Subj : Teredo
To   : Markus Reschke
From : Michiel van der Vlist
Date : Thu Nov 07 2013 22:33:32

Hello Markus,

On Thursday November 07 2013 14:10, you wrote to me:

 MvdV>> Plus that - correct me if I am wrong - it is my understanding that
 MvdV>> Teredo does not work from behind double NAT.

 MR> AFAIK it doesn't support symmetric NAT.

Indeed, it does not.

 MR> So double NAT might work based on the NAT methods used by the
 MR> firewalls/routers.

I just did a few tests with my laptop that has a 3G broadband interface. The connection is IPv4 only. When I make a connection I get an address in the 100.64.0.0/10 range. So I am behind a CGNAT.

I also get an IPv6 address in the Teredo range. But it does not work. The IPv6 test say I have no IPv6. I can not ping test6.vlist.eu or wrt6.vlist.eu. The Teredo address is not pingable from my fixed broadband connection.

Forget about Teredeo. It is not reliable.


Cheers, Michiel

--- GoldED+/W32-MINGW 1.1.5-b20110320
 * Origin: 2001:470:1f15:1117::1 (2:280/5555)

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