[ 1661.195683] br0: port 1(dummy0) entered blocking state
[ 1661.195726] br0: port 1(dummy0) entered disabled state
[ 1661.195756] dummy0: entered allmulticast mode
[ 1661.195817] dummy0: entered promiscuous mode
[ 1661.198211] br0: port 1(dummy0) entered blocking state
[ 1661.198247] br0: port 1(dummy0) entered forwarding state
[ 1661.374496] dummy0: left allmulticast mode
[ 1661.374534] dummy0: left promiscuous mode
[ 1661.374564] br0: port 1(dummy0) entered disabled state