Net::IPv6Addr checks strings for valid IPv6 addresses, as specified in RFC1884. You throw possible addresses at it, it either accepts them or throws an exception.
... part of T2, get it here
URL: https://search.cpan.org/~tmonroe/Net-IPv6Addr-0.2/
Author: Tony Monroe <tmonroe+perl [at] nog [dot] net>
Maintainer: The T2 Project <t2 [at] t2-project [dot] org>
License: Artistic GPL
Status: Stable
Version: 0.2
Download: http://search.cpan.org/CPAN/authors/id/T/TM/TMONROE/ Net-IPv6Addr-0.2.tar.gz
T2 source: perl-net-ipv6addr.cache
T2 source: perl-net-ipv6addr.desc
Build time (on reference hardware): 1% (relative to binutils)2
Installed size (on reference hardware): 0.04 MB, 9 files
Dependencies (build time detected): 00-dirtree bash coreutils diffutils findutils gawk grep make perl perl-net-ipv4addr perl-xml-parser sed tar
Installed files (on reference hardware):
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1) This page was automatically generated from the T2 package source. Corrections, such as dead links, URL changes or typos need to be performed directly on that source.
2) Compatible with Linux From Scratch's "Standard Build Unit" (SBU).