Re: DAD question
joel jaeggli <joelja@bogus.com> Wed, 15 August 2012 19:18 UTC
Return-Path: <joelja@bogus.com>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C8E8F21F8685 for <ipv6@ietfa.amsl.com>; Wed, 15 Aug 2012 12:18:22 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -102.599
X-Spam-Level:
X-Spam-Status: No, score=-102.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, USER_IN_WHITELIST=-100]
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 nfP3vq3T+rBS for <ipv6@ietfa.amsl.com>; Wed, 15 Aug 2012 12:18:22 -0700 (PDT)
Received: from nagasaki.bogus.com (nagasaki.bogus.com [IPv6:2001:418:1::81]) by ietfa.amsl.com (Postfix) with ESMTP id 52B6721F867F for <ipv6@ietf.org>; Wed, 15 Aug 2012 12:18:22 -0700 (PDT)
Received: from joels-MacBook-Air.local ([72.5.115.169]) (authenticated bits=0) by nagasaki.bogus.com (8.14.4/8.14.4) with ESMTP id q7FJIJA4024406 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NOT); Wed, 15 Aug 2012 19:18:20 GMT (envelope-from joelja@bogus.com)
Message-ID: <502BF5F7.9070504@bogus.com>
Date: Wed, 15 Aug 2012 12:18:15 -0700
From: joel jaeggli <joelja@bogus.com>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:15.0) Gecko/20120731 Thunderbird/15.0
MIME-Version: 1.0
To: "Manfredi, Albert E" <albert.e.manfredi@boeing.com>
Subject: Re: DAD question
References: <CALKmEuAqzAsabqs7dMBHHkBvwbAx_UVLgJGJH83-y9wHZKt6FQ@mail.gmail.com> <20120815.125627.74680163.sthaug@nethelp.no> <502B88DC.3060300@gont.com.ar> <20120815.133810.41706030.sthaug@nethelp.no> <B0147C3DD45E42478038FC347CCB65FE02BCFA4C29@XCH-MW-08V.mw.nos.boeing.com>
In-Reply-To: <B0147C3DD45E42478038FC347CCB65FE02BCFA4C29@XCH-MW-08V.mw.nos.boeing.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (nagasaki.bogus.com [147.28.0.81]); Wed, 15 Aug 2012 19:18:20 +0000 (UTC)
Cc: "ipv6@ietf.org" <ipv6@ietf.org>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/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, 15 Aug 2012 19:18:22 -0000
On 8/15/12 12:00 PM, Manfredi, Albert E wrote: > sthaug@nethelp.no wrote: > >> Globally unique. The point here is that the Ethernet standards require >> a globally unique MAC address *per box*, not necessarily per interface. >> The "Sun way" of storing a MAC address in EEPROM and configuring all >> network cards with the same MAC address was perfectly compliant, just >> somewhat unusual. > But that's not the whole story, right? > > The only way this can work is if one assumes that each interface of that box is connected to a different IP subnet. I don't even think Ethernet rules are what matters here. If the box should happen to be dual homed to the same IP subnet, that Sun scheme doesn't work. (I suppose unless only one of the box's interface is active at any given time. To be clear the employment of that scheme predates existence of routers in in small network deployments. if you need more than one interface on the same subnet you adjust them accordingly. > Bert > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- >
- DAD question Fred Baker (fred)
- Re: DAD question Jared Mauch
- Re: DAD question Fernando Gont
- Re: DAD question Ole Trøan
- Re: DAD question Bob Hinden
- Re: DAD question Dominik Elsbroek
- Re: DAD question joel jaeggli
- Re: DAD question sthaug
- Re: DAD question Mikael Abrahamsson
- Re: DAD question Fernando Gont
- Re: DAD question Fred Baker (fred)
- Re: DAD question Ole Trøan
- Re: DAD question Fred Baker (fred)
- Re: DAD question Karl Auer
- Re: DAD question sthaug
- Re: DAD question Fernando Gont
- Re: DAD question Bob Hinden
- Re: DAD question Bob Hinden
- Re: DAD question Bob Hinden
- Re: DAD question Brian E Carpenter
- Re: DAD question Michael Richardson
- Re: DAD question Bob Hinden
- Re: DAD question Randy Bush
- Re: DAD question sthaug
- Re: DAD question Duncan, Richard (Jeremy)
- Re: DAD question sthaug
- Re: DAD question Karl Auer
- Re: DAD question Carsten Bormann
- RE: DAD question STARK, BARBARA H
- Re: DAD question Francis Dupont
- Re: DAD question Fred Baker (fred)
- Re: DAD question Michael Richardson
- Re: DAD question Simon Perreault
- RE: DAD question Manfredi, Albert E
- Re: DAD question Brian E Carpenter
- Re: DAD question Daniël W. Crompton
- Re: DAD question sthaug
- Re: DAD question Fernando Gont
- Re: DAD question sthaug
- RE: DAD question Manfredi, Albert E
- RE: DAD question Manfredi, Albert E
- Re: DAD question joel jaeggli
- Re: DAD question sthaug
- RE: DAD question Manfredi, Albert E
- Re: DAD question sthaug
- RE: DAD question Karl Auer
- Re: Re: DAD question Ray Hunter