From cd41d6b95cbfaf6f9b311fd9650a58662a98740f Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Mon, 13 Jul 2015 12:51:11 +0000
Subject: [PATCH] (legacy) disable vlan hw options
 https://github.com/opnsense/core/issues/252

---
 src/etc/inc/interfaces.inc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/etc/inc/interfaces.inc b/src/etc/inc/interfaces.inc
index dab5c8e72..68cbac1be 100644
--- a/src/etc/inc/interfaces.inc
+++ b/src/etc/inc/interfaces.inc
@@ -262,8 +262,11 @@ function interface_vlan_configure(&$vlan) {
 
 	/* make sure the parent interface is up */
 	interfaces_bring_up($if);
-	/* Since we are going to add vlan(4) try to enable all that hardware supports. */
-	legacy_interface_flags($if, 'vlanhwtag vlanmtu vlanhwfilter');
+	if (!isset($config['system']['disablevlanhwfilter'])) {
+		/* Since we are going to add vlan(4) try to enable all that hardware supports. */
+		/* (but only when not disabled in system advanced network settings) */
+		legacy_interface_flags($if, 'vlanhwtag vlanmtu vlanhwfilter');
+	}
 
 	if (!empty($vlanif) && does_interface_exist($vlanif)) {
 		interface_bring_down($vlanif, true);