pfSense

EOD;

        /* find out igmpproxy upstream interface name if igmpproxy installed/configured */

        if (is_array($config['installedpackages']['igmpproxy']['config'])){

		$igmp_upstr_int_real_name = "";

                $igmp_cfg =& $config['installedpackages']['igmpproxy']['config'];

                foreach($igmp_cfg as $igmp_int){

                        if ($igmp_int['igmptype'] == 'upstream')

                                $igmp_upstr_int_real_name = $config['interfaces'][$igmp_int['igmpname']]['if'];

                }

		if ($igmp_upstr_int_real_name != ""){

				$ipfrules .= <<<EOD

# let out IGMP with IP-options

pass out on $igmp_upstr_int_real_name  all allow-opts keep state label "let out with IP-options on IGMP Upstream interface"

EOD;

		}

        }

	$ipfrules .= <<<EOD