[libvirt] libvirt support for qemu downscript

Hi I'm using virsh to launch a VM. the if-up script works perfectly but I couldn't find any reference to using down script I 'gueesed ' and put something like that: <interface type='ethernet'> . . <script path='ifup'/> <downscript path='ifdwon'/> . . </interface> but the down script is not called on shutdown am I missing something? thanks Shahar