Dummy network interface

[Gerard Lally <gerard%netmail.ie@localhost>]

Is it possible in NetBSD to set up a dummy network interface? In
Slackware I load the kernel module 'dummy' (modprobe dummy numdummies=3)
and join it to a bridge and connect virtual machines to this bridge
using a tap interface, so that I don't have to bridge these virtual
machines to the physical adapter on the host and I can set up proper
routing and firewalling. I would like to do the same in NetBSD and Xen.