[ovirt-users] Change Vlan ID's which are connected to the Host/VM's

Hi Guys, Is there a way to change Vlan ID's which are connected to the Hosts when the VM's on it are down ? As i need to change a lot of them it would be create if the engine can perform some process which allows me to hammer my hosts with the new vlan ID's for their bridges. I hope someone has an idea. Thanks! Matt