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

Henning Rogge <hrogge@googlemail.com> Tue, 09 July 2013 15:11 UTC

Return-Path: <hrogge@googlemail.com>
X-Original-To: homenet@ietfa.amsl.com
Delivered-To: homenet@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B8D1721F9EC5 for <homenet@ietfa.amsl.com>; Tue, 9 Jul 2013 08:11:50 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.978
X-Spam-Level:
X-Spam-Status: No, score=-1.978 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FM_FORGED_GMAIL=0.622, NO_RELAYS=-0.001]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sUeiOsVYRtHa for <homenet@ietfa.amsl.com>; Tue, 9 Jul 2013 08:11:50 -0700 (PDT)
Received: from mail-qc0-x235.google.com (mail-qc0-x235.google.com [IPv6:2607:f8b0:400d:c01::235]) by ietfa.amsl.com (Postfix) with ESMTP id 01CE521F9A17 for <homenet@ietf.org>; Tue, 9 Jul 2013 08:11:49 -0700 (PDT)
Received: by mail-qc0-f181.google.com with SMTP id u12so3025846qcx.12 for <homenet@ietf.org>; Tue, 09 Jul 2013 08:11:49 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=fwNb1l2XsX8GHUgJ8kSWxfLUfatiq9+Qe7n/M0JiTps=; b=WJRTIA7NVeFzdXVWBInQFSVoCGZ/ZEbrQHpHTDQonfLn754Oc/3vIKYSbHcFkZGCIs i00mQamOAXvhR8snSpnBjQcbieeQV6yyGUXKJYcfQJjKWY5OpqSk8JOOppuAS9iXO8GA s4aTzrQx7pIin6VduzUsBcUH08fIjpE6vguiDJEgSJSOgQOLN3Thneb7F0iZZ99IoswJ OiKzrbVqTdLvQXx2Rxem9xENTpPuni6MFyfOS4lSPjN/lYmrQjqYW9hjEPOaeb03PQaX FDIkFQcXzXdhpqurfYFy7ihPnmRDG4h2WEaMXzeFXDIOa76f8v5hY1n16QRZGbJahby9 3YfA==
X-Received: by 10.224.162.210 with SMTP id w18mr4563998qax.56.1373382709519; Tue, 09 Jul 2013 08:11:49 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.224.27.73 with HTTP; Tue, 9 Jul 2013 08:11:29 -0700 (PDT)
In-Reply-To: <87bo6bwzxn.wl%jch@pps.univ-paris-diderot.fr>
References: <7ippuz4fb8.wl%jch@pps.univ-paris-diderot.fr> <CAKD1Yr3HZOJecNP6hE1yOBdGAxxXzMb5W23aPm9XhZv0fzKBUQ@mail.gmail.com> <7ibo6iw7ch.wl%jch@pps.univ-paris-diderot.fr> <CAKD1Yr0_yZsvw58hwjY++9RJT9urkKbX33zzwTjyWGTKK7RoVg@mail.gmail.com> <87ehbdi33a.wl%jch@pps.univ-paris-diderot.fr> <CAKD1Yr0x=j0tvkM2X8bGw4T538mnm7CV592GBHO76dSVhGLE7w@mail.gmail.com> <87wqp0lal6.wl%jch@pps.univ-paris-diderot.fr> <CAKD1Yr1knC76T14bcGY3kbYBMNfhvC9vACjguNaWCdRXxZ-4UA@mail.gmail.com> <87bo6bwzxn.wl%jch@pps.univ-paris-diderot.fr>
From: Henning Rogge <hrogge@googlemail.com>
Date: Tue, 09 Jul 2013 17:11:29 +0200
Message-ID: <CAGnRvuqdhmYiUk5roQw0iNbyfm49Fixjo_44f_HcCLjKpZdYNA@mail.gmail.com>
To: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
Content-Type: text/plain; charset="ISO-8859-1"
Cc: "homenet@ietf.org" <homenet@ietf.org>, Lorenzo Colitti <lorenzo@google.com>
Subject: Re: [homenet] draft-boutier-homenet-source-specific-routing-00
X-BeenThere: homenet@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: <homenet.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/homenet>, <mailto:homenet-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/homenet>
List-Post: <mailto:homenet@ietf.org>
List-Help: <mailto:homenet-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/homenet>, <mailto:homenet-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Jul 2013 15:11:50 -0000

On Tue, Jul 9, 2013 at 4:49 PM, Juliusz Chroboczek
<jch@pps.univ-paris-diderot.fr> wrote:
> 1. Do different forwarding behaviours interoperate?
>
> The general answer is no -- incompatible forwarding behaviours cause
> persistent routing loops (Section 2.2.2).  However, there are
> particular cases where everything works out, most importantly mixing
> source-specific and ordinary next-hop routing (Section 4.1).  (Please
> do not underestimate the importance of this property -- what it says
> is that you can mix "legacy" routers with source-specific ones.)

Having multiple source-specific default routes (0.0.0.0/0 or ::/0) are
a good recipe for routing loops if some routers don't support
source-specific routing.

Henning Rogge

--
We began as wanderers, and we are wanderers still. We have lingered
long enough on the shores of the cosmic ocean. We are ready at last to
set sail for the stars - Carl Sagan