Re: 64share v2

Mikael Abrahamsson <swmike@swm.pp.se> Tue, 10 November 2020 09:56 UTC

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Date: Tue, 10 Nov 2020 10:56:20 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Lorenzo Colitti <lorenzo@google.com>
cc: Ca By <cb.list6@gmail.com>, Erik Kline <ek@loon.com>, Ipv <ipv6@ietf.org>
Subject: Re: 64share v2
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On Tue, 10 Nov 2020, Lorenzo Colitti wrote:

> This looks pretty similar to the PIO-X bit which +Erik Kline <ek@loon.com>
> and +Mikael Abrahamsson <swmike@swm.pp.se> wrote up in 2017:
>
> https://tools.ietf.org/html/draft-pioxfolks-6man-pio-exclusive-bit
>
> I can't remember what happened to that. IIRC one of the primary
> difficulties was that the scheme needs a strong guarantee from the link
> layer that the RA is received by only one host. The minutes from IETF 98
> <https://datatracker.ietf.org/doc/minutes-98-6man/00/> suggest that
> there was also a concern that it duplicates existing functionality in
> DHCPv6 PD. Also there was a question about the router being able to
> authenticate the client.
>
> Maybe time to revive this?

Yes, something like that was what I thought of. Just send a /56 PIO-X RA 
down the GTP bearer, it'll just have a single recipient since it's a point 
to point tunnel.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se