I tried to configure a tunnel in Vista today with no luck. I've run cmd as administrator, and issued the following commands:
netsh interface ipv6>add v6v4tunnel IP6Tunnel 172.16.100.100 184.108.40.206
netsh interface ipv6>add address IP6Tunnel 2001:470:1f04:fe::2
The filename, directory name, or volume label syntax is incorrect.
As you can see, the first command worked fine, the second one is giving me an issue.