root@AP_6721:~# cat /etc/config/dhcp

config dnsmasq
	option noresolv '1'
	option strictorder '1'
	option domainneeded '1'
	option localise_queries '1'
	option rebind_protection '1'
	option rebind_localhost '1'
	option local '/lan/'
	option domain 'lan'
	option expandhosts '1'
	option authoritative '1'
	option readethers '1'
	option leasefile '/tmp/dhcp.leases'
	option resolvfile '/tmp/resolv.conf.auto'
	option nonwildcard '0'
	option localservice '1'
	option localuse '1'
	list interface 'LAN'
	list interface 'tun48'
	list interface 'tun49'
	list server '10.48.48.1'

config dhcp 'LAN'
	option start '1'
	option leasetime '12h'
	option limit '2'
	option interface 'LAN'

config dhcp 'WAN'
	option interface 'WAN'
	option ignore '1'

config dhcp 'GUEST_LAN'
	option interface 'GUEST_LAN'
	option ignore '1'

config dhcp 'GUEST_WAN'
	option interface 'GUEST_WAN'
	option ignore '1'