Has anyone else noticed this?
I have the above device plugged in and it has a DHCP assigned IP address 192.168.1.69 which it has obtained from an ASUS RT-87U router.
This works well until I examine the logs. It appears that the TP-link device doesn't honour the DHCP lease time of 1 day and continually polls the router every minute.
The workaround is to reserve the address assigned (192.168.1.69) and then assign this address as a static address to the WPA4220, and of course all polling stops and the router won't give that address to any other device on the network.