if (is_ipaddrv4($olddnsservers[$dnscounter - 1])) {
                 mwexec("/sbin/route delete " . escapeshellarg($olddnsservers[$dnscounter - 1]));
             } else {
                 if (is_ipaddrv6($olddnsservers[$dnscounter - 1])) {
                     mwexec("/sbin/route delete -inet6 " . escapeshellarg($olddnsservers[$dnscounter - 1]));
                 }
             }
         }
     }
     if ($changecount > 0) {
         write_config($changedesc);
     }
     $retval = 0;
     $retval = system_hostname_configure();
     $retval |= system_hosts_generate();
     $retval |= system_resolvconf_generate();
     if (isset($config['dnsmasq']['enable'])) {
         $retval |= services_dnsmasq_configure();
     } elseif (isset($config['unbound']['enable'])) {
         $retval |= services_unbound_configure();
     }
     $retval |= system_timezone_configure();
     $retval |= system_ntp_configure();
     if ($olddnsallowoverride != $config['system']['dnsallowoverride']) {
         $retval |= send_event("service reload dns");
     }
     // Reload the filter - plugins might need to be run.
     $retval |= filter_configure();
     $savemsg = get_std_save_message($retval);
 }
 unset($ignore_posted_dnsgw);

    $pconfig['outgoing_interface'] = explode(",", $a_unboundcfg['outgoing_interface']);
}
if (empty($a_unboundcfg['system_domain_local_zone_type'])) {
    $pconfig['system_domain_local_zone_type'] = "transparent";
} else {
    $pconfig['system_domain_local_zone_type'] = $a_unboundcfg['system_domain_local_zone_type'];
}
if ($_POST) {
    if ($_POST['apply']) {
        $retval = services_unbound_configure();
        $savemsg = get_std_save_message($retval);
        if ($retval == 0) {
            clear_subsystem_dirty('unbound');
        }
        /* Update resolv.conf in case the interface bindings exclude localhost. */
        system_resolvconf_generate();
        /* Start or restart dhcpleases when it's necessary */
        system_dhcpleases_configure();
    } else {
        $pconfig = $_POST;
        unset($input_errors);
        if (isset($pconfig['enable']) && isset($config['dnsmasq']['enable'])) {
            if ($pconfig['port'] == $config['dnsmasq']['port']) {
                $input_errors[] = gettext("The DNS Forwarder is enabled using this port. Choose a non-conflicting port, or disable the DNS Forwarder.");
            }
        }
        if (empty($pconfig['active_interface'])) {
            $input_errors[] = gettext("One or more Network Interfaces must be selected for binding.");
        } else {
            if (!isset($config['system']['dnslocalhost']) && (!in_array("lo0", $pconfig['active_interface']) && !in_array("all", $pconfig['active_interface']))) {
                $input_errors[] = gettext("This system is configured to use the DNS Resolver as its DNS server, so Localhost or All must be selected in Network Interfaces.");

                unset($config['system']['dhcpbackup']);
            }
        }
        // Add/Remove RAM disk periodic backup cron jobs according to settings and installation type.
        // Remove the cron jobs on full install if not using RAM disk.
        // Add the cron jobs on all others if the periodic backup option is set.  Otherwise the cron job is removed.
        if ($g['platform'] == $g['product_name'] && !isset($config['system']['use_mfs_tmpvar'])) {
            install_cron_job("/etc/rc.backup_rrd.sh", false);
            install_cron_job("/etc/rc.backup_dhcpleases.sh", false);
        } else {
            install_cron_job("/etc/rc.backup_rrd.sh", $config['system']['rrdbackup'] > 0, $minute = "0", "*/{$config['system']['rrdbackup']}");
            install_cron_job("/etc/rc.backup_dhcpleases.sh", $config['system']['dhcpbackup'] > 0, $minute = "0", "*/{$config['system']['dhcpbackup']}");
        }
        write_config();
        $retval = 0;
        system_resolvconf_generate(true);
        $retval = filter_configure();
        if (stristr($retval, "error") != true) {
            $savemsg = get_std_save_message(gettext($retval));
        } else {
            $savemsg = gettext($retval);
        }
        activate_powerd();
        load_crypto();
        load_thermal_hardware();
        if ($need_relayd_restart) {
            relayd_configure();
        }
    }
}
$pgtitle = array(gettext("System"), gettext("Advanced"), gettext("Miscellaneous"));