[ 1679.633430] br0: port 1(dummy0) entered blocking state
[ 1679.633507] br0: port 1(dummy0) entered disabled state
[ 1679.633589] dummy0: entered allmulticast mode
[ 1679.633688] dummy0: entered promiscuous mode
[ 1679.636456] br0: port 1(dummy0) entered blocking state
[ 1679.636498] br0: port 1(dummy0) entered forwarding state
[ 1679.828762] dummy0: left allmulticast mode
[ 1679.828798] dummy0: left promiscuous mode
[ 1679.828880] br0: port 1(dummy0) entered disabled state