--- openflow-2012-03-16.h	2015-07-23 09:54:17.056479358 -0700
+++ openflow-2012-03-16-2.h	2015-07-23 09:54:17.060479358 -0700
@@ -1925,10 +1925,13 @@
     uint32_t        flow_count;       /* Number of flows bound to meter. */
     uint64_t        packet_in_count;  /* Number of packets in input. */
     uint64_t        byte_in_count;    /* Number of bytes in input. */
+    uint32_t   duration_sec;  /* Time meter has been alive in seconds. */
+    uint32_t   duration_nsec; /* Time meter has been alive in nanoseconds beyond
+                                 duration_sec. */
     struct ofp_meter_band_stats band_stats[0]; /* The band_stats length is
                                          inferred from the length field. */
 };
-OFP_ASSERT(sizeof(struct ofp_meter_stats) == 32);
+OFP_ASSERT(sizeof(struct ofp_meter_stats) == 40);
 
 /* Body of reply to OFPST_METER_CONFIG request. Meter configuration. */
 struct ofp_meter_config_stats {