[ 1801.414967] br0: port 1(dummy0) entered blocking state
[ 1801.415013] br0: port 1(dummy0) entered disabled state
[ 1801.415049] dummy0: entered allmulticast mode
[ 1801.415101] dummy0: entered promiscuous mode
[ 1801.418700] br0: port 1(dummy0) entered blocking state
[ 1801.418767] br0: port 1(dummy0) entered forwarding state
[ 1801.670401] dummy0: left allmulticast mode
[ 1801.670447] dummy0: left promiscuous mode
[ 1801.670479] br0: port 1(dummy0) entered disabled state