My ASUS router is getting disconnected from the internet and the logs indicate "Your ISP's DHCP is not functioning properly". I have rebooted both my router and my modem multiple times but the connectivity issue remains.
Hoping that @ComcastChe can solve it by sending a provisioning signal to the modem.
I think I might be in need of your assistance sending a provisioning signal that has helped others. I got the same exact issue, also Asus router with a Motorola modem. Access the internet only by direct connecting to the modem.