Re: [homenet] Which IP addresses must be avoided?

Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr> Wed, 18 May 2016 19:58 UTC

Return-Path: <jch@pps.univ-paris-diderot.fr>
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 315FF12D6A0 for <homenet@ietfa.amsl.com>; Wed, 18 May 2016 12:58:19 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lexuh-p8CNwy for <homenet@ietfa.amsl.com>; Wed, 18 May 2016 12:58:17 -0700 (PDT)
Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 03137128B44 for <homenet@ietf.org>; Wed, 18 May 2016 12:58:16 -0700 (PDT)
Received: from potemkin.univ-paris7.fr (potemkin.univ-paris7.fr [IPv6:2001:660:3301:8000::1:1]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/56228) with ESMTP id u4IJwFBx018771 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 18 May 2016 21:58:15 +0200
Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by potemkin.univ-paris7.fr (8.14.4/8.14.4/relay2/56228) with ESMTP id u4IJwE38018526; Wed, 18 May 2016 21:58:14 +0200
Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 6BB1661FA8; Wed, 18 May 2016 21:58:14 +0200 (CEST)
X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr
Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id OUJlPbDt0uOx; Wed, 18 May 2016 21:58:13 +0200 (CEST)
Received: from trurl.pps.univ-paris-diderot.fr (col75-1-78-194-40-74.fbxo.proxad.net [78.194.40.74]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 1285D61FA2; Wed, 18 May 2016 21:58:12 +0200 (CEST)
Date: Wed, 18 May 2016 21:58:12 +0200
Message-ID: <87k2ir6svf.wl-jch@pps.univ-paris-diderot.fr>
From: Juliusz Chroboczek <jch@pps.univ-paris-diderot.fr>
To: Mikael Abrahamsson <swmike@swm.pp.se>
In-Reply-To: <alpine.DEB.2.02.1605180900490.28372@uplift.swm.pp.se>
References: <87wpms8zvo.wl-jch@pps.univ-paris-diderot.fr> <5ae48799-cb13-2b68-a4cc-a56b6174ae4f@bellis.me.uk> <573B4BA3.9020709@isi.edu> <0714bb3f-3450-2cb2-d685-b3142faf3018@bogus.com> <alpine.DEB.2.02.1605180900490.28372@uplift.swm.pp.se>
User-Agent: Wanderlust/2.15.9
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset=US-ASCII
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]); Wed, 18 May 2016 21:58:15 +0200 (CEST)
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (potemkin.univ-paris7.fr [194.254.61.141]); Wed, 18 May 2016 21:58:15 +0200 (CEST)
X-Miltered: at korolev with ID 573CC957.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)!
X-Miltered: at potemkin with ID 573CC956.000 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)!
X-j-chkmail-Enveloppe: 573CC957.001 from potemkin.univ-paris7.fr/potemkin.univ-paris7.fr/null/potemkin.univ-paris7.fr/<jch@pps.univ-paris-diderot.fr>
X-j-chkmail-Enveloppe: 573CC956.000 from mailhub.math.univ-paris-diderot.fr/mailhub.math.univ-paris-diderot.fr/null/mailhub.math.univ-paris-diderot.fr/<jch@pps.univ-paris-diderot.fr>
X-j-chkmail-Score: MSGID : 573CC957.001 on korolev.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000
X-j-chkmail-Score: MSGID : 573CC956.000 on potemkin.univ-paris7.fr : j-chkmail score : . : R=. U=. O=. B=0.000 -> S=0.000
X-j-chkmail-Status: Ham
X-j-chkmail-Status: Ham
Archived-At: <http://mailarchive.ietf.org/arch/msg/homenet/qhFUFujnHHgFHwZJK5yhV3X1luU>
Cc: homenet@ietf.org
Subject: Re: [homenet] Which IP addresses must be avoided?
X-BeenThere: homenet@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: IETF Homenet WG mailing list <homenet.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/homenet>, <mailto:homenet-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/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: Wed, 18 May 2016 19:58:19 -0000

> I have talked to operator colleagues and found several who use .0 and .255
> IPv4 adresses handed out to customers for Internet communication without
> ill effects.

The customers are probably behind NAT, so I'm not sure how much that says
about the compatibility of client devices.

> So while this was a problem 10-20 years ago, I'd say it isn't now.

Agreed, let's not avoid these addresses.  (Although the point is somewhat
academic in the case of both hnetd and shncpd, which assign /24 by default.)

-- Juliusz