[ 1937.869670][ T2785] br0: port 1(dummy0) entered blocking state
[ 1937.869864][ T2785] br0: port 1(dummy0) entered disabled state
[ 1937.870027][ T2785] dummy0: entered allmulticast mode
[ 1937.871737][ T2785] dummy0: entered promiscuous mode
[ 1937.900962][ T2786] br0: port 1(dummy0) entered blocking state
[ 1937.901218][ T2786] br0: port 1(dummy0) entered forwarding state
[ 1939.841464][   T12] dummy0: left allmulticast mode
[ 1939.842003][   T12] dummy0: left promiscuous mode
[ 1939.842239][   T12] br0: port 1(dummy0) entered disabled state