[ 1744.259940] br0: port 1(dummy0) entered blocking state
[ 1744.259993] br0: port 1(dummy0) entered disabled state
[ 1744.260037] dummy0: entered allmulticast mode
[ 1744.260093] dummy0: entered promiscuous mode
[ 1744.263763] br0: port 1(dummy0) entered blocking state
[ 1744.263803] br0: port 1(dummy0) entered forwarding state
[ 1744.520561] dummy0: left allmulticast mode
[ 1744.520606] dummy0: left promiscuous mode
[ 1744.520640] br0: port 1(dummy0) entered disabled state