5 # The contents of this file are subject to the terms of the
6 # Common Development and Distribution License (the "License").
7 # You may not use this file except in compliance with the License.
9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 # or http://www.opensolaris.org/os/licensing.
11 # See the License for the specific language governing permissions
12 # and limitations under the License.
14 # When distributing Covered Code, include this CDDL HEADER in each
15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 # If applicable, add the following below this CDDL HEADER, with the
17 # fields enclosed by brackets "[]" replaced with your own identifying
18 # information: Portions Copyright [yyyy] [name of copyright owner]
24 # Copyright 2008 Sun Microsystems, Inc. All rights reserved.
25 # Use is subject to license terms.
27 #pragma ident "%Z%%M% %I% %E% SMI"
32 # Find an IPv6 reachable remote host using both ifconfig(1M) and ping(1M).
33 # Print the local address and the remote address, or print nothing if either
34 # no IPv6 interfaces or remote hosts were found. (Remote IPv6 testing is
35 # considered optional, and so not finding another IPv6 host is not an error
36 # state we need to log.) Exit status is 0 if a host was found.
42 my $MAXHOSTS = 32; # max hosts to scan
43 my $TIMEOUT = 3; # connection timeout
44 my $MULTICAST = "FF02::1"; # IPv6 multicast address
47 # Determine local IP address
55 open IFCONFIG, '/sbin/ifconfig -a inet6 |'
56 or die "Couldn't run ifconfig: $!\n";
60 # "UP" is always printed first (see print_flags() in ifconfig.c):
61 $up = 1 if /^[a-z].*<UP,/;
62 $up = 0 if /^[a-z].*<,/;
68 # assume output is "inet6 ...":
69 if (m:inet6 (\S+) :) {
72 $Addr{$interf} = $addr;
80 # Find the first remote host that responds to an icmp echo,
81 # which isn't a local address. Try each IPv6-enabled interface.
83 foreach $interf (split(' ', `ifconfig -l -u inet6`)) {
84 next if $interf =~ /lo[0-9]+/;
85 open PING, "/sbin/ping6 -n -s 56 -c $MAXHOSTS $MULTICAST\%$interf |" or next;
87 if (/bytes from (.*), / and not defined $Local{$1}) {
89 $local = $Addr{$interf};
95 exit 2 if $remote eq "";
97 print "$local $remote\n";