[ 1567.924635] br0: port 1(dummy0) entered blocking state
[ 1567.924684] br0: port 1(dummy0) entered disabled state
[ 1567.924720] dummy0: entered allmulticast mode
[ 1567.924775] dummy0: entered promiscuous mode
[ 1567.927396] br0: port 1(dummy0) entered blocking state
[ 1567.927458] br0: port 1(dummy0) entered forwarding state
[ 1568.095325] dummy0: left allmulticast mode
[ 1568.095391] dummy0: left promiscuous mode
[ 1568.095454] br0: port 1(dummy0) entered disabled state