Ubuntu 10.04 Server Not Responding?

[Cooldood]

Hi. I would like to start off with this: I love your service. It is the best. I have one problem though. I recently installed Ubuntu 10.04 Server Edition as my Desktop was putting way too much load on my server. I used the command: pptp tserv8.dal1.ipv6.he.net user MYUSERNAME password MYPASSWORD noauth lock. Now, when I do this, it will not respond. Can anyone help me? I tried to use the tutorial at http://www.tunnelbroker.net/forums/index.php?topic=1004.0, but wanted to do this instead because of other issues. Also, when I look at my VPN status at the "Tunnel Details", it says it's up but it's not responding. Everything works on the localhost, but not throughout the internet. I have done numerous fresh installs of my operating system, but it still won't work.

Any ideas?
Thanks.