Fedora xen - Jul 2007 - Possible to delegate hardware to domU?

Hi,

is it possible to hide hardware from dom0 and delegate it to a domU with 
the out-of-the-box Fedora xen? I.e. with pciback. I would like to 
delegate a network interface to one of my domU''s. Can anybody confirm 
either that it is or that it is not possible?

Thanks.
- Arik