Andi: What I'd meant was if it wants a connection, give it one; much in the same way you can take a standalone PC and give it a static IP, you could (/should be able to) do the same with the 770. If Opera tries hitting your local webserver and sees the 770 has an IP of 192.168.0.1, that might make it happy.

Obviously that'd only be a bandaid solution, having zero internet connectivity while using a local web server would be a pain in some instances.

I haven't tried it, but creating an ad-hoc connection with a static IP in connection manager oughtta do it.