RE: draft-gont-6man-managing-privacy-extensions-00.txt

Christian Huitema <huitema@microsoft.com> Wed, 16 March 2011 06:29 UTC

Return-Path: <huitema@microsoft.com>
X-Original-To: ipv6@core3.amsl.com
Delivered-To: ipv6@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id E99203A67DB for <ipv6@core3.amsl.com>; Tue, 15 Mar 2011 23:29:23 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10.574
X-Spam-Level:
X-Spam-Status: No, score=-10.574 tagged_above=-999 required=5 tests=[AWL=0.025, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 93kcjrmwupg7 for <ipv6@core3.amsl.com>; Tue, 15 Mar 2011 23:29:23 -0700 (PDT)
Received: from smtp.microsoft.com (smtp.microsoft.com [131.107.115.215]) by core3.amsl.com (Postfix) with ESMTP id 1AD1F3A67E5 for <ipv6@ietf.org>; Tue, 15 Mar 2011 23:29:23 -0700 (PDT)
Received: from TK5EX14MLTC101.redmond.corp.microsoft.com (157.54.79.178) by TK5-EXGWY-E802.partners.extranet.microsoft.com (10.251.56.168) with Microsoft SMTP Server (TLS) id 8.2.176.0; Tue, 15 Mar 2011 23:30:47 -0700
Received: from TK5EX14MLTW652.wingroup.windeploy.ntdev.microsoft.com (157.54.71.68) by TK5EX14MLTC101.redmond.corp.microsoft.com (157.54.79.178) with Microsoft SMTP Server (TLS) id 14.1.270.2; Tue, 15 Mar 2011 23:30:47 -0700
Received: from TK5EX14MBXW653.wingroup.windeploy.ntdev.microsoft.com ([169.254.3.56]) by TK5EX14MLTW652.wingroup.windeploy.ntdev.microsoft.com ([157.54.71.68]) with mapi id 14.01.0270.002; Tue, 15 Mar 2011 23:30:47 -0700
From: Christian Huitema <huitema@microsoft.com>
To: Fernando Gont <fernando@gont.com.ar>, Brian E Carpenter <brian.e.carpenter@gmail.com>
Subject: RE: draft-gont-6man-managing-privacy-extensions-00.txt
Thread-Topic: draft-gont-6man-managing-privacy-extensions-00.txt
Thread-Index: AQHL3kEKAbTYw5EzSU+RGMZ29OXheJQlYKSAgAB+ZoCAACGDgIAIx/UAgACtu4CAADp8AP//2TmQ
Date: Wed, 16 Mar 2011 06:30:46 +0000
Message-ID: <22F6318E46E26B498ABC828879B08D4F0C40AA@TK5EX14MBXW653.wingroup.windeploy.ntdev.microsoft.com>
References: <7111FC5F-BC3F-4242-9C3F-037E79894749@gmail.com> <alpine.DEB.1.10.1103091212570.7942@uplift.swm.pp.se> <4D77CBB9.1080702@gmail.com> <20110310071925.309d467b@opy.nosense.org> <4D7F539E.7030308@gont.com.ar> <4D7FE55B.7050207@gmail.com> <4D80166A.9060502@gont.com.ar>
In-Reply-To: <4D80166A.9060502@gont.com.ar>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [157.54.123.12]
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Cc: "ipv6@ietf.org" <ipv6@ietf.org>, Ran Atkinson <ran.atkinson@gmail.com>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/ipv6>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Mar 2011 06:29:24 -0000

> Then what's all this controversy with draft-gont-6man-managing-privacy-extensions? :-) -- That aside, there have been quite a few publications asessing the real "privacy" provided with the so-called privacy-extensions....

Using randomized host identifiers is way more private than sticking a MAC address in the IPv6 address. In fact, rather than your draft proposing to not use privacy addresses, we should pursue the deprecation of using EUI-64 in addresses.

The worst part of your draft is that , if we published it, it would give the impression that for the IETF, EUI-64 addresses are more secure than privacy addresses. This is obviously false.

-- Christian Huitema