Sorry for hijacking the thread for something more general than vnlink:
It just occured to me today that the concept of virtual network should
be used also in the <graphics> section. Currently, if you specify
<graphics listen="some-ip-address"> you make the domain practically
unmigratable.
There should be a method to specify a simbolic network name, to be
evaluated to IP on the destination host, something like
<graphics listenNetwork="some-virtual-network">
Regards,
Dan.