I have a desktop and a laptop. They are both plugged into a router. Both have an internet connection that works fine, and the other day I decided to share a printer. I ran the network setup wizard in XP on both comptuters, and made sure file and printer sharing was on. The laptop could see itself, and it appeared under network places on the desktop. The desktop could not be seen from the laptop or from its own 'Network Places'. At first, I assumed it was a firewall. I turned off all firewalls on both computers. THis didn't solve the problem. I tried to turn off the Anti-virus on both, but that did nothing. On the desktop, when I do IP config, I get some really strange stuff printed out: Ethernet adapter LAN IP : 192.168.0.10 IP : fe80:ffff:ffff:fffd%5 (what is this mean, and why is it here twice???) Default Gateway: 192.168.0.2 Tunnel Adapter Automatic Tunneling Pseudo Interface IP Address: fe80:5efe:192.168.0.10%2 I'm not sure what this means, can someone explain it?

One mistake that people make is to turn off firewall. You should never do that if connected to the internet. Configure instead for shares or troubleshoot offline. Keep firewalls on. You will be back with many other issues if you don't. No need to fear just yet. IPv6 has that goofy setup. Your system may have IPv6 dhcp support for clients. Why do you have a tunnel running? Does this use a connection to a server at work? That is my guess of your problem. I read it wrong and answer it wrong too. So get off my case you goober.

thanks for the reply. To answer your question, I don't know why I have a tunnel running. No, the setup I have has no use for a 'Tunnel' to work, and I have not even tried to setup a connection to work from my home. When I hear tunnel, I think VPN. But again, I have not tried to set up a VPN, and I definitely don't have a need for one.

RobRem, You or someone enabled ipv6 on your machine "c:\ ipv6 install", fe80 is a link local prefix and can not be routed. The tunnel-pseudo interface comes up by default but is not actually tunneling yet because the teredo server has not be defined. To make it go away - type c:\ netsh interface ipv6 set teredo disable, or, c:\ ipv6 uninstall will take it all away.