[ 1691.742451] br0: port 1(dummy0) entered blocking state
[ 1691.742523] br0: port 1(dummy0) entered disabled state
[ 1691.742595] dummy0: entered allmulticast mode
[ 1691.742677] dummy0: entered promiscuous mode
[ 1691.745583] br0: port 1(dummy0) entered blocking state
[ 1691.745646] br0: port 1(dummy0) entered forwarding state
[ 1691.932622] dummy0: left allmulticast mode
[ 1691.932649] dummy0: left promiscuous mode
[ 1691.932677] br0: port 1(dummy0) entered disabled state