[ovirt-users] Ovirt 3.5 VDSM Crashing on Networknames ?

I'm having a very strange issue on (some) VDSM hosts. Host is going down and VM's cannot find disk while booting, what do my logs show: vdsmd_init_common.sh: libvirt: Network Driver error : Network not found: no network with matching name 'vdsm-NETNAME' When it see this, all networks are brought down it seems. Anyone seeing this and knows why this happens ? Libvirt is 1.1.1 Cheers, Matt