[ 1629.448058] br0: port 1(dummy0) entered blocking state
[ 1629.448096] br0: port 1(dummy0) entered disabled state
[ 1629.448131] dummy0: entered allmulticast mode
[ 1629.448184] dummy0: entered promiscuous mode
[ 1629.451031] br0: port 1(dummy0) entered blocking state
[ 1629.451069] br0: port 1(dummy0) entered forwarding state
[ 1629.629643] dummy0: left allmulticast mode
[ 1629.629693] dummy0: left promiscuous mode
[ 1629.629719] br0: port 1(dummy0) entered disabled state