[ 1948.691061] br0: port 1(dummy0) entered blocking state
[ 1948.691108] br0: port 1(dummy0) entered disabled state
[ 1948.691141] dummy0: entered allmulticast mode
[ 1948.691191] dummy0: entered promiscuous mode
[ 1948.694667] br0: port 1(dummy0) entered blocking state
[ 1948.694727] br0: port 1(dummy0) entered forwarding state
[ 1948.954609] dummy0: left allmulticast mode
[ 1948.954670] dummy0: left promiscuous mode
[ 1948.954731] br0: port 1(dummy0) entered disabled state