[ 1729.048580] br0: port 1(dummy0) entered blocking state
[ 1729.048618] br0: port 1(dummy0) entered disabled state
[ 1729.048638] dummy0: entered allmulticast mode
[ 1729.048674] dummy0: entered promiscuous mode
[ 1729.051869] br0: port 1(dummy0) entered blocking state
[ 1729.051889] br0: port 1(dummy0) entered forwarding state
[ 1729.273216] dummy0: left allmulticast mode
[ 1729.273243] dummy0: left promiscuous mode
[ 1729.273263] br0: port 1(dummy0) entered disabled state