Teredo sunset - did it happen?

Darren Pilgrim list_ipv6-ops at bluerosetech.com
Mon Nov 17 18:43:50 CET 2014

On 11/17/2014 7:06 AM, Phil Mayers wrote:
> All,
> ISTR that Teredo was going to be sunset, Microsoft having tested
> removing the DNS name "teredo.ipv6.microsoft.com".
> (Ignoring the Xbox One stuff here - just the windows desktop
> server/relay stuff)
> However, my Windows 7 machine is still resolving that name and forming a
> Teredo address, and setting an IPv6 default route via that tunnel - I
> can see Teredo-encap'd router-solicit and router-advert messages being
> sent and received.
> No traffic flows however - the Teredo "direct connect" tests are all
> failing (no reply to the ICMPv6 echo). So I've got a broken IPv6 tunnel :o/
> Any ideas what's going on? Microsoft, anyone care to comment?

Microsoft released an Windows Update for the prefix policy table.  The 
update dropped Teredo's precedence to lower than IPv4.

More information about the ipv6-ops mailing list