I'm a new guy to the list and libvirt but I'm guessing you'll be looking at the config section of dnsmasq if you'd like dynamically assigned IP's from the VM's to be on the 172 network. ----------------------------------------------------------------- *Adam Mooz* /Adam.Mooz(a)gmail.com <mailto:Adam.Mooz@gmail.com> //AdamMooz(a)me.com <mailto:AdamMooz@me.com>// /http://www.AdamMooz.com On 2009-11-09, at 11:22 PM, Gerry Reno wrote: > I've got a shared device 'br0' between my host and all my guests. > The guests are now on the host network. What do I need to do in > order to setup a second 'private' network between the guests? My > host network is on 192.168 and I'd like the second private network on > 172.19. > thx, > > -Gerry