BZ: https://bugzilla.redhat.com/show_bug.cgi?id=815755 libvirt patch: https://www.redhat.com/archives/libvir-list/2012-May/msg00289.html The two patches try to fix the support from point of view of virt-manager For virtinst, it will return the hostdev xml description with <address> element if bus, device are present. For virt-manager, try to match the usb device with the four values vendorID, productID, bus, device.
