[ 1789.240307] br0: port 1(dummy0) entered blocking state
[ 1789.240384] br0: port 1(dummy0) entered disabled state
[ 1789.240454] dummy0: entered allmulticast mode
[ 1789.240543] dummy0: entered promiscuous mode
[ 1789.243515] br0: port 1(dummy0) entered blocking state
[ 1789.243548] br0: port 1(dummy0) entered forwarding state
[ 1789.448712] dummy0: left allmulticast mode
[ 1789.448754] dummy0: left promiscuous mode
[ 1789.448779] br0: port 1(dummy0) entered disabled state