[fedora-virt] qemu-kvm nic gone after upgrade to F13

Dr. Michael J. Chudobiak mjc at avtechpulse.com
Thu May 27 17:30:20 UTC 2010

Hi all,

I had an instance of WindowsXP running just fine in F12, with "vanilla" 
settings (standard networking). After upgrading to F13, no NIC is shown 
in XP any more.

I can run my VM manually, with working networking, if I use:
qemu-kvm -hda /var/lib/libvirt/images/MikeWindows.img -net nic -net user

If I try to run this image via virt-manager, the NIC vanishes. Oddly, 
the qemu-kvm process does not show a "-net nic" parameter - just a 
"-device rtl8139" flag:

[root at xena mjc]# ps ax | grep qemu
  4778 ?        Sl     0:30 /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 
-mon chardev=monitor,mode=readline -rtc base=utc -boot c -drive 
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 
-device rtl8139,vlan=0,id=net0,mac=52:54:00:20:ee:f2,bus=pci.0,addr=0x4 
-net tap,fd=35,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device 
isa-serial,chardev=serial0 -usb -device usb-tablet,id=input0 -vnc -vga std -device 

What's gone wrong? Config files are below.

- Mike

   <bridge name="virbr0" />
   <ip address="" netmask="">
       <range start="" end="" />

<domain type='kvm'>
     <type arch='x86_64' machine='pc-0.11'>hvm</type>
     <boot dev='hd'/>
   <clock offset='utc'/>
     <disk type='file' device='disk'>
       <driver name='qemu'/>
       <source file='/var/lib/libvirt/images/MikeWindows.img'/>
       <target dev='hda' bus='ide'/>
       <address type='drive' controller='0' bus='0' unit='0'/>
     <controller type='ide' index='0'>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x01' 
     <interface type='network'>
       <mac address='52:54:00:20:ee:f2'/>
       <source network='default'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x04' 
     <serial type='pty'>
       <target port='0'/>
     <console type='pty'>
       <target port='0'/>
     <input type='tablet' bus='usb'/>
     <input type='mouse' bus='ps2'/>
     <graphics type='vnc' port='-1' autoport='yes'/>
       <model type='vga' vram='16384' heads='1'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 

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