[ 1813.486997] br0: port 1(dummy0) entered blocking state
[ 1813.487077] br0: port 1(dummy0) entered disabled state
[ 1813.487144] dummy0: entered allmulticast mode
[ 1813.487230] dummy0: entered promiscuous mode
[ 1813.490866] br0: port 1(dummy0) entered blocking state
[ 1813.490897] br0: port 1(dummy0) entered forwarding state
[ 1813.741270] dummy0: left allmulticast mode
[ 1813.741304] dummy0: left promiscuous mode
[ 1813.741386] br0: port 1(dummy0) entered disabled state