Re: IPv6 only host NAT64 requirements?
Philip Homburg <pch-ipv6-ietf-4@u-1.phicoh.com> Mon, 13 November 2017 16:16 UTC
Return-Path: <pch-bCE2691D2@u-1.phicoh.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 31189129AF9 for <ipv6@ietfa.amsl.com>; Mon, 13 Nov 2017 08:16:35 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9] autolearn=ham autolearn_force=no
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 sEiN7NMj9yx4 for <ipv6@ietfa.amsl.com>; Mon, 13 Nov 2017 08:16:34 -0800 (PST)
Received: from stereo.hq.phicoh.net (stereo6-tun.hq.phicoh.net [IPv6:2001:888:1044:10:2a0:c9ff:fe9f:17a9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 980FC1200F1 for <ipv6@ietf.org>; Mon, 13 Nov 2017 08:16:33 -0800 (PST)
Received: from stereo.hq.phicoh.net (localhost [::ffff:127.0.0.1]) by stereo.hq.phicoh.net with esmtp (TLS version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384) (Smail #157) id m1eEHPS-0000FyC; Mon, 13 Nov 2017 17:16:30 +0100
Message-Id: <m1eEHPS-0000FyC@stereo.hq.phicoh.net>
To: ipv6@ietf.org
Subject: Re: IPv6 only host NAT64 requirements?
From: Philip Homburg <pch-ipv6-ietf-4@u-1.phicoh.com>
Sender: pch-bCE2691D2@u-1.phicoh.com
References: <m1eEGbJ-0000EhC@stereo.hq.phicoh.net> <D43E103C-27B8-48CF-B801-ACCF9B42533E@employees.org>
In-reply-to: Your message of "Mon, 13 Nov 2017 23:35:43 +0800 ." <D43E103C-27B8-48CF-B801-ACCF9B42533E@employees.org>
Date: Mon, 13 Nov 2017 17:16:29 +0100
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/cpA2WTC3P5rhde5ZUh-s3JgXPUM>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.22
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: <https://mailarchive.ietf.org/arch/browse/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: Mon, 13 Nov 2017 16:16:35 -0000
>Yes, that's certainly the bind we are in. Are we going to require all >IPv6 only nodes to be able to communicate with IPv4? And what does that >entail? Do you have examples of "all kinds of IPv4 issues"? > >Apart from the requirement of NAT64 prefix discovery and IPv4 >synthesising, is there anything you don't need to do anyway? One that really breaks my code, and is relevant to 6man is the guarantee in IPv6 error ICMPs: (c) Every ICMPv6 error message (type < 128) MUST include as much of the IPv6 offending (invoking) packet (the packet that caused the error) as possible without making the error message packet exceed the minimum IPv6 MTU >While I'm also concerned about the consequences of carrying IPv4 debt in >all IPv6 implementations, the alternative seems to be that we are stuck >with Dual stack forever (for some definition of forever). This would at >least allow us to move to single stack IPv6. Which appears to me to be a >step forward. And we're very close to that already, and there are >millions of devices already implementing it. In new applications that are simple from a networking point of view, it should be possible to come up with a design that works well for both dual stack and NAT64. Operators who have lots of legacy devices are likely to run a dual stack network. So hosts that are expected to work in such an environment have to implement dual stack. I'm not sure how (outside 3GPP) anyone can transition to NAT64. You have to make sure that all devices that need to connect support NAT64. To do that, you probably want to run dual stack for a while to make sure everything supports IPv6 properly. But for host software there is a lot more incentive to support dual stack then to do the extra step for NAT64. The big problem I see for NAT64 is that for old IPv4-only applications you have to make two fundamental changes to the application. The first to make sure that the application handles IPv6 in every possible way. And a second pass that makes sure that every place where an IPv4 address literal is handled, works with NAT64. For an application writer it is better to try to avoid doing the second pass.
- IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Tim Chown
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Rajiv Asati (rajiva)
- Re: IPv6 only host NAT64 requirements? Tim Chown
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Lorenzo Colitti
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- IPv4 only apps [was: IPv6 only host NAT64 require… Brian E Carpenter
- Re: IPv4 only apps [was: IPv6 only host NAT64 req… Ole Troan
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv4 only apps [was: IPv6 only host NAT64 req… Brian E Carpenter
- Re: IPv4 only apps [was: IPv6 only host NAT64 req… Ole Troan
- Re: IPv6 only host NAT64 requirements? Michael Richardson
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Philip Homburg
- Re: IPv6 only host NAT64 requirements? Michael Richardson
- Re: IPv6 only host NAT64 requirements? Lorenzo Colitti
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: IPv6 only host NAT64 requirements? Erik Kline
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? james woodyatt
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? james woodyatt
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? james woodyatt
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? james woodyatt
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- PCP, and 6434bis (was Re: IPv6 only host NAT64 re… Tim Chown
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Ca By
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Tim Chown
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Ca By
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… james woodyatt
- Re: IPv6 only host NAT64 requirements? Michael Richardson
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Michael Richardson
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… james woodyatt
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Mark Andrews
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: IPv6 only host NAT64 requirements? Fred Baker
- Re: IPv6 only host NAT64 requirements? Fred Baker
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Tim Chown
- Re: IPv6 only host NAT64 requirements? james woodyatt
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: PCP, and 6434bis (was Re: IPv6 only host NAT6… Fernando Gont
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Mikael Abrahamsson
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Simon Hobson
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Mikael Abrahamsson
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Mikael Abrahamsson
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Ole Troan
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- Re: IPv6 only host NAT64 requirements? Ole Troan
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Michael Richardson
- Re: IPv6 only host NAT64 requirements? Alexandre Petrescu
- Re: IPv6 only host NAT64 requirements? Ole Troan
- RE: IPv6 only host NAT64 requirements? mohamed.boucadair
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- RE: IPv6 only host NAT64 requirements? Manfredi, Albert E
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- RE: IPv6 only host NAT64 requirements? Manfredi, Albert E
- Re: IPv6 only host NAT64 requirements? Lee Howard
- Re: IPv6 only host NAT64 requirements? Lee Howard
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Ole Troan
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Mark Andrews
- RE: IPv6 only host NAT64 requirements? Masanobu Kawashima
- Re: IPv6 only host NAT64 requirements? Mikael Abrahamsson
- Re: IPv6 only host NAT64 requirements? Mikael Abrahamsson
- Re: IPv6 only host NAT64 requirements? Jen Linkova
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Ola Thoresen
- Re: IPv6 only host NAT64 requirements? JORDI PALET MARTINEZ
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter
- Re: IPv6 only host NAT64 requirements? Alexandre Petrescu
- Re: IPv6 only host NAT64 requirements? Ca By
- Re: IPv6 only host NAT64 requirements? Brian E Carpenter