// captiveportal-ogout.php

require_once("config.inc");
require_once("captiveportal.inc");

echo "TRYING..";
if ($_GET['logout_id']) {
	$sessionid = $_GET['logout_id'];
	echo " it's there..";
	captiveportal_disconnect_client($sessionid);
	echo " try and see if user is dc";
} else {
	echo 'nope didn't work';
}

Then tried
captiveportal-logout.php?logout_id={real id from looking at source code filled after being logged in}

But no dice …..........

Thoughts?