<config>
  <interface hosts="hostA*" address="10.1.10.x" netmask="255.255.255.0"/>
  <interface hosts="hostB*" address="10.1.20.x" netmask="255.255.255.0"/>
  <interface hosts="hostC*" address="10.2.10.x" netmask="255.255.255.0"/>
  <interface hosts="hostD*" address="10.2.20.x" netmask="255.255.255.0"/>
</config>
