[ 1882.048286] br0: port 1(dummy0) entered blocking state
[ 1882.048345] br0: port 1(dummy0) entered disabled state
[ 1882.048381] dummy0: entered allmulticast mode
[ 1882.048441] dummy0: entered promiscuous mode
[ 1882.051657] br0: port 1(dummy0) entered blocking state
[ 1882.051687] br0: port 1(dummy0) entered forwarding state
[ 1882.286977] dummy0: left allmulticast mode
[ 1882.287022] dummy0: left promiscuous mode
[ 1882.287059] br0: port 1(dummy0) entered disabled state