+  /*  fprintf(stderr, _("warning, got duplicate tcp line.\n")); */
+      return;
+    }
+
     if (state == TCP_LISTEN) {
        time_len = 0;
        retr = 0L;
@@ -1849,6 +2014,7 @@
            break;
        sleep(1);
        prg_cache_clear();
+       tcp_node_hash_clear();
     }
     return (i);
 }