diff --git a/tools/dirtpan/dirtpan.c b/tools/dirtpan/dirtpan.c
index f59eece..8be0b0e 100644
--- a/tools/dirtpan/dirtpan.c
+++ b/tools/dirtpan/dirtpan.c
@@ -435,6 +435,7 @@ static void event(void)
 static int open_net(uint16_t pan, uint16_t me, uint16_t peer)
 {
 	struct sockaddr_ieee802154 addr;
+	int zero = 0;
 	int s;
 
 	s = socket(PF_IEEE802154, SOCK_DGRAM, 0);
@@ -459,6 +460,12 @@ static int open_net(uint16_t pan, uint16_t me, uint16_t peer)
 		exit(1);
 	}
 
+	if (setsockopt(s, SOL_IEEE802154, WPAN_WANTACK, &zero, sizeof(zero))
+	    < 0) {
+		perror("setsockopt SOL_IEEE802154 WPAN_WANTACK");
+		exit(1);
+	}
+
 	return s;
 }