Subj : teredo
To   : All
From : Michiel van der Vlist
Date : Tue May 31 2011 23:02:21

I am on a camping and there is Wifi. Natted of course. The signal is too weak for the PCMCIA card in the laptop and so I pick it up with a directional antenna connected to a WiFi bridge in client mode. To share it with others on te same field, I feed it to the WAN port of a wireless router. So the users that link through me are behind a double NAT.

That works for BINKP, http, POP3, smtp and other protocols. Not for Teredo.

Teredo does not work behind a double NAT.

So I eliminated the second layer of NAT by configuring the router in bridge mode. Now teredo works. My ipv6 is 2001:0:4137:9e76:0:78f8:a3b9:dc0c. It is pingable when my laoptop is on.

To my surprise I get a 10/10, 9/10 from test-ipv6.com. I expected a lower rating because Teredo s not the best of the best. I can't do an ipv6 speedtest because http://ipv6-speedtest.net/ reports that I do not have ipv6. No surprise because IE8 uses ipv4 when the ipv6 connections is via teredo.


Cheers, Michiel

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