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
53 open IFCONFIG, '/usr/sbin/ifconfig -a inet6 |'
54 or die "Couldn't run ifconfig: $!\n";
58 # "UP" is always printed first (see print_flags() in ifconfig.c):
59 $up = 1 if /^[a-z].*<UP,/;
60 $up = 0 if /^[a-z].*<,/;
62 # assume output is "inet6 ...":
63 if (m:inet6 (\S+)/:) {
66 $local = $addr if $up and $local eq "";
71 exit 1 if $local eq "";
74 # Find the first remote host that responds to an icmp echo,
75 # which isn't a local address.
77 open PING, "/usr/sbin/ping -ns -A inet6 $MULTICAST 56 $MAXHOSTS |" or
78 die "Couldn't run ping: $!\n";
80 if (/bytes from (.*): / and not defined $Local{$1}) {
86 exit 2 if $remote eq "";
88 print "$local $remote\n";