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Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-ent64pd-01.txt

Lorenzo Colitti <lorenzo@google.com> Tue, 20 December 2022 07:59 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Tue, 20 Dec 2022 16:58:59 +0900
Message-ID: <CAKD1Yr3GuG_h=4tEa3dqwxdhj+fiMZMO31C7+tiSzHVok+5e5Q@mail.gmail.com>
To: Gert Doering <gert@space.net>
Cc: Jen Linkova <furry13@gmail.com>, V6 Ops List <v6ops@ietf.org>, draft-collink-v6ops-ent64pd@ietf.org, xiaom@google.com
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Subject: Re: [v6ops] Fwd: New Version Notification for draft-collink-v6ops-ent64pd-01.txt
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On Tue, Dec 20, 2022 at 4:19 PM Gert Doering <gert@space.net> wrote:

> > Delegating a /64 prefix to the client allows the client to provide
> > limitless addresses to IPv6 nodes connected to it (e.g., virtual
> machines,
> > tethered devices), because all IPv6 nodes are required to support SLAAC.
>
> There is no existing mechanism in hosts to handle distribution of
> address distributed by DHCPv6-PD using "a SLAAC like algorithm",
> so that argument is not convincing.  Especially as "all nodes are
> required to support SLAAC" is totally not relevant here, if the
> prefix is not arriving as a RA with A=1.
>

The client can simply bridge all the clients together on a virtual Ethernet
and send an RA with A=1. That's no different than what an RFC7084-style CPE
does, except on a virtual ethernet instead of physical. And I'd bet a lot
of VM hosts will just work out of the box if you do it. For physical hosts,
you can do things like Wi-Fi hotspot - even bridge it to the aforementioned
virtual Ethernet if you want.

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