Ran across this problem recently. Below attached worked for me on a
reboot. Still gathering “low level linux administration expertise”
here. Would one alternative to the modprobe.conf be to recompile the
domU kernel such that it needs no such modprobe entry?
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The problem here is that you need to add the following to your
modprobe.conf of your domU:
alias eth0 xennet
Adding this line will load the driver for your fc5 domU. Redhat compiles
the xennet driver as a module. So you have to load that module to see
the interface.