[ 1896.829388] br0: port 1(dummy0) entered blocking state
[ 1896.829431] br0: port 1(dummy0) entered disabled state
[ 1896.829466] dummy0: entered allmulticast mode
[ 1896.829517] dummy0: entered promiscuous mode
[ 1896.833088] br0: port 1(dummy0) entered blocking state
[ 1896.833152] br0: port 1(dummy0) entered forwarding state
[ 1897.115429] dummy0: left allmulticast mode
[ 1897.115467] dummy0: left promiscuous mode
[ 1897.115498] br0: port 1(dummy0) entered disabled state