[ 1907.774019] br0: port 1(dummy0) entered blocking state
[ 1907.774092] br0: port 1(dummy0) entered disabled state
[ 1907.774183] dummy0: entered allmulticast mode
[ 1907.774273] dummy0: entered promiscuous mode
[ 1907.777760] br0: port 1(dummy0) entered blocking state
[ 1907.777793] br0: port 1(dummy0) entered forwarding state
[ 1908.030407] dummy0: left allmulticast mode
[ 1908.030473] dummy0: left promiscuous mode
[ 1908.030559] br0: port 1(dummy0) entered disabled state