1#!/usr/bin/perl
2
3# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
4#
5# SPDX-License-Identifier: MPL-2.0
6#
7# This Source Code Form is subject to the terms of the Mozilla Public
8# License, v. 2.0.  If a copy of the MPL was not distributed with this
9# file, you can obtain one at https://mozilla.org/MPL/2.0/.
10#
11# See the COPYRIGHT file distributed with this work for additional
12# information regarding copyright ownership.
13
14require 5.001;
15
16use IO::Socket::INET6;
17
18foreach $addr (@ARGV) {
19	my $sock;
20	$sock = IO::Socket::INET6->new(LocalAddr => $addr,
21                                       LocalPort => 0,
22                                       Proto     => tcp)
23                             or die "Can't bind : $@\n";
24	close($sock);
25}
26