--- check_dns.c.old	2004-11-17 13:18:35.000000000 -0700
+++ check_dns.c	2004-11-17 12:53:21.000000000 -0700
@@ -38,6 +38,7 @@
 #define ADDRESS_LENGTH 256
 char query_address[ADDRESS_LENGTH] = "";
 char dns_server[ADDRESS_LENGTH] = "";
+int dns_server_port = 53;
 char ptr_server[ADDRESS_LENGTH] = "";
 int verbose = FALSE;
 char expected_address[ADDRESS_LENGTH] = "";
@@ -76,7 +77,7 @@
 	}
 
 	/* get the command to run */
-	asprintf (&command_line, "%s %s %s", NSLOOKUP_COMMAND, query_address, dns_server);
+	asprintf (&command_line, "%s %s %s -port=%d", NSLOOKUP_COMMAND, query_address, dns_server, dns_server_port);
 
 	alarm (timeout_interval);
 	gettimeofday (&tv, NULL);
@@ -275,6 +276,7 @@
 		{"timeout", required_argument, 0, 't'},
 		{"hostname", required_argument, 0, 'H'},
 		{"server", required_argument, 0, 's'},
+		{"port", required_argument, 0, 'p'},
 		{"reverse-server", required_argument, 0, 'r'},
 		{"expected-address", required_argument, 0, 'a'},
 		{"expect-authority", no_argument, 0, 'A'},
@@ -289,7 +291,7 @@
 			strcpy (argv[c], "-t");
 
 	while (1) {
-		c = getopt_long (argc, argv, "hVvAt:H:s:r:a:", long_opts, &opt_index);
+		c = getopt_long (argc, argv, "hVvAt:H:p:s:r:a:", long_opts, &opt_index);
 
 		if (c == -1 || c == EOF)
 			break;
@@ -316,6 +318,9 @@
 				die (STATE_UNKNOWN, _("Input buffer overflow\n"));
 			strcpy (query_address, optarg);
 			break;
+		case 'p': /* hostname */
+			dns_server_port = atoi(optarg);
+			break;
 		case 's': /* server name */
 			/* TODO: this is_host check is probably unnecessary. */
 			/* Better to confirm nslookup response matches */
@@ -403,6 +408,8 @@
    The name or address you want to query\n\
 -s, --server=HOST\n\
    Optional DNS server you want to use for the lookup\n\
+-p, --port=HOST\n\
+   Optional DNS server port, defaults to 53\n\
 -a, --expected-address=IP-ADDRESS\n\
    Optional IP address you expect the DNS server to return\n\
 -A, --expect-authority\n\
@@ -426,7 +433,7 @@
 print_usage (void)
 {
 	printf (_("\
-Usage: %s -H host [-s server] [-a expected-address] [-A] [-t timeout]\n\
+Usage: %s -H host [-s server] [-p port] [-a expected-address] [-A] [-t timeout]\n\
        %s --help\n\
        %s --version\n"), progname, progname, progname);
 }