Description of problem: 
After host restart, guest Windows XP VMs either do not restart completely or do not connect to the default virtual network properly. This started happening on Fedora 12 when libvirt was upgraded from 7.6 to 8.2. Fedora 13 has the same symptoms.


Version-Release number of selected component (if applicable): 
libvirt 0.8.2-1.fc13

How reproducible: 
This fails every time the guest has not been completely shut down before the host is shut down and restarted.


Steps to Reproduce:
1. Leave VM running
2. Restart Host
3. Try to connect to host with rdesktop or logon using built-in VNC console and try to use network
  
Actual results: 
Sometimes the VM does not completely start it seems. More often, the VM starts but does not have network connectivity

Expected results: 
VM should start up and have full network connectivity.

Additional info:
Works as expected if the VM has been completely shut down.

This is a Lenovo Thinkpad with VT hardware.
[root@mnetjlm8 ~]# grep vmx /proc/cpuinfo 
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida tpr_shadow vnmi flexpriority
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida tpr_shadow vnmi flexpriority


The guest config is:
[root@mnetjlm8 ~]# cat /etc/libvirt/qemu/jlmxp1.xml 
<domain type='kvm'>
  <name>jlmxp1</name>
  <uuid>e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5</uuid>
  <memory>786432</memory>
  <currentMemory>786432</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc-0.11'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <pae/>
  </features>
  <clock offset='localtime'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/home/virtimages/jlmxp1.img'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' unit='0'/>
    </disk>
    <disk type='block' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
      <shareable/>
      <address type='drive' controller='0' bus='1' unit='0'/>
    </disk>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='network'>
      <mac address='00:16:3e:08:aa:67'/>
      <source network='default'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/>
    <sound model='es1370'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </sound>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
  </devices>
</domain>

The network is the default virbr0.

Snippets of var/log/libvirt/qemu/jlmxp1/log:

0+0 records in
0+0 records out
0 bytes (0 B) copied, 1.1454e-05 s, 0.0 kB/s
0+5452 records in
0+5452 records out
217722079 bytes (218 MB) copied, 15.7844 s, 13.8 MB/s
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm -m 768 -smp 1,sockets=1,cores=1,threads=1 -name jlmxp1 -uuid e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/jlmxp1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -no-acpi -boot c -drive file=/home/virtimages/jlmxp1.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:16:3e:08:aa:67,bus=pci.0,addr=0x4 -net tap,fd=49,vlan=0,name=hostnet0 -usb -vnc 0.0.0.0:0 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x5 -incoming exec:cat -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm -m 768 -smp 1,sockets=1,cores=1,threads=1 -name jlmxp1 -uuid e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/jlmxp1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -no-acpi -boot c -drive file=/home/virtimages/jlmxp1.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:16:3e:08:aa:67,bus=pci.0,addr=0x4 -net tap,fd=47,vlan=0,name=hostnet0 -usb -vnc 0.0.0.0:1 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x5 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm -m 768 -smp 1,sockets=1,cores=1,threads=1 -name jlmxp1 -uuid e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/jlmxp1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -no-acpi -boot c -drive file=/home/virtimages/jlmxp1.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:16:3e:08:aa:67,bus=pci.0,addr=0x4 -net tap,fd=46,vlan=0,name=hostnet0 -usb -vnc 0.0.0.0:0 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x5 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 
0+0 records in
0+0 records out
0 bytes (0 B) copied, 1.1035e-05 s, 0.0 kB/s
24+6768 records in
24+6768 records out
327309778 bytes (327 MB) copied, 21.1944 s, 15.4 MB/s
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm -m 768 -smp 1,sockets=1,cores=1,threads=1 -name jlmxp1 -uuid e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/jlmxp1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -no-acpi -boot c -drive file=/home/virtimages/jlmxp1.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:16:3e:08:aa:67,bus=pci.0,addr=0x4 -net tap,fd=47,vlan=0,name=hostnet0 -usb -vnc 0.0.0.0:0 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x5 -incoming exec:cat -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.11 -enable-kvm -m 768 -smp 1,sockets=1,cores=1,threads=1 -name jlmxp1 -uuid e3f5edb2-75eb-2c13-b5e6-a2cd35b77bf5 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/jlmxp1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=localtime -no-acpi -boot c -drive file=/home/virtimages/jlmxp1.img,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=00:16:3e:08:aa:67,bus=pci.0,addr=0x4 -net tap,fd=48,vlan=0,name=hostnet0 -usb -vnc 0.0.0.0:0 -vga cirrus -device ES1370,id=sound0,bus=pci.0,addr=0x5 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3