As you see in the title, you can exactly disable DHCP Server on OpenWRT with editing the /etc/config/dhcp: [sourcecode] config 'dhcp' 'lan' option 'interface' 'lan' option 'start' '100' option 'limit' '150' option 'leasetime' '12h' option 'ignore' '1' [/sourcecode] Just add new option to your configuration: [sourcecode] option 'ignore' '1' [/sourcecode] Do it for every interface that you have on your OpenWRT router.