[ 1547.704958] br0: port 1(dummy0) entered blocking state
[ 1547.705030] br0: port 1(dummy0) entered disabled state
[ 1547.705105] dummy0: entered allmulticast mode
[ 1547.705186] dummy0: entered promiscuous mode
[ 1547.707744] br0: port 1(dummy0) entered blocking state
[ 1547.707780] br0: port 1(dummy0) entered forwarding state
[ 1547.886803] dummy0: left allmulticast mode
[ 1547.886836] dummy0: left promiscuous mode
[ 1547.886898] br0: port 1(dummy0) entered disabled state