[ 1887.131056] br0: port 1(dummy0) entered blocking state
[ 1887.131110] br0: port 1(dummy0) entered disabled state
[ 1887.131148] dummy0: entered allmulticast mode
[ 1887.131213] dummy0: entered promiscuous mode
[ 1887.134575] br0: port 1(dummy0) entered blocking state
[ 1887.134619] br0: port 1(dummy0) entered forwarding state
[ 1887.373682] dummy0: left allmulticast mode
[ 1887.373765] dummy0: left promiscuous mode
[ 1887.373878] br0: port 1(dummy0) entered disabled state