[  768.130827] br0: port 1(dummy0) entered blocking state
[  768.130866] br0: port 1(dummy0) entered disabled state
[  768.130903] dummy0: entered allmulticast mode
[  768.130965] dummy0: entered promiscuous mode
[  768.134210] br0: port 1(dummy0) entered blocking state
[  768.134240] br0: port 1(dummy0) entered forwarding state
[  768.353207] dummy0: left allmulticast mode
[  768.353241] dummy0: left promiscuous mode
[  768.353298] br0: port 1(dummy0) entered disabled state