[libvirt-users] Question about libvirt / LXC

Hi there, I have a small simple question about libvirt and LXC containers. I know how to activate /dev/net/tun in an LXC container: #tun lxc.cgroup.devices.allow = c 10:200 rwm in the LXC config file. But, how to do that in a libvirt XML file? I just need to activate the /dev/net/tun device in an LXC container using libvirt. Thanks for your answers! Best regards. Sam