I think I have a solution:
In the guests' XML files, I set a target device name so they will always use a known device (Instead of getting an aribtrary vnet* device).
Next, using snmp on the host, I can get the interface stats for that device and use cacti to graph it.
Thanks to everyone for the help, Neil
-- Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com Will your e-commerce site go offline if you have a DB server failure, fiber cut, flood, fire, or other disaster? If so, ask about our geographically redundant database system.