[Libvir] Libvirt with Gentoo and Udev

Hello, I have the follow problem with libvirt and Gentoo. I will be use virt-manager for my xen server on my Gentoo machine, zo i have libvirt afcors to use. virt-manager are in the portage of Gentoo. When i start libvirt i get the follow message. libvir: QEMU error : failed to set bridge STP to on Failed to autostart network 'default': failed to set bridge STP to on So i watch in my /var/log/messages for the error. I see the follow Aug 20 17:51:04 localhost udev-net.sh: /etc/init.d/net.vnet0: does not exist or is not executable So i create the vnet0 bridge interface in gentoo. Then i will restart libvirt. I see in /var/log/messages the follow error rc-scripts: We only hotplug for ethernet interfaces if its possibale to run udev and gentoo with libvirt? Or is zombie the can help me with this problem of if this working on Gentoo ? Thanks , Stefan P.s the option of /etc/init.d/net.vnet0 start --verbose will not be working, http://forums.gentoo.org/viewtopic-t-577325.html