[fedora-virt] no virbr0 with libvirt-0.7.0-2

[Gianluca Cecchi]

With libvirt-0.7.0-0.9.gite195b43.fc11.x86_64 all ok,

with libvirt-0.7.0-2.fc11.x86_64 updated today virbr0 is ko.
It doesn't start automatically as configured and in /var/log/messages
I find this:

Aug  7 12:57:43 virtfed libvirtd: 12:57:43.559: error :
networkDisableIPV6:806 : cannot enable
/proc/sys/net/ipv6/conf/virbr0/disable_ipv6: No such file or directory

previously I didn't get this error (and NetworkManager and ipv6 was
already disabled)

Trying to start manually the "default" network inside virt-manager
host details window I get this traceback:
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/host.py", line 247, in start_network
    net.start()
  File "/usr/share/virt-manager/virtManager/network.py", line 71, in start
    self.net.create()
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 620, in create
    if ret == -1: raise libvirtError ('virNetworkCreate() failed', net=self)
libvirtError: cannot enable
/proc/sys/net/ipv6/conf/virbr0/disable_ipv6: No such file or directory

Current config files on my f11 x86_64 with fedora-virt-preview repo enabled:

[root]# cat /etc/modprobe.d/noipv6.conf
alias net-pf-10 off
alias ipv6 off

[root]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=myhostname.domain.com
NOZEROCONF=yes
NETWORKING_IPV6=off

[root at virtfed log]# cat /etc/libvirt/qemu/networks/default.xml
<network>
  <name>default</name>
  <uuid>2e877982-bc6c-48b6-975b-317231c43ce4</uuid>
  <bridge name="virbr0" />
  <forward/>
  <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>

Thanks,
Gianluca