[ 1769.289554] br0: port 1(dummy0) entered blocking state
[ 1769.289618] br0: port 1(dummy0) entered disabled state
[ 1769.289671] dummy0: entered allmulticast mode
[ 1769.289762] dummy0: entered promiscuous mode
[ 1769.293248] br0: port 1(dummy0) entered blocking state
[ 1769.293271] br0: port 1(dummy0) entered forwarding state
[ 1769.545731] dummy0: left allmulticast mode
[ 1769.545784] dummy0: left promiscuous mode
[ 1769.545845] br0: port 1(dummy0) entered disabled state