Merge pull request #1236 from donaldsharp/interface_startup

zebra: Do not allow same rib_dest_t be queued multiple times to meta …

zebra/rib.h

@@ -135,6 +135,8 @@ typedef struct rib_dest_t_ {
 } rib_dest_t;
 
 #define RIB_ROUTE_QUEUED(x)	(1 << (x))
+// If MQ_SIZE is modified this value needs to be updated.
+#define RIB_ROUTE_ANY_QUEUED    0x1F
 
 /*
  * The maximum qindex that can be used.

zebra/zebra_rib.c

@@ -2500,6 +2500,15 @@ static void rib_update_table(struct route_table *table,
 	 * the trigger event.
 	 */
 	for (rn = route_top(table); rn; rn = srcdest_route_next(rn)) {
+		/*
+		 * If we are looking at a route node and the node
+		 * has already been queued  we don't
+		 * need to queue it up again
+		 */
+		if (rn->info
+		    && CHECK_FLAG(rib_dest_from_rnode(rn)->flags,
+				  RIB_ROUTE_ANY_QUEUED))
+			continue;
 		switch (event) {
 		case RIB_UPDATE_IF_CHANGE:
 			/* Examine all routes that won't get processed by the