[ 1933.040969] br0: port 1(dummy0) entered blocking state
[ 1933.041016] br0: port 1(dummy0) entered disabled state
[ 1933.041053] dummy0: entered allmulticast mode
[ 1933.041102] dummy0: entered promiscuous mode
[ 1933.044628] br0: port 1(dummy0) entered blocking state
[ 1933.044693] br0: port 1(dummy0) entered forwarding state
[ 1933.308272] dummy0: left allmulticast mode
[ 1933.308303] dummy0: left promiscuous mode
[ 1933.308337] br0: port 1(dummy0) entered disabled state