config 'interface' 'loopback'
       option 'ifname'   'lo'
       option 'proto'    'static'
       option 'ipaddr'   '127.0.0.1'
       option 'netmask'  '255.0.0.0'

config 'interface' 'lan'
        option 'ifname'   'eth1'
        option 'type'     'bridge'
        option 'proto'    'static'
        option 'ipaddr'   '192.168.1.1'
        option 'netmask'  '255.255.255.0'

config 'interface' 'wan'
        option 'ifname' 'eth0'
        option 'proto' 'dhcp'