From f4645d7f48536903d9426137c99438fd0c25a080 Mon Sep 17 00:00:00 2001
From: Ermal <eri@pfsense.org>
Date: Wed, 1 Jun 2011 14:03:57 +0000
Subject: Add tunable, by default disabled, to enable the default gateway
 switching feature when the default one 'disappears'.

---
 etc/inc/gwlb.inc                       |  2 +-
 usr/local/www/system_advanced_misc.php | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/etc/inc/gwlb.inc b/etc/inc/gwlb.inc
index 9b4c32b..66a0af3 100644
--- a/etc/inc/gwlb.inc
+++ b/etc/inc/gwlb.inc
@@ -367,7 +367,7 @@ function return_gateway_groups_array() {
 	$gateways_arr = return_gateways_array();
 	$gateway_groups_array = array();
 
-	if (0) {
+	if (isset($config['system']['gw_switch_default'])) {
 	/* 
 	 * NOTE: The code below is meant to replace the default gateway when it goes down.
 	 *	This facilitates services running on pfSense itself and are not handled by a PBR to continue working.
diff --git a/usr/local/www/system_advanced_misc.php b/usr/local/www/system_advanced_misc.php
index 51857ab..21bff54 100644
--- a/usr/local/www/system_advanced_misc.php
+++ b/usr/local/www/system_advanced_misc.php
@@ -56,6 +56,7 @@ $pconfig['proxyuser'] = $config['system']['proxyuser'];
 $pconfig['proxypass'] = $config['system']['proxypass'];
 $pconfig['harddiskstandby'] = $config['system']['harddiskstandby'];
 $pconfig['lb_use_sticky'] = isset($config['system']['lb_use_sticky']);
+$pconfig['gw_switch_default'] = isset($config['system']['gw_switch_default']);
 $pconfig['preferoldsa_enable'] = isset($config['ipsec']['preferoldsa']);
 $pconfig['racoondebug_enable'] = isset($config['ipsec']['racoondebug']);
 $pconfig['maxmss_enable'] = isset($config['system']['maxmss_enable']);
@@ -106,6 +107,11 @@ if ($_POST) {
 		else
 			unset($config['system']['lb_use_sticky']);
 
+		if($_POST['gw_switch_default'] == "yes")
+			$config['system']['gw_switch_default'] = true;
+		else
+			unset($config['system']['gw_switch_default']);
+
 		if($_POST['preferoldsa_enable'] == "yes")
 			$config['ipsec']['preferoldsa'] = true;
 		else
@@ -272,6 +278,15 @@ function maxmss_checked(obj) {
 								</td>
 							</tr>
 							<tr>
+								<td width="22%" valign="top" class="vncell"><?=gettext("Load Balancing"); ?></td>
+								<td width="78%" class="vtable">
+									<input name="lb_use_sticky" type="checkbox" id="gw_switch_default" value="yes" <?php if ($pconfig['gw_switch_default']) echo "checked=\"checked\""; ?> />
+									<strong><?=gettext("Allow default gateway switching"); ?></strong><br/>
+									<?=gettext("If the link where the default gateway resides fails " .
+									"switch the default gateway to another available one."); ?>
+								</td>
+							</tr>
+							<tr>
 								<td colspan="2" class="list" height="12">&nbsp;</td>
 							</tr>
 							<tr>
-- 
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