[ 1812.709624] br0: port 1(dummy0) entered blocking state
[ 1812.709653] br0: port 1(dummy0) entered disabled state
[ 1812.709676] dummy0: entered allmulticast mode
[ 1812.709710] dummy0: entered promiscuous mode
[ 1812.712889] br0: port 1(dummy0) entered blocking state
[ 1812.712910] br0: port 1(dummy0) entered forwarding state
[ 1812.944557] dummy0: left allmulticast mode
[ 1812.944606] dummy0: left promiscuous mode
[ 1812.944681] br0: port 1(dummy0) entered disabled state