The Dacota AC1200 is a stupid, cheap and weak WiFi router. I've had it for a while, and had nothing to do use it for. Then I realized that I could screw it to the underside of my desk, configure it to pull the connection down from WiFi and send it out on its ethernet ports, and connect a short ethernet cable to my desktop computer and printer -- et voila, a connection without pulling any long cables across my walls.
This is primarily notes on how to do that so I can remember the setup myself ;)
Find a way to access the DHCP server of your source network. Usually this means accessing your source router's web interface and accessing the "DHCP" tab.