[   17.824299] br0: port 1(dummy0) entered blocking state
[   17.824338] br0: port 1(dummy0) entered disabled state
[   17.824372] dummy0: entered allmulticast mode
[   17.824422] dummy0: entered promiscuous mode
[   17.827163] br0: port 1(dummy0) entered blocking state
[   17.827194] br0: port 1(dummy0) entered forwarding state
[   18.023352] dummy0: left allmulticast mode
[   18.023379] dummy0: left promiscuous mode
[   18.023407] br0: port 1(dummy0) entered disabled state