[ 1923.909708] br0: port 1(dummy0) entered blocking state
[ 1923.909749] br0: port 1(dummy0) entered disabled state
[ 1923.909784] dummy0: entered allmulticast mode
[ 1923.909846] dummy0: entered promiscuous mode
[ 1923.912777] br0: port 1(dummy0) entered blocking state
[ 1923.912855] br0: port 1(dummy0) entered forwarding state
[ 1924.096575] dummy0: left allmulticast mode
[ 1924.096608] dummy0: left promiscuous mode
[ 1924.096636] br0: port 1(dummy0) entered disabled state