Unless you have them memorized, hitting the "apply" button when making configuration changes is a gamble. Sometimes it just restarts the affected service, sometimes it resets the radios, and sometimes it triggers a full-blown router reboot. It would be handy if the user could be warned what was going to happen before it was too late. Maybe I'd wait to make that change until late at night if it's going to reboot the router while someone's watching Netflix.