[ 1963.162675] br0: port 1(dummy0) entered blocking state
[ 1963.162715] br0: port 1(dummy0) entered disabled state
[ 1963.162756] dummy0: entered allmulticast mode
[ 1963.162808] dummy0: entered promiscuous mode
[ 1963.166383] br0: port 1(dummy0) entered blocking state
[ 1963.166414] br0: port 1(dummy0) entered forwarding state
[ 1963.439738] dummy0: left allmulticast mode
[ 1963.439776] dummy0: left promiscuous mode
[ 1963.439808] br0: port 1(dummy0) entered disabled state