From 6008cfc7c06e8dab5051305cf150f7fba01b302f Mon Sep 17 00:00:00 2001
From: Ryota Ozaki <ozaki.ryota@gmail.com>
Date: Wed, 11 Nov 2009 12:59:54 +0100
Subject: [PATCH] Prevent initializing ebtables if disabled in qemu.conf

* src/qemu/qemu_conf.c: don't initialize ebtables if
  disabled
---
 src/qemu/qemu_conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 28567b241c..5f492ddb9b 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -322,7 +322,7 @@ int qemudLoadDriverConfig(struct qemud_driver *driver,
 
     p = virConfGetValue (conf, "mac_filter");
     CHECK_TYPE ("mac_filter", VIR_CONF_LONG);
-    if (p) {
+    if (p && p->l) {
         driver->macFilter = p->l;
         if (!(driver->ebtables = ebtablesContextNew("qemu"))) {
             driver->macFilter = 0;