[ 1754.724738] br0: port 1(dummy0) entered blocking state
[ 1754.724787] br0: port 1(dummy0) entered disabled state
[ 1754.724820] dummy0: entered allmulticast mode
[ 1754.724875] dummy0: entered promiscuous mode
[ 1754.728502] br0: port 1(dummy0) entered blocking state
[ 1754.728567] br0: port 1(dummy0) entered forwarding state
[ 1755.006202] dummy0: left allmulticast mode
[ 1755.006248] dummy0: left promiscuous mode
[ 1755.006276] br0: port 1(dummy0) entered disabled state