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Re: [homenet] The minimal Babel profile for Homenet

Lorenzo Colitti <lorenzo@google.com> Tue, 03 November 2015 14:30 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Tue, 03 Nov 2015 23:29:59 +0900
Message-ID: <CAKD1Yr04WpmQqSv62_79=SFL2nV6EPYFm+82mxzX4E2tR1i74A@mail.gmail.com>
To: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
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Cc: "homenet@ietf.org" <homenet@ietf.org>, "STARK, BARBARA H" <bs7652@att.com>
Subject: Re: [homenet] The minimal Babel profile for Homenet
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On Wed, Oct 28, 2015 at 10:07 PM, Juliusz Chroboczek <
jch@pps.univ-paris-diderot.fr> wrote:

> Fully agreed, but I'm not sure what is the WG's thinking about IPv4.  RFC
> 7368 (Homenet arch) is conveniently vague about IPv4.  My reading is that
> the authors of RFC 7368 expected that router vendors will use multiple NAT
> for IPv4, and that they will ignore whatever we mandate.
>

I think the base view is, "we'll spec things for IPv6; if IPv4 gets the
benefit, so much better".

In this case... what's do we get from doing src/dest routing for IPv4 given
that a host only ever has one IPv4 address? Is it just that we get
dest-based routing without NATs in the way? But if so, then how does IPv4
renumbering work without NAT?

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