Comment 1 for bug 386407

Note that I don't think the word "Auto" refers to the fact that the system will automatically try to connect to this network. It rather means that NetworkManager automatically created an entry for the network you selected, and filled the configuration with default values (as opposed to you creating a custom connexion). This mostly happens with wireless networks, where you choose the ESSID and let NM find out other parameters.

That said, I agree that's confusing, and could be removed without losing much.