[ 1673.257177] br0: port 1(dummy0) entered blocking state
[ 1673.257221] br0: port 1(dummy0) entered disabled state
[ 1673.257256] dummy0: entered allmulticast mode
[ 1673.257308] dummy0: entered promiscuous mode
[ 1673.260713] br0: port 1(dummy0) entered blocking state
[ 1673.260779] br0: port 1(dummy0) entered forwarding state
[ 1673.492424] dummy0: left allmulticast mode
[ 1673.492463] dummy0: left promiscuous mode
[ 1673.492493] br0: port 1(dummy0) entered disabled state