teredo.ipv6.microsoft.com off?

Tassos Chatzithomaoglou achatz at forthnetgroup.gr
Sat Jul 13 21:39:12 CEST 2013

Thanks for the update Sander.
The following seems to have the full info.


At the same time, i'm thinking out loud...
Why would a windows application send an a request to an IPv6 DNS server over native IPv6 in order to find the IPv4 address of a server and get IPv6 over IPv4 connectivity?


Sander Steffann wrote on 12/7/2013 02:31:
> Hi,
>> Anyone found out what happened with teredo.ipv6.microsoft.com ?
>> http://translate.google.com/translate?hl=en&sl=de&u=http://www.heise.de/netze/meldung/IPv6-Tunnel-Microsofts-Teredo-Server-nicht-erreichbar-1915972.html&prev=/search%3Fq%3Dteredo%2Bmicrosoft%2Bipv6%26safe%3Doff%26sa%3DX%26biw%3D1303%26bih%3D803%26tbs%3Dqdr:w
>> Since yesterday we have quite an increase of NXDOMAIN in relevant dns requests.
>> Has Microsoft made the big step?
> Almost :-)   This is what is happening now:
>> As an attempt to "measure" the impact of this sunsetting, we would like to
>> switch off the service for a few days. Resultant feedback and telemetry will
>> help us inform the future of the Teredo service and its default configuration
>> on Windows. We intend to conduct this experiment from  approximately July 9
>> 0:0:00 UTC, to July 15 0:0:00 UTC.
> So it will come back, but it *is* the start of the sunsetting process.
> Cheers,
> Sander

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