[ 1755.521938] br0: port 1(dummy0) entered blocking state
[ 1755.521981] br0: port 1(dummy0) entered disabled state
[ 1755.522021] dummy0: entered allmulticast mode
[ 1755.522069] dummy0: entered promiscuous mode
[ 1755.525754] br0: port 1(dummy0) entered blocking state
[ 1755.525825] br0: port 1(dummy0) entered forwarding state
[ 1755.799052] dummy0: left allmulticast mode
[ 1755.799097] dummy0: left promiscuous mode
[ 1755.799184] br0: port 1(dummy0) entered disabled state