Many devices such as those made by Apple(R) implement an autologin feature that prompts the user to login as soon as the device detects the presence of a Captive Portal. This feature sometimes causes problems for users who actually interact with the captive portal. hide(0) - Hide the captive portal from Autologin detector. redirect(1) - Redirect detection messages to the Captive Portal. This option is to allow client autologin to detect the captive portal & prompt the user to login. This may cause post-authentication redirection to fail. drop(2) - Drop detection messages.