[   12.931356] br0: port 1(dummy0) entered blocking state
[   12.931408] br0: port 1(dummy0) entered disabled state
[   12.931448] dummy0: entered allmulticast mode
[   12.931499] dummy0: entered promiscuous mode
[   12.934010] br0: port 1(dummy0) entered blocking state
[   12.934046] br0: port 1(dummy0) entered forwarding state
[   13.133821] dummy0: left allmulticast mode
[   13.133870] dummy0: left promiscuous mode
[   13.133899] br0: port 1(dummy0) entered disabled state