[ 1700.157131] br0: port 1(dummy0) entered blocking state
[ 1700.157176] br0: port 1(dummy0) entered disabled state
[ 1700.157213] dummy0: entered allmulticast mode
[ 1700.157268] dummy0: entered promiscuous mode
[ 1700.160509] br0: port 1(dummy0) entered blocking state
[ 1700.160539] br0: port 1(dummy0) entered forwarding state
[ 1700.368356] dummy0: left allmulticast mode
[ 1700.368393] dummy0: left promiscuous mode
[ 1700.368426] br0: port 1(dummy0) entered disabled state