[ 1572.370053] br0: port 1(dummy0) entered blocking state
[ 1572.370100] br0: port 1(dummy0) entered disabled state
[ 1572.370133] dummy0: entered allmulticast mode
[ 1572.370188] dummy0: entered promiscuous mode
[ 1572.372765] br0: port 1(dummy0) entered blocking state
[ 1572.372799] br0: port 1(dummy0) entered forwarding state
[ 1572.558407] dummy0: left allmulticast mode
[ 1572.558437] dummy0: left promiscuous mode
[ 1572.558465] br0: port 1(dummy0) entered disabled state