[ 1672.299654] br0: port 1(dummy0) entered blocking state
[ 1672.299695] br0: port 1(dummy0) entered disabled state
[ 1672.299730] dummy0: entered allmulticast mode
[ 1672.299780] dummy0: entered promiscuous mode
[ 1672.302561] br0: port 1(dummy0) entered blocking state
[ 1672.302621] br0: port 1(dummy0) entered forwarding state
[ 1672.489150] dummy0: left allmulticast mode
[ 1672.489216] dummy0: left promiscuous mode
[ 1672.489277] br0: port 1(dummy0) entered disabled state