The bottom line for a "kill" switch is to activate Network Lock in Eddie client. Then if you want to "kill" your session, merely disconnect the AirVPN connection leaving Eddie running. DO NOT CLOSE OR EXIT the Eddie client. Network Lock will remain active as long as Eddie is running. You may if you wish also shutdown your computer with no issue while Eddie is running. To promote a smooth shutdown, uncheck "Exit confirmation prompt" in the Eddie Preferences UI section. Please note that if you want to ensure you do not accidentally exit Eddie leaving your connection visible, then leave the option to prompt on exit enabled. If you do, you may have to wait or manually force close Eddie during shutdown.