[ 1786.500481] br0: port 1(dummy0) entered blocking state
[ 1786.500511] br0: port 1(dummy0) entered disabled state
[ 1786.500592] dummy0: entered allmulticast mode
[ 1786.500665] dummy0: entered promiscuous mode
[ 1786.503976] br0: port 1(dummy0) entered blocking state
[ 1786.503998] br0: port 1(dummy0) entered forwarding state
[ 1786.743694] dummy0: left allmulticast mode
[ 1786.743723] dummy0: left promiscuous mode
[ 1786.743743] br0: port 1(dummy0) entered disabled state