ap/app/Script/etc/udhcpd.conf

start 192.168.1.100
end 192.168.1.200
interface br0
option subnet 255.255.255.0
option dns 192.168.1.1
option router 192.168.1.1
option lease 86400
lease_file /mnt/jffs2/etc/udhcpd.leases