I meant *all* cables. From teh PC t the linux box is where you need the cable. Your network card doesnt' support promiscious mode. That's why XBox Live works, and Kai doesn't (any other tunnelling app ...
Is your network reachable?
Yes
Are you using a port-forward?
Yes
Is your console being detected?
Yes
Brief description of your network setup:
First configuration: Xbox --->wired---> ...