[ 1938.283990] br0: port 1(dummy0) entered blocking state
[ 1938.284041] br0: port 1(dummy0) entered disabled state
[ 1938.284086] dummy0: entered allmulticast mode
[ 1938.284134] dummy0: entered promiscuous mode
[ 1938.287820] br0: port 1(dummy0) entered blocking state
[ 1938.287861] br0: port 1(dummy0) entered forwarding state
[ 1938.562962] dummy0: left allmulticast mode
[ 1938.562999] dummy0: left promiscuous mode
[ 1938.563100] br0: port 1(dummy0) entered disabled state