--- openflow-2013-11-22.h	2015-07-23 09:54:17.568479379 -0700
+++ openflow-2013-09-13.h	2015-07-23 09:54:17.576479379 -0700
@@ -1599,7 +1599,8 @@
 };
 OFP_ASSERT(sizeof(struct ofp_meter_band_dscp_remark) == 16);
 
-/* OFPMBT_EXPERIMENTER band - Write actions in action set */
+/* OFPMBT_EXPERIMENTER band - Experimenter type.
+ * The rest of the band is experimenter-defined. */
 struct ofp_meter_band_experimenter {
     uint16_t        type;    /* One of OFPMBT_*. */
     uint16_t        len;     /* Length in bytes of this band. */