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Re: [homenet] draft-boutier-homenet-source-specific-routing-00

Henning Rogge <hrogge@googlemail.com> Thu, 11 July 2013 10:45 UTC

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From: Henning Rogge <hrogge@googlemail.com>
Date: Thu, 11 Jul 2013 12:44:44 +0200
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To: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
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Cc: "homenet@ietf.org" <homenet@ietf.org>
Subject: Re: [homenet] draft-boutier-homenet-source-specific-routing-00
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On Wed, Jul 10, 2013 at 6:19 PM, Juliusz Chroboczek
<jch@pps.univ-paris-diderot.fr> wrote:
> Consider this:
>
>   -- A -- B --
>
> Suppose that A announces (::/0, alpha), and B announces (::/0, beta)
> (two source-specific default routes).  Suppose further that, as you
> suggest, both A and B announce default routes (::/0, ::/0).
>
> What happens when A receives a packet that's not sourced in either
> alpha or beta?  It will route it towards B (which, you will recall, is
> announcing a non-specific default route).  Now B will send the packet
> back to A, and you're in trouble.

I would assume that a packet that is not source-ip tagged for a
specific gateway would just go out of any gateway. In this case
gateway A.

Henning Rogge

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