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 'eth0' option type 'bridge' option proto 'static' option netmask '255.255.255.0' option ipaddr '192.168.42.1' config interface 'wwan' option proto 'dhcp' config interface 'USB' option type 'bridge' option proto 'static' option ifname 'usb0' option ipaddr '192.168.254.100' option netmask '255.255.255.0'