root@OpenWrt:/# cat /etc/config/network

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 'proto' 'static'
        option 'ipaddr' '192.168.111.114'
        option 'netmask' '255.255.255.0'
        option 'dns' '192.168.111.111'
        option 'gateway' '192.168.111.111'




config 'interface' 'lan'
        option 'ifname' 'eth1'

        option 'proto' 'static'
        option 'ipaddr' '192.168.111.1'
        option 'netmask' '255.255.255.0'

config 'interface' 'lan'
        option 'ifname' 'eth2'

        option 'proto' 'static'
        option 'ipaddr' '192.168.111.2'
        option 'netmask' '255.255.255.0'

config 'interface' 'lan'
        option 'ifname' 'eth3'

        option 'proto' 'static'
        option 'ipaddr' '192.168.111.3'
        option 'netmask' '255.255.255.0'

config 'interface' 'lan'
        option 'ifname' 'eth4'

        option 'proto' 'static'
        option 'ipaddr' '192.168.111.4'
        option 'netmask' '255.255.255.0'