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

Nathan Ward nanog at
Tue Feb 16 06:37:58 UTC 2010

On 16/02/2010, at 7:34 PM, Mikael Abrahamsson wrote:

> On Tue, 16 Feb 2010, Nathan Ward wrote:
>> You are very unlikely to get traffic from Teredo, because:
>> 1) Windows only asks for AAAA if it has non-Teredo IPv6 connectivity
> Please don't just say "windows" as the different versions of windows behave differently, as we've already discussed in the thread here:
> <>
> Windows XP will happily use Teredo when faced with AAAA response only.
> What you're describing is Vista and Win7 I guess?

Yep, sorry!

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

Nathan Ward

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