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

Mikael Abrahamsson swmike at
Tue Feb 16 07:14:13 UTC 2010

On Tue, 16 Feb 2010, Nathan Ward wrote:

> Perhaps they have Teredo and 6to4, and could not reach you via 6to4 so 
> instead used Teredo, or, any number of scenarios.

I think their only IPv6 connectivity was Teredo (for instance, they're 
behind NAT), and thus they used it to get the IPv6 only content.

Mikael Abrahamsson    email: swmike at

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