Ben's notes

     <network>
        <name>private</name>
        <bridge name="virbr2" />
        <ip address="192.168.152.1" netmask="255.255.255.0">
          <dhcp>
            <range start="192.168.152.2" end="192.168.152.254" />
          </dhcp>
        </ip>
        <ip family="ipv6" address="2001:db8:ca2:3::1" prefix="64" />
      </network>