config interface 'wan'
    option ifname 'eth1'
    option proto 'static'
    option ipaddr 'myipaddress'
    option netmask '255.255.255.248'
    option gateway 'mygateway'
    option dns '8.8.8.8'
    option metric '10'
    
config interface 'wanb'
    option ifname 'eth2'
    option proto 'static'
    option ipaddr 'myipaddress'
    option netmask '255.255.255.248'
    option gateway 'mygateway'
    option dns '8.8.8.8'
    option metric '20'