
>             Xiao Ma
>             David 'equinox' Lamparter
>    Name:    draft-ietf-6man-pio-pflag-02.txt
>    Pages:   13
>    Dates:   2024-03-21
> 
>    https://datatracker.ietf.org/doc/html/draft-ietf-6man-pio-pflag-02
> 
> as a Standards Track document.
> 
> Substantive comments and statements of support for publishing this
> document should be directed to the ipv6@ietf.org mailing list.
> 
> Editorial suggestions should be sent to the authors.
> 
> This last call will end on April 18 2024, 23:00 UTC.
> 
> Bob & Ole
> 6man chairs
> 
> 
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