[Users] Can I move local_cluster in all-in-one setup?

Hello, working on f18 and ovirt nightly as of ovirt-engine-3.2.0-1.20130106.git0cb01e1.fc18.noarch Can I configure ootb an all-in-one setup with vlan tagging for the to-be created ovirtmgmt lan? In that case how has to be the network config for the host before running engine-setup? classic eth0 + eth0.vlanid or other things? In case the answer is no, can I configure it after creation? I saw in another thread that in general I can create a temporary DC and move the clusters there so that I can then edit the ovirtmgmt network making it vlan tagged. Is this possible in all-in-one too? I created another Datacenter named tempdc and I try to move my local_cluster there.... but I don't see how I can. I edit local_cluster, but the option to change DC is greyed out.... Thanks, Gianluca