[ 1909.749818] br0: port 1(dummy0) entered blocking state
[ 1909.749894] br0: port 1(dummy0) entered disabled state
[ 1909.749960] dummy0: entered allmulticast mode
[ 1909.750044] dummy0: entered promiscuous mode
[ 1909.753542] br0: port 1(dummy0) entered blocking state
[ 1909.753573] br0: port 1(dummy0) entered forwarding state
[ 1909.995730] dummy0: left allmulticast mode
[ 1909.995767] dummy0: left promiscuous mode
[ 1909.995819] br0: port 1(dummy0) entered disabled state