1 files changed, 55 insertions, 0 deletions
diff --git a/bin/tests/system/testsock.pl b/bin/tests/system/testsock.pl
new file mode 100755
index 0000000..e793874
--- /dev/null
+++ b/bin/tests/system/testsock.pl
@@ -0,0 +1,55 @@
+#!/usr/bin/perl
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+# Test whether the interfaces on 10.53.0.* are up.
+
+require 5.001;
+
+use Cwd 'abs_path';
+use File::Basename;
+use Socket;
+use Getopt::Long;
+
+my $port = 0;
+my $id = 0;
+GetOptions("p=i" => \$port,
+           "i=i" => \$id);
+
+my @ids;
+if ($id != 0) {
+	@ids = ($id);
+} else {
+	my $dir = dirname(abs_path($0));
+	my $fn = "$dir/ifconfig.sh.in";
+	open FH, "< $fn" or die "open < $fn: $!\n";
+	while (<FH>) {
+		@ids = (1..$1)
+		    if /^max=(\d+)\s*$/;
+	}
+	close FH;
+	die "could not find max IP address in $fn\n"
+	    unless @ids > 1;
+}
+
+foreach $id (@ids) {
+        my $addr = pack("C4", 10, 53, 0, $id);
+	my $sa = pack_sockaddr_in($port, $addr);
+	socket(SOCK, PF_INET, SOCK_STREAM, getprotobyname("tcp"))
+      		or die "$0: socket: $!\n";
+	setsockopt(SOCK, SOL_SOCKET, SO_REUSEADDR, pack("l", 1));
+
+	bind(SOCK, $sa)
+	    	or die sprintf("$0: bind(%s, %d): $!\n",
+			       inet_ntoa($addr), $port);
+	close(SOCK);
+}