[ 2047.693640][ T9749] br0: port 1(dummy0) entered blocking state
[ 2047.693832][ T9749] br0: port 1(dummy0) entered disabled state
[ 2047.693999][ T9749] dummy0: entered allmulticast mode
[ 2047.695006][ T9749] dummy0: entered promiscuous mode
[ 2047.725718][ T9750] br0: port 1(dummy0) entered blocking state
[ 2047.726289][ T9750] br0: port 1(dummy0) entered forwarding state
[ 2049.714236][   T65] dummy0: left allmulticast mode
[ 2049.715397][   T65] dummy0: left promiscuous mode
[ 2049.715630][   T65] br0: port 1(dummy0) entered disabled state