[   47.271136][ T1521] br0: port 1(dummy0) entered blocking state
[   47.271423][ T1521] br0: port 1(dummy0) entered disabled state
[   47.271696][ T1521] dummy0: entered allmulticast mode
[   47.272726][ T1521] dummy0: entered promiscuous mode
[   47.298229][ T1522] br0: port 1(dummy0) entered blocking state
[   47.298534][ T1522] br0: port 1(dummy0) entered forwarding state
[   49.528587][   T12] dummy0: left allmulticast mode
[   49.528891][   T12] dummy0: left promiscuous mode
[   49.529158][   T12] br0: port 1(dummy0) entered disabled state