Description of problem:

[root@nostromo notting]# virsh net-dumpxml default
<network>
  <name>default</name>
  <uuid>6dd48a44-c988-42a9-9fb0-f1911dd9f83f</uuid>
  <forward mode='nat'/>
  <bridge name='virbr0' stp='on' forwardDelay='0' />
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.254' />
    </dhcp>
  </ip>
</network>

However, on libvirt start (and restart, and restart of the network), forwarding is not enabled. Guests cannot get out.

Version-Release number of selected component (if applicable):

libvirt-0.7.1-11.fc12.x86_64

How reproducible:

100%

Steps to Reproduce:
1. start virt-manager
2. start guest
  
Actual results:

I have no outside ports and I must scream.

Expected results:

networking