[ 1935.698231] br0: port 1(dummy0) entered blocking state
[ 1935.698270] br0: port 1(dummy0) entered disabled state
[ 1935.698307] dummy0: entered allmulticast mode
[ 1935.698362] dummy0: entered promiscuous mode
[ 1935.701641] br0: port 1(dummy0) entered blocking state
[ 1935.701707] br0: port 1(dummy0) entered forwarding state
[ 1935.923413] dummy0: left allmulticast mode
[ 1935.923447] dummy0: left promiscuous mode
[ 1935.923482] br0: port 1(dummy0) entered disabled state