--- libnids-1.24/src/libnids.c  2010-03-02 00:43:25.000000000 +0330
+++ libnids-1.24-mine/src/libnids.c     2012-05-07 20:46:52.137492412 +0430
@@ -688,6 +688,7 @@ int nids_run()
     }
     START_CAP_QUEUE_PROCESS_THREAD(); /* threading... */
     pcap_loop(desc, -1, (pcap_handler) nids_pcap_handler, 0);
+    return 0;
     /* FIXME: will this code ever be called? Don't think so - mcree */
     STOP_CAP_QUEUE_PROCESS_THREAD(); 
     nids_exit();
@@ -714,8 +715,10 @@ void nids_exit()
     scan_exit();
     strcpy(nids_errbuf, "loop: ");
     strncat(nids_errbuf, pcap_geterr(desc), sizeof nids_errbuf - 7);
-    if (!nids_params.pcap_desc)
-        pcap_close(desc);
+    if (!nids_params.pcap_desc) {
+      pcap_breakloop(desc);
+      pcap_close(desc);
+    }
     desc = NULL;
 
     free(ip_procs);