[    3.139684] br0: port 1(dummy0) entered blocking state
[    3.139773] br0: port 1(dummy0) entered disabled state
[    3.139847] dummy0: entered allmulticast mode
[    3.139951] dummy0: entered promiscuous mode
[    3.143024] br0: port 1(dummy0) entered blocking state
[    3.143062] br0: port 1(dummy0) entered forwarding state
[    3.343116] dummy0: left allmulticast mode
[    3.343159] dummy0: left promiscuous mode
[    3.343187] br0: port 1(dummy0) entered disabled state