qemu nic missing after F13 upgrade

[Dr. Michael J. Chudobiak]

Hi all,

after my upgrade to F13, everything is working fine except that the 
instance of WindowsXP that I run under qemu can no longer see any 
network card. It does not appear in the Windows network control panel.

If I run "ps ax | grep qemu", I see:

[root at xena qemu]# ps ax | grep qemu
  2093 ?        Rl     1:41 /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm 
-m 1024 -smp 1,sockets=1,cores=1,threads=1 -name MikeWindows -uuid 
5586f5ac-e12b-301c-7feb-cfbccf77e424 -nodefaults -chardev 
socket,id=monitor,path=/var/lib/libvirt/qemu/MikeWindows.monitor,server,nowait 
-mon chardev=monitor,mode=readline -rtc base=utc -boot c -drive 
file=/var/lib/libvirt/images/MikeWindows.img,if=none,id=drive-ide0-0-0,boot=on 
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 
-device rtl8139,vlan=0,id=net0,mac=52:54:00:3d:a7:f6,bus=pci.0,addr=0x4 
-net tap,fd=33,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device 
isa-serial,chardev=serial0 -usb -device usb-tablet,id=input0 -vnc 
127.0.0.1:0 -vga std -device 
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

How do I even debug this?

- Mike