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Re: RFC4862 and 64-bit IID (Re: draft-bourbaki-6man-classless-ipv6-00)

David Farmer <farmer@umn.edu> Mon, 19 June 2017 17:18 UTC

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From: David Farmer <farmer@umn.edu>
Date: Mon, 19 Jun 2017 12:16:21 -0500
Message-ID: <CAN-Dau0vGq-PTTkezEFmpAVFKXzvoJLkryTTKZpeNkG85xqShA@mail.gmail.com>
Subject: Re: RFC4862 and 64-bit IID (Re: draft-bourbaki-6man-classless-ipv6-00)
To: Job Snijders <job@ntt.net>
Cc: Erik Kline <ek@google.com>, 6man WG <ipv6@ietf.org>, JINMEI Tatuya / 神明達哉 <jinmei@wide.ad.jp>
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On Mon, Jun 19, 2017 at 11:45 AM, Job Snijders <job@ntt.net> wrote:

> On Tue, Jun 20, 2017 at 01:26:24AM +0900, Erik Kline wrote:
> > > I'd also note once again that this discussion has nothing to do with
> > > the fact that we can perform 'ifconfig en0 2001:db8::1/120'.  This
> > > operation configures a 128-bit IPv6 address with 120-bit on-link
> > > prefix.  On-link prefixes have always been variable, and they have
> > > nothing to do with IID length or SLAAC.  We don't have to update
> > > addr-arch or RFC4862 because of this.  (draft-bourbaki-6man-
> > > classless-ipv6-00 seems to be confused on this point, and I suspect
> > > it increases the confusion and controversy in this whole thread).
> >
> > Agreed.
>
> Is there a document that states that IPv6 routers and hosts must support
> on-link prefixes of all sizes?
>
> Kind regards,
>
> Job
>

I believe this is what RFC7608 says, except I don't think it uses the term
on-link, which it probably should.

Thanks.

-- 
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David Farmer               Email:farmer@umn.edu
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
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