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Re: [v6ops] Implementation Status of PREF64

Ted Lemon <mellon@fugue.com> Mon, 11 October 2021 16:14 UTC

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From: Ted Lemon <mellon@fugue.com>
Date: Mon, 11 Oct 2021 12:13:43 -0400
Message-ID: <CAPt1N1ma45GKqXcvjHUGCYFKVbEGp3OuT013pZhrnOkFFLMiQA@mail.gmail.com>
To: Owen DeLong <owen=40delong.com@dmarc.ietf.org>
Cc: Lorenzo Colitti <lorenzo=40google.com@dmarc.ietf.org>, v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] Implementation Status of PREF64
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On Mon, Oct 11, 2021 at 12:01 PM Owen DeLong <owen=
40delong.com@dmarc.ietf.org> wrote:

> However, they’re not going to want IA_PD addresses on the directly
> attached interface. They’re going to want IA_NA there and to route the
> IA_PD prefix to the host via ND resolution of the MAC of it’s IA_NA address.
>
> This isn't really necessary, although it's common practice. If the device
is not going to use the prefix on the DHCP-ward link, it can use the
address on the link it /does/ use the prefix on as its GUA. Its link-local
address on the DHCP-ward link will suffice for routing, and is known to the
DHCP server because that's the address it used to do the IA_PD.

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