[ 1633.910582] br0: port 1(dummy0) entered blocking state
[ 1633.910620] br0: port 1(dummy0) entered disabled state
[ 1633.910657] dummy0: entered allmulticast mode
[ 1633.910716] dummy0: entered promiscuous mode
[ 1633.914112] br0: port 1(dummy0) entered blocking state
[ 1633.914145] br0: port 1(dummy0) entered forwarding state
[ 1634.128895] dummy0: left allmulticast mode
[ 1634.128934] dummy0: left promiscuous mode
[ 1634.128994] br0: port 1(dummy0) entered disabled state