[ 1743.950651] br0: port 1(dummy0) entered blocking state
[ 1743.950701] br0: port 1(dummy0) entered disabled state
[ 1743.950738] dummy0: entered allmulticast mode
[ 1743.950784] dummy0: entered promiscuous mode
[ 1743.954356] br0: port 1(dummy0) entered blocking state
[ 1743.954392] br0: port 1(dummy0) entered forwarding state
[ 1744.207883] dummy0: left allmulticast mode
[ 1744.207957] dummy0: left promiscuous mode
[ 1744.208049] br0: port 1(dummy0) entered disabled state