Index: tools/tools/netmap/pkt-gen.c
===================================================================
--- tools/tools/netmap/pkt-gen.c
+++ tools/tools/netmap/pkt-gen.c
@@ -1816,6 +1816,7 @@
 	struct netmap_ring *rxring;
 	int i;
 	struct my_ctrs cur;
+	uint64_t n = targ->g->npackets / targ->g->nthreads;
 
 	memset(&cur, 0, sizeof(cur));
 
@@ -1866,7 +1867,7 @@
 	int dump = targ->g->options & OPT_DUMP;
 
 	nifp = targ->nmd->nifp;
-	while (!targ->cancel) {
+	while (!targ->cancel && (n == 0 || cur.pkts < n)) {
 		/* Once we started to receive packets, wait at most 1 seconds
 		   before quitting. */
 #ifdef BUSYWAIT