The problem appears to be your Intel Gigabit ether card. It may be as simple as adding support for the device id of your card - looking at the source some cards are supported, some not and yours is not listed; somone else on the list may be able to help more or you could just experiment.
To get yourself going I suggest you swap the ether card for an more boring 100Mb one, the wiki lists quite a few supported cards: http://plan9.bell-labs.com/wiki/plan9/Supported_PC_hardware/index.html -Steve
