[ 1923.808946] br0: port 1(dummy0) entered blocking state
[ 1923.808998] br0: port 1(dummy0) entered disabled state
[ 1923.809030] dummy0: entered allmulticast mode
[ 1923.809082] dummy0: entered promiscuous mode
[ 1923.812675] br0: port 1(dummy0) entered blocking state
[ 1923.812705] br0: port 1(dummy0) entered forwarding state
[ 1924.069109] dummy0: left allmulticast mode
[ 1924.069147] dummy0: left promiscuous mode
[ 1924.069197] br0: port 1(dummy0) entered disabled state