[ 1744.513463] br0: port 1(dummy0) entered blocking state
[ 1744.513550] br0: port 1(dummy0) entered disabled state
[ 1744.513624] dummy0: entered allmulticast mode
[ 1744.513722] dummy0: entered promiscuous mode
[ 1744.517097] br0: port 1(dummy0) entered blocking state
[ 1744.517135] br0: port 1(dummy0) entered forwarding state
[ 1744.736056] dummy0: left allmulticast mode
[ 1744.736145] dummy0: left promiscuous mode
[ 1744.736230] br0: port 1(dummy0) entered disabled state