[Fedora-xen] networking issue

[Jon Griffin]

I am having no luck getting networking going on my FC5 box.
I am using kernel 2.6.17-1.2139 and I have xennet modprobed in both U 
and 0 domains.
I also tried adding:

alias eth0 xennet
in my xenU domain
/etc/modprobe.conf

It keeps coming back saying:
xennet device eth0 does not seem to be present....

any suggestions?

Thanks.