Correct. On the host i have 1 management interface (ovirtmngmt) and 1 bonded pair of 10GB interfaces (bond0) Under Networks I have created the following networks. VLAN70 - Tagged with 70 20GBBond - no tagging In the host I added both VLAN70 and 20GBBond via the Setup Network. I dragged the two networks interfaces and dropped on the bond0 nics. I created two VMs and assigned interfaces. Test1 - Attached VLAN70 I ping 10.0.70.1 (the gateway) and it works. Test2 - Attached 20GBBond and create a eth1.70 interface in the OS. I can not ping 10.0.70.1, since VLAN70 is attached to Test1. If I stop Test1, remove the VLAN70 and delete the VLAN70 network I can then ping 10.0.70.1 from the eth1.70 interface on Test2. However, both can not exist at the same time.