captiveportal.inc: (re)add table 42 for whitelist

whitelist in firewall does not work...

etc/inc/captiveportal.inc

@@ -586,6 +586,14 @@ EOD;
 
 	/* allowed ipfw rules to make allowed hostnames work */
 	$cprules .= captiveportal_allowedhostname_configure();
+
+        /* allowed ipfw rules for univnautes whitelist */
+	$cprules .= <<<EOD
+# accept every traffic from table 42 = univnautes whitelist
+add 65500 allow ip from any to table(42) in
+add 65501 allow ip from table(42) to any out
+table 42 flush
+EOD;
 	
 	/* load rules */
 	$cprules = "flush\n{$cprules}";