[ 1755.756442] br0: port 1(dummy0) entered blocking state
[ 1755.756485] br0: port 1(dummy0) entered disabled state
[ 1755.756519] dummy0: entered allmulticast mode
[ 1755.756564] dummy0: entered promiscuous mode
[ 1755.759255] br0: port 1(dummy0) entered blocking state
[ 1755.759287] br0: port 1(dummy0) entered forwarding state
[ 1755.952179] dummy0: left allmulticast mode
[ 1755.952212] dummy0: left promiscuous mode
[ 1755.952265] br0: port 1(dummy0) entered disabled state