auto tap0
iface tap0 inet static
        address 192.168.1.1
        netmask 255.255.255.0
        tunctl_user uml-net

auto tap1
iface tap1 inet static
        address 192.168.1.1
        netmask 255.255.255.255
        tunctl_user omega
        uml_proxy_arp 192.168.100.52
        uml_proxy_ether eth0