pcnet32 device eth0 does not seem to be present, delaying initialization

["Jonathan M. McCune" <jonmccune@cmu.edu>]

Hi,

I'm trying to bring up an HVM guest with networking support, but I 
cannot get the guest to recognize an ethernet interface.  The guest is 
rhel5, and I'm running Debian linux dom0 on top of xen-unstable-hvm 
changeset 8724.

Running `/etc/init.d/networking restart` gives:

Shutting down loopback interface:                          [  OK  ]
Setting network parameters:                                [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:  pcnet32 device eth0 does not seem to be 
present, delaying initialization.
                                                           [FAILED]

I have tried several stock 2.4 redhat kernels, and I have built a 2.6.12 
kernel and taken care to include the pcnet32 driver.  The config file 
for the guest domain contains the line:

vif = ['']

`lspci` inside the guest does not show any ethernet interface.

I'm not sure what to do to enable networking. 

Thanks,
-Jon