[ 1629.301956] br0: port 1(dummy0) entered blocking state
[ 1629.302012] br0: port 1(dummy0) entered disabled state
[ 1629.302056] dummy0: entered allmulticast mode
[ 1629.302112] dummy0: entered promiscuous mode
[ 1629.304613] br0: port 1(dummy0) entered blocking state
[ 1629.304672] br0: port 1(dummy0) entered forwarding state
[ 1629.486482] dummy0: left allmulticast mode
[ 1629.486528] dummy0: left promiscuous mode
[ 1629.486557] br0: port 1(dummy0) entered disabled state