--- openflow-2011-09-29.h	2015-07-23 09:54:16.576479339 -0700
+++ openflow-2011-10-02.h	2015-07-23 09:54:16.580479339 -0700
@@ -1401,7 +1401,9 @@
 struct ofp_queue_get_config_request {
     struct ofp_header header;
     uint32_t port;         /* Port to be queried. Should refer
-                              to a valid physical port (i.e. < OFPP_MAX) */
+                              to a valid physical port (i.e. < OFPP_MAX),
+                              or OFPP_ANY to request all configured
+                              queues.*/
     uint8_t pad[4];
 };
 OFP_ASSERT(sizeof(struct ofp_queue_get_config_request) == 16);