Re: [v6ops] new draft: draft-colitti-v6ops-host-addr-availability

"Fred Baker (fred)" <fred@cisco.com> Tue, 07 July 2015 20:49 UTC

Return-Path: <fred@cisco.com>
X-Original-To: v6ops@ietfa.amsl.com
Delivered-To: v6ops@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 27BEB1A90ED for <v6ops@ietfa.amsl.com>; Tue, 7 Jul 2015 13:49:28 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -114.511
X-Spam-Level:
X-Spam-Status: No, score=-114.511 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_DEF_DKIM_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=ham
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 Azgu1xZ__3ka for <v6ops@ietfa.amsl.com>; Tue, 7 Jul 2015 13:49:27 -0700 (PDT)
Received: from rcdn-iport-7.cisco.com (rcdn-iport-7.cisco.com [173.37.86.78]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 6B5BB1ACD98 for <v6ops@ietf.org>; Tue, 7 Jul 2015 13:48:04 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2116; q=dns/txt; s=iport; t=1436302084; x=1437511684; h=from:to:cc:subject:date:message-id:references: in-reply-to:mime-version; bh=o6Qq7Sp+xa1+BXon5CyGC8eXO73xNtAeeLcO6tcSse8=; b=QRnIfrwgz1OprcKCvGIBFzO4Z7ubfOiJxgnmyo6mqU2mCI7HsaQrAX3C ctXs22ot7oj0ElmO6i4dGPLM3SpQ9PJ1I4AZZGdv6QcU9X+KXs4B9CZyQ v3RQkzrqHONAi5Bve+K5TY9xTysa4B2EZOb/k+fXveKDH79wZwffe7m7l 8=;
X-Files: signature.asc : 833
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: A0CaAwDdOZxV/5ldJa1bgxKBNAa9ZwmHZgKBYTgUAQEBAQEBAYEKhCMBAQEDAXkFCwIBCBguIRElAgQOBQ6ICwMKCMclDYVmAQEBAQEBAQEBAQEBAQEBAQEBAQEBF4tLgk2COQeDF4EUAQSUGAGCKoFShgeBZZE9hx0mggwcgVNvAYFGgQQBAQE
X-IronPort-AV: E=Sophos; i="5.15,426,1432598400"; d="asc'?scan'208"; a="7788630"
Received: from rcdn-core-2.cisco.com ([173.37.93.153]) by rcdn-iport-7.cisco.com with ESMTP; 07 Jul 2015 20:48:03 +0000
Received: from xhc-aln-x03.cisco.com (xhc-aln-x03.cisco.com [173.36.12.77]) by rcdn-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id t67Km3lu002147 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 7 Jul 2015 20:48:03 GMT
Received: from xmb-rcd-x09.cisco.com ([169.254.9.49]) by xhc-aln-x03.cisco.com ([173.36.12.77]) with mapi id 14.03.0195.001; Tue, 7 Jul 2015 15:48:03 -0500
From: "Fred Baker (fred)" <fred@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Thread-Topic: [v6ops] new draft: draft-colitti-v6ops-host-addr-availability
Thread-Index: AQHQuPY3BHauQbVBCEu6ODF/i9HGsQ==
Date: Tue, 7 Jul 2015 20:48:03 +0000
Message-ID: <3014DAAD-757C-41E1-893F-CA5242BB3FD7@cisco.com>
References: <201507061147.t66Bl1AE028312@irp-lnx1.cisco.com> <9290D0D1-062A-4DE0-A437-9A5F5045ACAC@gmail.com> <39F63B55-977F-4B84-8B55-52E2F0B1A851@cisco.com> <75B6FA9F576969419E42BECB86CB1B89168B353B@xmb-rcd-x06.cisco.com> <559C394D.5090902@gmail.com>
In-Reply-To: <559C394D.5090902@gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
x-originating-ip: [10.19.64.123]
Content-Type: multipart/signed; boundary="Apple-Mail=_1E3CFA34-9FB1-4A45-BB30-6547E7CF479D"; protocol="application/pgp-signature"; micalg=pgp-sha1
MIME-Version: 1.0
Archived-At: <http://mailarchive.ietf.org/arch/msg/v6ops/2_7Dq3i_ICFAZhY9JA0E2Dbk_WY>
Cc: "draft-colitti-v6ops-host-addr-availability@tools.ietf.org" <draft-colitti-v6ops-host-addr-availability@tools.ietf.org>, "v6ops@ietf.org" <v6ops@ietf.org>
Subject: Re: [v6ops] new draft: draft-colitti-v6ops-host-addr-availability
X-BeenThere: v6ops@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
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: <https://mailarchive.ietf.org/arch/browse/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: Tue, 07 Jul 2015 20:49:28 -0000

> On Jul 7, 2015, at 1:40 PM, Brian E Carpenter <brian.e.carpenter@gmail.com>; wrote:
> 
> On 08/07/2015 04:27, Hemant Singh (shemant) wrote:
> ...
>> 4. Section 7.  SLAAC as defined in RFC4862 supports only one IPv6 global address if one prefix is advertised in the RA to the host.
> 
> It does? I don't see anything in 4862 that prevents a host from generating N separate
> IIDs and performing SLAAC N times for the same prefix. Now we are getting rid
> of Modified EUI-64 as the default IID, that becomes an obvious thing to do.

Well, yes, but the present algorithm starts from the MAC address on an interface. There's only one such MAC address on any given interface. To do what you said, we need to (see a certain draft) change that algorithm.