Also works from here - 2001:630:301:1080:219:d1ff:fe9a:f245 -
Loughborough University, no tunnels, all native IPv6:
[ccgef@squonk ~]$ telnet tahini.csx.cam.ac.uk 80
Trying 2001:630:200:8080:204:23ff:fed6:b664...
Connected to tahini.csx.cam.ac.uk.
Escape character is '^]'.
HEAD / HTTP/1.0
HTTP/1.1 200 OK
Date: Mon, 06 Sep 2010 09:12:48 GMT
Server: Apache/2.2.3 (Linux/SUSE)
Connection: close
Content-Type: text/html; charset=UTF-8