The QEMU bridge helper allows QEMU to be executed with bridge networking support from a non-privileged user. For more details see: http://lists.gnu.org/archive/html/qemu-devel/2012-01/msg03562.html I would like to see if there is interest in adding support to allow libvirt to execute guests with "-net bridge" support. This support would complement another feature we are currently working on, which provides per-guest configurable user/group for QEMU processes. This will enable guests to be run from separate non-privileged IDs. For more details see: http://www.redhat.com/archives/libvir-list/2012-February/msg00990.html -- Regards, Corey