[ 1744.772514] br0: port 1(dummy0) entered blocking state
[ 1744.772559] br0: port 1(dummy0) entered disabled state
[ 1744.772589] dummy0: entered allmulticast mode
[ 1744.772640] dummy0: entered promiscuous mode
[ 1744.775376] br0: port 1(dummy0) entered blocking state
[ 1744.775441] br0: port 1(dummy0) entered forwarding state
[ 1744.969426] dummy0: left allmulticast mode
[ 1744.969461] dummy0: left promiscuous mode
[ 1744.969490] br0: port 1(dummy0) entered disabled state