Re: [v6ops] I-D Action: draft-ietf-v6ops-nat64-experience-04.txt

Mikael Abrahamsson <swmike@swm.pp.se> Wed, 20 November 2013 08:09 UTC

Return-Path: <swmike@swm.pp.se>
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 7CEFE1AE0EA for <v6ops@ietfa.amsl.com>; Wed, 20 Nov 2013 00:09:12 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.076
X-Spam-Level:
X-Spam-Status: No, score=-2.076 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_SE=0.35, RP_MATCHES_RCVD=-0.525, SPF_PASS=-0.001] 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 pNJFkDEMFaF4 for <v6ops@ietfa.amsl.com>; Wed, 20 Nov 2013 00:09:10 -0800 (PST)
Received: from uplift.swm.pp.se (ipv6.swm.pp.se [IPv6:2a00:801::f]) by ietfa.amsl.com (Postfix) with ESMTP id 656761AC4C1 for <v6ops@ietf.org>; Wed, 20 Nov 2013 00:09:10 -0800 (PST)
Received: by uplift.swm.pp.se (Postfix, from userid 501) id 24748A1; Wed, 20 Nov 2013 09:09:01 +0100 (CET)
Received: from localhost (localhost [127.0.0.1]) by uplift.swm.pp.se (Postfix) with ESMTP id 1E9E29A; Wed, 20 Nov 2013 09:09:01 +0100 (CET)
Date: Wed, 20 Nov 2013 09:09:01 +0100
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: holger.metschulat@telekom.de
In-Reply-To: <AFAB9759B1DE4F4187483FC509B501990116996E9FB3@HE111490.emea1.cds.t-internal.com>
Message-ID: <alpine.DEB.2.02.1311200904140.1157@uplift.swm.pp.se>
References: <97EB7536A2B2C549846804BBF3FD47E1237E18A6@xmb-aln-x02.cisco.com> <alpine.DEB.2.02.1311050329470.26054@uplift.swm.pp.se> <97EB7536A2B2C549846804BBF3FD47E1237E1941@xmb-aln-x02.cisco.com> <CAM+vMES=xhq7VF8SvqEZEz3ZCRN8p1zWiabkNnU6ucKVya6KQQ@mail.gmail.com> <6536E263028723489CCD5B6821D4B21303A137B3@UK30S005EXS06.EEAD.EEINT.CO.UK> <20131108172730.GM81676@Space.Net> <alpine.DEB.2.02.1311090926500.26054@uplift.swm.pp.se> <20131109132552.GQ81676@Space.Net> <6536E263028723489CCD5B6821D4B21303A157F2@UK30S005EXS06.EEAD.EEINT.CO.UK> <CAM+vMET6mqVQOm4GVnfkvNEGYuVSvTBVnrPOgFvj86Kmx8rnfw@mail.gmail.com> <20131111145452.GF81676@Space.Net> <AFAB9759B1DE4F4187483FC509B50199011699555191@HE111490.emea1.cds.t-internal.com> <alpine.DEB.2.02.1311140756400.5805@uplift.swm.pp.se> <AFAB9759B1DE4F4187483FC509B501990116996E9FB3@HE111490.emea1.cds.t-internal.com>
User-Agent: Alpine 2.02 (DEB 1266 2009-07-14)
Organization: People's Front Against WWW
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset="US-ASCII"; format="flowed"
Cc: v6ops@ietf.org
Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-nat64-experience-04.txt
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: <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, 20 Nov 2013 08:09:12 -0000

On Wed, 20 Nov 2013, holger.metschulat@telekom.de wrote:

> I agree, but are there any other choices?

We could provide the problem case and have "someone" develop standards to 
fix it? I think it's a pretty common case going forward that the network 
supports a combination of IPv4, DS and IPv6 devices being connected even 
to a wifi network or LAN (not necessarily mobile). Then one doesn't have 
the choice to have different APNs.

One way would be to have a recommendation to detect NAT64 and then detect 
NAT44, and in the case of both being present, prefer one of them 
consistently?

Hardest case to handle would be GUA IPv4 and IPv6 with NAT64, then there 
would have to be heuristics to actively detect the DNS64 doing A->AAAA and 
not use the AAAA pointing to the NAT64 prefix, but instead use A records 
for those.... if that's what we want.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se