[patch 12/23] Fix VLAN address syncing.

[Greg KH <gregkh@suse.de>]

-stable review patch.  If anyone has any objections, please let us know.

------------------


From: Patrick McHardy <kaber@trash.net>

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(+)

--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -629,6 +629,10 @@ static int vlan_device_event(struct noti
 			if (!vlandev)
 				continue;
 
+			flgs = vlandev->flags;
+			if (!(flgs & IFF_UP))
+				continue;
+
 			vlan_sync_address(dev, vlandev);
 		}
 		break;

-- 
-
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