From dae1e6e82707b560430ef0a9a24c57724cfdb8ae Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Tue, 13 Nov 2007 00:11:51 -0800
Subject: Fix VLAN address syncing.

patch d932e04a5e7b146c5f9bf517714b986a432a7594 in mainline.

[PATCH] [VLAN]: Don't synchronize addresses while the vlan device is down

While the VLAN device is down, the unicast addresses are not configured
on the underlying device, so we shouldn't attempt to sync them.

Noticed by Dmitry Butskoy <buc@odusz.so-cdu.ru>

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 net/8021q/vlan.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 2a546919d6fb..327ff81ebbd7 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -629,6 +629,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 			if (!vlandev)
 				continue;
 
+			flgs = vlandev->flags;
+			if (!(flgs & IFF_UP))
+				continue;
+
 			vlan_sync_address(dev, vlandev);
 		}
 		break;
-- 
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