04-28-2010
Is that really on loopback and internal IPs, or have you sanitized the addresses? Right now you're telling me your server has several IPs on the same subnet, which is a little odd.
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LEARN ABOUT DEBIAN
paranoid::network::ipv6
Paranoid::Network::IPv6(3pm) User Contributed Perl Documentation Paranoid::Network::IPv6(3pm)
NAME
Paranoid::Network::IPv6 - IPv6-related functions
VERSION
$Id: IPv6.pm,v 0.1 2012/05/29 21:37:44 acorliss Exp $
SYNOPSIS
DESCRIPTION
This module contains a few convenience functions for working with IPv6 addresses.
By default only the subroutines themselves are imported. Requesting :all will also import the constants as well.
SUBROUTINES
/METHODS
ipv6NetConvert
@net = ipv6NetConvert($netAddr);
This function takes an IPv4 network address in string format and converts it into and array of arrays. The arrays will contain the base
network address, the broadcast address, and the netmask, each split into native 32bit integer format chunks. Each sub array is essentially
what you would get from:
@chunks = unpack 'NNNN', inet_pton(AF_INET6, '::1');
using '::1' as the sample IPv6 address.
The network address must have the netmask in CIDR format. In the case of a single IP address, the array with only have one subarray, that
of the IP itself, split into 32bit integers.
Passing any argument to this function that is not a string representation of an IP address (including undef values) will cause this
function to return an empty array.
ipv6NetPacked
@net = ipv6NetPacked('fe80::/64');
This function is a wrapper for ipv6NetConvert, but instead of subarrays each element is the packed (opaque) string as returned by
inet_pton.
ipv6NetIntersect
$rv = ipv6NetIntersect($net1, $net2);
This function tests whether an IP or subnet intersects with another IP or subnet. The return value is essentially boolean, but the true
value can vary to indicate which is a subset of the other:
-1: destination range encompasses target range
0: both ranges do not intersect at all
1: target range encompasses destination range
The function handles the same string formats as ipv6NetConvert, but will allow you to test single IPs in integer format as well.
CONSTANTS
These are only imported if explicity requested or with the :all tag.
MAXIPV6CIDR
Simply put: 64. This is the largest CIDR notation supported in IPv6.
IPV6REGEX
Regular expression:
qr/
:(?::[abcdefd]{1,4}){1,7} |
[abcdefd]{1,4}(?:::?[abcdefd]{1,4}){1,7} |
(?:[abcdefd]{1,4}:){1,7}:
/smix;
You can use this for validating IP addresses as such:
$ip =~ m#^@{[ IPV6REGEX ]}$#;
or to extract potential IPs from extraneous text:
(@ips) = ( $string =~ m#(@{[ IPV6REGEX ]})#g);
IPV6CIDRRGX
Regular expression:
qr#(@{[ IPV6REGEX ]})(?:/(d+))?#sm
By default this will extract an IP or CIDR notation network address:
($net, $mask) = ( $ip =~ m#^@{[ IPV6CIDRRGX ]}$# );
In the case of a simple IP address $mask will be undefined.
IPV6BASE
This is the ordinal index of the base network address as returned by ipv6NetConvert.
IPV6BRDCST
This is the ordinal index of the broadcast address as returned by ipv6NetConvert.
IPV6MASK
This is the ordinal index of the network mask as returned by ipv6NetConvert.
DEPENDENCIES
o Paranoid
o Paranoid::Network::Socket
BUGS AND LIMITATIONS
AUTHOR
Arthur Corliss (corliss@digitalmages.com)
LICENSE AND COPYRIGHT
This software is licensed under the same terms as Perl, itself. Please see http://dev.perl.org/licenses/ for more information.
(c) 2012, Arthur Corliss (corliss@digitalmages.com)
perl v5.14.2 2012-05-29 Paranoid::Network::IPv6(3pm)