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Re: Denic (.de) blocking 6to4 nameservers (since begin feb 2010)

daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Tue Feb 16 01:47:34 2010

Date: Tue, 16 Feb 2010 07:47:03 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: nanOG list <nanog@nanog.org>
In-Reply-To: <8F0F75CE-D5BE-4C83-B8EA-50F602932BC7@daork.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On Tue, 16 Feb 2010, Nathan Ward wrote:

> XP won't ask for AAAA unless it has non-Teredo connectivity though I don't think.

That doesn't compute considering all the XP machines with Teredo addresses 
that asked for my AAAA only content.

<http://www.ops.ietf.org/lists/v6ops/v6ops.2008/msg01582.html>

"Of the users getting v6 only gif from non-tunnel-space, 58% were from 
Proxad (free.fr I believe), and then on the list came UNINET, SUNET, FUNET 
(university networks in .no, .se and .fi) and Hurricane electric.

98% of Teredo users run Windows XP.
88% of 6to4 users run Windows Vista."

So 98% of Teredo users getting the v6only content (using DNS) was using 
WinXP, so it does seem it does AAAA lookups.

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


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