[ 1628.878332] br0: port 1(dummy0) entered blocking state
[ 1628.878368] br0: port 1(dummy0) entered disabled state
[ 1628.878401] dummy0: entered allmulticast mode
[ 1628.878453] dummy0: entered promiscuous mode
[ 1628.881220] br0: port 1(dummy0) entered blocking state
[ 1628.881280] br0: port 1(dummy0) entered forwarding state
[ 1629.059674] dummy0: left allmulticast mode
[ 1629.059760] dummy0: left promiscuous mode
[ 1629.059852] br0: port 1(dummy0) entered disabled state