[ 1638.575772] br0: port 1(dummy0) entered blocking state
[ 1638.575811] br0: port 1(dummy0) entered disabled state
[ 1638.575844] dummy0: entered allmulticast mode
[ 1638.575896] dummy0: entered promiscuous mode
[ 1638.578716] br0: port 1(dummy0) entered blocking state
[ 1638.578748] br0: port 1(dummy0) entered forwarding state
[ 1638.770447] dummy0: left allmulticast mode
[ 1638.770476] dummy0: left promiscuous mode
[ 1638.770502] br0: port 1(dummy0) entered disabled state