IETF Logo Mail Archive

Re: [v6ops] draft-ietf-v6ops-64share

Mark Smith <markzzzsmith@yahoo.com.au> Wed, 23 January 2013 18:41 UTC

Return-Path: <markzzzsmith@yahoo.com.au>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id EC60A21F85D9 for <v6ops@ietfa.amsl.com>; Wed, 23 Jan 2013 10:41:40 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.499
X-Spam-Level:
X-Spam-Status: No, score=-1.499 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, FROM_LOCAL_NOVOWEL=0.5, J_CHICKENPOX_13=0.6]
Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GMiK-w9WyTCH for <v6ops@ietfa.amsl.com>; Wed, 23 Jan 2013 10:41:40 -0800 (PST)
Received: from nm14.bullet.mail.bf1.yahoo.com (nm14.bullet.mail.bf1.yahoo.com [98.139.212.173]) by ietfa.amsl.com (Postfix) with SMTP id 3D29D21F86BE for <v6ops@ietf.org>; Wed, 23 Jan 2013 10:41:40 -0800 (PST)
Received: from [98.139.212.148] by nm14.bullet.mail.bf1.yahoo.com with NNFMP; 23 Jan 2013 18:41:39 -0000
Received: from [98.139.215.249] by tm5.bullet.mail.bf1.yahoo.com with NNFMP; 23 Jan 2013 18:41:39 -0000
Received: from [127.0.0.1] by omp1062.mail.bf1.yahoo.com with NNFMP; 23 Jan 2013 18:41:39 -0000
X-Yahoo-Newman-Property: ymail-3
X-Yahoo-Newman-Id: 674764.39560.bm@omp1062.mail.bf1.yahoo.com
Received: (qmail 38315 invoked by uid 60001); 23 Jan 2013 18:41:39 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com.au; s=s1024; t=1358966499; bh=hhbAcq7k2RTpmtk83uSCR+pzNZtC+/dBTyAWUN48gtQ=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=HpfRbcOIT7+kzEsP+VH0u0IffCYRDFOJYupxXbpRfYbZztfnRsw8H0eCIv0qy20WNw5/9xYBQQG1Cvu8jatlWCD1VLGmX56ZYLUzzAD9zYHS4wk1ORBoM5od1Bgpk17apBLZoN26RPRZXYlwhkPmSE4wftNP2NTVuyQG0npV6R4=
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=iUcsOBFxZ3mIa+tmWf2cNxM6hVWsGnE0WAuhTeBB1nMP1eXQ5Yb8NSpiVHqpHWGGWnx20fiCY8+lQ/khrtnVLUghB2swWpDOIEVI496nvzj+2gfUmXkzIIwUpdgyq4Td0h6zrBRGl4s25GNGzqDtv8Ab6oWViagPtpbAMCJEvMM=;
X-YMail-OSG: O5KkvFAVM1mJTIZYrGoe93i6gEX4FbZCOtTSh2J1qKzHI0_ oCsfSNx_UrkvYM8CttC.upCGxdEMtYT1Oski8sK0GJLXAgwvdS6Dn3CcsF9p vz1sgfUfTAZA8lGo2XeyO_2Vb2XQaQuM1wNpGvwyvWttKHyH_gbgalJv5kds 2CK2KGBSMOC89KlKZRz3nNWOCw_EqeGoIXxEhz23vv1wWQ_jk136XQ2wXUUr 5qukI9EsVUkuq5aGGOufq5pviMK3uFYtoYFhaBO9pU7qZmIrHBMoHextXbmL CStvCdGCwRhHraD.DPXgXmg0uusSYZiSZOZasvBii8BkrAHywdNAacz5H6l2 Y51IAYpb2jNOAgJE4nrHLCQobwYu4zS2rOGHDhov6dhdHoSH87_rbsc03gD5 rUunEpI5WSus8GOZPwxhduFiVzrd5Y.RnGC1ii4jbsioF1IrFG14qozQ52wO ey5A5HeiVuXh6eu6lOA4d0b3onijGwD1eP6_r0Ct52..5hfaHwNW7RcqcOVb 8nfBNO3XdY2uulkdYRsbuHbwa
Received: from [150.101.221.237] by web142506.mail.bf1.yahoo.com via HTTP; Wed, 23 Jan 2013 10:41:39 PST
X-Rocket-MIMEInfo: 001.001, CkhpIENhbWVyb24sCgo.X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KPiBGcm9tOiBDYW1lcm9uIEJ5cm5lIDxjYi5saXN0NkBnbWFpbC5jb20.Cj5UbzogTWFyayBTbWl0aCA8bWFya3p6enNtaXRoQHlhaG9vLmNvbS5hdT4gCj5DYzogdjZvcHMgdjZvcHMgV0cgPHY2b3BzQGlldGYub3JnPiAKPlNlbnQ6IE1vbmRheSwgMjEgSmFudWFyeSAyMDEzIDQ6MDcgQU0KPlN1YmplY3Q6IFJlOiBbdjZvcHNdIGRyYWZ0LWlldGYtdjZvcHMtNjRzaGFyZQo.IAo.Cj5NYXJrLAo.SnVzdCBvbiB0aGUgdGhpcyABMAEBAQE-
X-Mailer: YahooMailWebService/0.8.130.494
References: <CAD6AjGSEOva1RzDXJqmstFk=13JnPUSWM9rQ3PmXCXPQQwcBDQ@mail.gmail.com> <1358681491.98785.YahooMailNeo@web142502.mail.bf1.yahoo.com> <CAD6AjGRFh1ZrnHpFqbaaOWVFQ-L7NHaW1H8PkV==uJVoBqLCZQ@mail.gmail.com>
Message-ID: <1358966499.33291.YahooMailNeo@web142506.mail.bf1.yahoo.com>
Date: Wed, 23 Jan 2013 10:41:39 -0800
From: Mark Smith <markzzzsmith@yahoo.com.au>
To: Cameron Byrne <cb.list6@gmail.com>
In-Reply-To: <CAD6AjGRFh1ZrnHpFqbaaOWVFQ-L7NHaW1H8PkV==uJVoBqLCZQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Cc: v6ops v6ops WG <v6ops@ietf.org>
Subject: Re: [v6ops] draft-ietf-v6ops-64share
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
Reply-To: Mark Smith <markzzzsmith@yahoo.com.au>
List-Id: v6ops discussion list <v6ops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/v6ops>, <mailto:v6ops-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/v6ops>
List-Post: <mailto:v6ops@ietf.org>
List-Help: <mailto:v6ops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/v6ops>, <mailto:v6ops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Jan 2013 18:41:41 -0000

Hi Cameron,

>________________________________
> From: Cameron Byrne <cb.list6@gmail.com>
>To: Mark Smith <markzzzsmith@yahoo.com.au> 
>Cc: v6ops v6ops WG <v6ops@ietf.org> 
>Sent: Monday, 21 January 2013 4:07 AM
>Subject: Re: [v6ops] draft-ietf-v6ops-64share
> 
>
>Mark,
>Just on the this one topic
><Snip>
>> Actually, reviewing the IPv6 Addressing Model in RFC4291, it says, "An IPv6 unicast address refers to a single interface." 
>>
>Should we explicitly call it anycast then? Is that worth noting in the draft, citing  tools.ietf.org/html/rfc4291#section-2.6

While I think what you're doing could qualify as anycast, as the above text says, anycast addresses have to be flagged as anycast addresses -

"the nodes to which the address is
   assigned must be explicitly configured to know that it is an anycast
   address."

That influences ND operation for the anycast address - the first ND NA response received after a ND NS is the one accepted, rather than the last, and Duplicate Address Detection is switched off for the anycast address. If my understanding is correct, the latter defeats one of the main motivations for duplicating the address on the 3GPP and LAN interfaces in your scenario in the first place.

ND NS/NA handling anycast text
https://tools.ietf.org/html/rfc4861#section-7.2.7



ND anycast DAD text
https://tools.ietf.org/html/rfc4862#section-5.4



Regards,
Mark.

v2.23.0 | Report a Bug | By Email