My airport extreme base station works fine in wifi, but when I connect something to the ethernet ports, the wifi cuts out continuously. However, the guest wifi network still works. When I reboot the airport, it works briefly, then starts cutting out again. If I remove the wired connection to the ethernet port, the wifi begins working normally. Is there a setting that I need to adjust? When the device connects to the ethernet port, it works, but the wifi won't, and vice/versa.