[ 2244.902859][ T7183] br0: port 1(dummy0) entered blocking state
[ 2244.903086][ T7183] br0: port 1(dummy0) entered disabled state
[ 2244.903318][ T7183] dummy0: entered allmulticast mode
[ 2244.904387][ T7183] dummy0: entered promiscuous mode
[ 2244.928864][ T7184] br0: port 1(dummy0) entered blocking state
[ 2244.929090][ T7184] br0: port 1(dummy0) entered forwarding state
[ 2247.055444][   T12] dummy0: left allmulticast mode
[ 2247.056454][   T12] dummy0: left promiscuous mode
[ 2247.056841][   T12] br0: port 1(dummy0) entered disabled state