I have several TP-Link bulbs, connected via KASA (ALL working) when suddenly, a few of them stopped working when i installed a new router (another draytek).
After several days of pulling my hair out, i have managed to locate the issue.
The afftected bulbs are the LB110 and the Kl110, HWv1, FW 1.8.11.
I set all the bulbs up (again) on KASA. NO problems.
I then link (again) Kasa to my Smartthings infrastructure but several of the bulbs will not register and will not work from within smartthings although they WILL work fine via KASA.
IF i enable mac address filtering on the router (all my IOT and smarthome is on a seperate wifi network, isolated from my LAN) then this will stop the affected items working properly. If i disable mac filtering then all is returned to normal.
I would prefer to enable filtering for a security point of view but if anyone else has the same issue, check mac filtering is not enabled.
Devs!!! Please check and rectify. From an infosec POV this needs fixing.