[ 1964.289484] br0: port 1(dummy0) entered blocking state
[ 1964.289539] br0: port 1(dummy0) entered disabled state
[ 1964.289576] dummy0: entered allmulticast mode
[ 1964.289636] dummy0: entered promiscuous mode
[ 1964.292450] br0: port 1(dummy0) entered blocking state
[ 1964.292489] br0: port 1(dummy0) entered forwarding state
[ 1964.481443] dummy0: left allmulticast mode
[ 1964.481490] dummy0: left promiscuous mode
[ 1964.481546] br0: port 1(dummy0) entered disabled state