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Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt

Lorenzo Colitti <lorenzo@google.com> Thu, 17 August 2017 07:00 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 17 Aug 2017 15:59:38 +0900
Message-ID: <CAKD1Yr1dy3nqiV47NeCEEqYL9ty6V25JYew8uVf_VTNQv=kV1A@mail.gmail.com>
To: DaeYoung KIM <dykim6@gmail.com>
Cc: "v6ops@ietf.org WG" <v6ops@ietf.org>, Simon Hobson <linux@thehobsons.co.uk>
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Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt
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On Thu, Aug 17, 2017 at 3:49 PM, DaeYoung KIM <dykim6@gmail.com> wrote:

> > Ah, I see. If you're asking whether you can use this technique to hand
> out a /96 per host, then the answer is no. You can't use this technique
> because this technique presumes the use of SLAAC, and SLAAC only works with
> 64-bit prefixes (except for addresses in ::/3, which aren't routable on the
> Internet).
> >
> > If you're suggesting that SLAAC be changed to support non-64 bit
> prefixes, that topic is out of scope for this document and this working
> group
>
> As I know, SLAAC by itself doesn't impose restrictions on the IID length.
> It's Addr Arch (4291bis) that imposes it.
>
> Then, are all deployed SLLAC software hard-coded to 64 bits? If properly
> implemented, the IID length should remain a parameter that can be set by an
> admin.
>
> Should the latter be the case, my life would get easiest.
>

Again, that topic is out of scope for this document and this working group.

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