I don’t know p910nd. I used cups to work as printer server.

Connect MT300N-V2 to your main router as a client. Do not need to use wds or extender.

Just open the printing service ports on your MT300N-V2 and you can print using the IP of MT300N-V2’s wan (or repeater) interface.

If you messed something wrong, pls reset the router by pressing the reset button for 10 seconds and start over.