[ 1651.562655] br0: port 1(dummy0) entered blocking state
[ 1651.562731] br0: port 1(dummy0) entered disabled state
[ 1651.562800] dummy0: entered allmulticast mode
[ 1651.562883] dummy0: entered promiscuous mode
[ 1651.565641] br0: port 1(dummy0) entered blocking state
[ 1651.565703] br0: port 1(dummy0) entered forwarding state
[ 1651.759343] dummy0: left allmulticast mode
[ 1651.759385] dummy0: left promiscuous mode
[ 1651.759452] br0: port 1(dummy0) entered disabled state