Hi, I have tested iproute2: Test: ========== - Deployed Host (EL family) - put in maintenance - on host changed vdsm.conf to: [addresses] management_port = 54321 [vars] ssl = true net_configurator = iproute2 net_persistence = unified - put host up - Added the network (net25) -> Networks -> New -> Name: net25 [X] Enable VLAN tagging: 25 - On host added dummy interface: # ip link add name dummy_interface type dummy - Put host in maintenance/up to reload the new nic - Hosts tab -> Network interfaces -> setup hosts networks Added the network net25 to dummy interface [OK] - Added more networks (-> Networks -> New) and more dummy interface at host - Put host in maintenance/up to reload the new nic - Added bond via Hosts tab -> Network interfaces [X] Save network configuration so far ok, moved the host to maintenance and rebooted. Host is back with the interfaces but vdsm doesn't start (opened below bug). vdsm cannot start - iproute2: device ovirtmgmt already exists; can't create bridge with the same name https://bugzilla.redhat.com/show_bug.cgi?id=1064530 -- Cheers Douglas