I configured this device in AP Mode, so that I can be used to extend my existing network, and I have a TP Link load balancer, that serves as DHCP server. When you configure it in Dynamic IP mode, with DHCP server turned off, it keeps requesting the IP from DHCP server(TP Link Load Balancer), twice every minute. Even though the lease time for the IP is 2 days(as set in DHCP Server). After I realised that its filling up the logs on Load Balancer, I had to put it in Static IP mode, so that it would stop requesting. But this is not the correct behavior of this router's DHCP client. It should honor the lease time, sent by the DHCP server.