[libvirt-users] USB passthrough of all USB-slots to guest

Hi, how can I define passthrough of all USB-slots to a guest with libvirt? With qemu it's very easy: # kvm -usb -usbdevice host:0.* -usbdevice host:1.* -usbdevice host:2.* -usbdevice host:3.* ... This configuration of the VM gets *all* 4 USB-Slots. Every time somewhat USB-device is plugged in the VM gets it. virt-install manpage offers: --host-device 001.003 USB by bus, device (via lsusb). I installed a VM with option --host-device 001.001 according to output of lsusb. The XML-file generated: <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x1d6b'/> <product id='0x0002'/> </source> </hostdev> But no USB device is passed through automatically. I always need virsh attach-device virtualM myusb.xml with exact vendor and product ID. I want to plug in somewhat USB-Stick or other USB stuff without exploring vendor and product id before. Who can help? tia Ekkard