When I attempt to start a VM with a network adapter, I get the following error message:
Failed to start the VM.
Error: Device 0 (vif) could not be connected. Could not find bridge, and none was specified.
If I delete the network adapter, then the VM starts fine. I’m running OpenSUSE 12.1 on a 64-bit laptop that is using NetworkManager in KDE4 to connect to a wireless network. To setup the VM, I clicked “Install Hypervisor and Tools” in YaST and let it setup Xen, KVM, and a network bridge. I rebooted into the Xen kernel and then clicked “Create Virtual Machines” in YaST and stuck with all of the defaults.
I apologize if this has been answered before - it seems like it should be a common question, but hours of searching hasn’t turned up anyone doing the same thing that I am.