I just upgrade to the last version of the libvirt on my Gentoo System. (From 0.9.6 to 0.9.10-r3) But i have a problem with starting my NAT: Error starting network 'NAT': Cannot open network interface control socket: Address family not supported by protocol Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/asyncjob.py", line 66, in tmpcb callback(*args, **kwargs) File "/usr/share/virt-manager/virtManager/network.py", line 82, in start self.net.create() File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1863, in create if ret == -1: raise libvirtError ('virNetworkCreate() failed', net=self) libvirtError: Cannot open network interface control socket: Address family not supported by protocol Anyone have an idea how to fix this? I try also to add a new adapter by hand, but know seems to work her.... so far 4k3nd0