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Re: Follow-up work on NAT-PT
I'm a bit concerned about how solution-space-focused this discussion has been, especially when it is my understanding that we probably won't specify a solution in the v6ops WG.
Exactly what types of operational problems exist that we need to solve? Why aren't the existing v4/v6 transition mechanisms sufficient to resolve those problems? Where are the gaps that needs to be filled?
I really have no doubt that we could build a purer, cooler, "better" version of NAT-PT. In fact, I even have my own thoughts on how we could do that. But without understanding exactly what problem(s) we are trying to solve, I don't think that will be a very useful exercise. 

Margaret


On Oct 28, 2007, at 7:48 PM, Brian E Carpenter wrote:


On 2007-10-14 06:28, Jari Arkko wrote:

Thanks for this, Olaf. Indeed, we are considering follow-up work,
and understanding the scenarios & possible need for producing
a revised version of NAT-PT is on the Vancouver agenda (currently
planned to be a discussion in V6OPS, with protocol work to fall
out to an INT area WG).


I realise this may be jumping the gun a bit, but since I won't be
in Vancouver, here is a sketch of one possible direction.

    Brian

-------- Original Message --------
Subject: I-D Action:draft-carpenter-shanti-00.txt
Date: Sun, 28 Oct 2007 18:20:01 -0400
From: Internet-Drafts@ietf.org
Reply-To: internet-drafts@ietf.org
To: i-d-announce@ietf.org
A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Shimmed IPv4/IPv6 Address Network Translation Interface (SHANTI) 
	Author(s)       : B. Carpenter
	Filename        : draft-carpenter-shanti-00.txt
	Pages           : 12
	Date            : 2007-10-28

There is a pragmatic need for a packet-level translation mechanism
between IPv4 and IPv6, for scenarios where no other mode of IPv4 to
IPv6 interworking is possible.  The mechanism defined here uses a
shim in both the translator and the IPv6 host to mitigate the
problems introduced by stateless translation.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-carpenter-shanti-00.txt