More the opposite according to Apple Support where at the bottom of the page under the Learn more heading the first bullet reads as follows:I set up Wi-Fi and that seems to be the trick. Now every time the system turns on ethernet is selected. Problem solved. I guess the ATV defaults to a Wi-Fi connection and wants that configured but then "see's" the ethernet cable is connected and then selects that.
- Apple TV connects to Internet with either Wi-Fi or Ethernet. When you use an Ethernet cable, Apple TV automatically uses that connection instead of your Wi-Fi network.
In order to set it up to switch to WiFi I would have to disconnect my ethernet cable and follow these instructions if I have never set it up to use WiFi in the past or if I got a new modem / router or switched internet service providers...
How to Change WiFi Networks on Apple TV
Similar instructions from Linksys. Whatever the case, glad to see it is now working correctly.