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

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Date: Wed, 20 Nov 2013 09:09:01 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: holger.metschulat@telekom.de
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Cc: v6ops@ietf.org
Subject: Re: [v6ops] I-D Action: draft-ietf-v6ops-nat64-experience-04.txt
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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