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Re: I-D Action: draft-carpenter-6man-lap-00.txt

Lorenzo Colitti <lorenzo@google.com> Wed, 13 June 2018 15:38 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 14 Jun 2018 00:38:24 +0900
Message-ID: <CAKD1Yr0+3du2ZON_LfQWSBzbe26XJpp4=yuF30AmyUZmA2u3wg@mail.gmail.com>
Subject: Re: I-D Action: draft-carpenter-6man-lap-00.txt
To: Nick Hilliard <nick@foobar.org>
Cc: "Brian E. Carpenter" <brian.e.carpenter@gmail.com>, IETF IPv6 Mailing List <ipv6@ietf.org>
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On Thu, Jun 14, 2018 at 12:25 AM Nick Hilliard <nick@foobar.org> wrote:

> > RFC 4291 says that IPv6 addresses are composed of n-bit subnet prefixes
> > and 128-n bit interface IDs. Then it says that for pretty much all
> > unicast addresses 128-n=64. Thus, n=64.
>
> "pretty much all" != "all"
>
> This may be what Brian is talking about.
>

I doubt it. The difference between "pretty much all" and "all" is unicast
addresses that start with binary 000, which aren't routable on the Internet.

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