I have an occasional issue with my otherwise great RT-AX3000. It will decide that Internet is disconnected when my AT&T Gb gateway (Arris BGW210-700) shows as up. My fix has been a reboot to the AX3000, which fixes all. (I'm open to other suggestions.) Logs did show only one WAN_Connection error: "ISP's DHCP did not function properly". Any thoughts?