[ 1869.073674] br0: port 1(dummy0) entered blocking state
[ 1869.073731] br0: port 1(dummy0) entered disabled state
[ 1869.073782] dummy0: entered allmulticast mode
[ 1869.073850] dummy0: entered promiscuous mode
[ 1869.077443] br0: port 1(dummy0) entered blocking state
[ 1869.077463] br0: port 1(dummy0) entered forwarding state
[ 1869.346602] dummy0: left allmulticast mode
[ 1869.346643] dummy0: left promiscuous mode
[ 1869.346666] br0: port 1(dummy0) entered disabled state