[ 1780.267394] br0: port 1(dummy0) entered blocking state
[ 1780.267463] br0: port 1(dummy0) entered disabled state
[ 1780.267531] dummy0: entered allmulticast mode
[ 1780.267614] dummy0: entered promiscuous mode
[ 1780.270472] br0: port 1(dummy0) entered blocking state
[ 1780.270504] br0: port 1(dummy0) entered forwarding state
[ 1780.452671] dummy0: left allmulticast mode
[ 1780.452704] dummy0: left promiscuous mode
[ 1780.452783] br0: port 1(dummy0) entered disabled state