[ 1843.527200] br0: port 1(dummy0) entered blocking state
[ 1843.527254] br0: port 1(dummy0) entered disabled state
[ 1843.527294] dummy0: entered allmulticast mode
[ 1843.527345] dummy0: entered promiscuous mode
[ 1843.531109] br0: port 1(dummy0) entered blocking state
[ 1843.531178] br0: port 1(dummy0) entered forwarding state
[ 1843.809115] dummy0: left allmulticast mode
[ 1843.809147] dummy0: left promiscuous mode
[ 1843.809177] br0: port 1(dummy0) entered disabled state