[ 1663.530742] br0: port 1(dummy0) entered blocking state
[ 1663.530789] br0: port 1(dummy0) entered disabled state
[ 1663.530828] dummy0: entered allmulticast mode
[ 1663.530883] dummy0: entered promiscuous mode
[ 1663.533715] br0: port 1(dummy0) entered blocking state
[ 1663.533747] br0: port 1(dummy0) entered forwarding state
[ 1663.731853] dummy0: left allmulticast mode
[ 1663.731888] dummy0: left promiscuous mode
[ 1663.731914] br0: port 1(dummy0) entered disabled state