I have an Asus RT-AC3100 on which the 2.5GHz wifi band died. I also have an old Asus RT-N66U on which the 5GHz wifi band died. So, I decided to disable the 2.5GHz channel on the AC3100, disable the 5GHz channel on the N66U, and connect the N66U as a client to the AC3100, thereby extending the...