[ 1935.299362] br0: port 1(dummy0) entered blocking state
[ 1935.299433] br0: port 1(dummy0) entered disabled state
[ 1935.299502] dummy0: entered allmulticast mode
[ 1935.299581] dummy0: entered promiscuous mode
[ 1935.303004] br0: port 1(dummy0) entered blocking state
[ 1935.303038] br0: port 1(dummy0) entered forwarding state
[ 1935.552447] dummy0: left allmulticast mode
[ 1935.552475] dummy0: left promiscuous mode
[ 1935.552511] br0: port 1(dummy0) entered disabled state