[  298.505290][ T6266] br0: port 1(dummy0) entered blocking state
[  298.505525][ T6266] br0: port 1(dummy0) entered disabled state
[  298.505691][ T6266] dummy0: entered allmulticast mode
[  298.506618][ T6266] dummy0: entered promiscuous mode
[  298.538180][ T6267] br0: port 1(dummy0) entered blocking state
[  298.538654][ T6267] br0: port 1(dummy0) entered forwarding state
[  300.748135][   T12] dummy0: left allmulticast mode
[  300.749009][   T12] dummy0: left promiscuous mode
[  300.749254][   T12] br0: port 1(dummy0) entered disabled state