**** 1.23 Mar 18, 2020
Deprecate 2-argument form of TSIG create().
Fix rt.cpan.org #132170
[Documentation] Problems with TSIG on ddns update.
Fix rt.cpan.org #131906
Undefined errorstring/warning when axfr fails
**** 1.22 Feb 13, 2020
Fix rt.cpan.org #131579
Parse issue in Net::DNS::RR->token
Feature
Provide rudimentary decode and print for DSO packet.
pkglint -r --network --only "migrate"
As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.
Upstream changes:
**** 1.20 Mar 22, 2019
Revise documentation examples to use AAAA instead of A records.
TSIG MAC representation changed to Base64 (align with BIND).
Update Parameters.pm to resync with IANA registry.
Refactor resolver test scripts.
Fix rt.cpan.org #128081
Recurse.pm fails to resolve domain “kickboxingireland.ie”
Fix rt.cpan.org #127307
Provide a more informative exception report if application code
has no "use Net::DNS::SEC" declaration but nevertheless attempts
to invoke the DNSSEC sign or verify features.
Upstream changes:
1.19 Nov 14, 2018
Show structure of EDNS options using Perl-like syntax.
Fix rt.cpan.org #127557
Net::DNS::Resolver::Base should use 3 args open
Fix rt.cpan.org #127182
Incorrect logic can cause DNS search to emit fruitless queries.
Upstream changes:
1.18 Sep 21, 2018
Documentation revised to remove ambigous use of "answer" which
has been used to refer to both the answer section of a packet
and the entire reply packet received from a nameserver.
Fix rt.cpan.org #127018
Net::DNS::ZoneFile->parse() fails if include directory specified.
Fix rt.cpan.org #127012
DNS resolution broken when options ndots used in /etc/resolv.conf
**** 1.17 Jul 25, 2018
Fix rt.cpan.org #125890
AXFR: 1 record per packet responses.
Fix rt.cpan.org #125889
New NSEC3 for empty non-terminal leaves type bitmap undefined.
Fix rt.cpan.org #125882
RDATA name compression pointer calculated incorrectly.
**** 1.16 Jul 15, 2018
Feature
New NSEC3 encloser(), nextcloser() and wildcard() instance
methods return closest encloser, "next closer" and putative
wildcard names respectively.
Feature
Add new NSEC covers() instance method.
Feature
New NSEC typemap() instance method interrogates type list.
IO::Socket::INET6 removed from recommended module metadata.
IPv6 requires IO::Socket::IP which is now a core package.
No requirement to escape @ in unquoted contiguous string.
**** 1.15 Feb 9, 2018
GOST R 34.11-94 hash algorithm: end of life 1st Jan 2018
per sunset clause in successor standard GOST R 34.11-2012.
Digest::GOST removed from the recommended module metadata,
but will still be used if available.
**** 1.14 Dec 15, 2017
Fix rt.cpan.org #123702
'use base' should not be used in packages with several
subpackages defined
Fix rt.cpan.org #123676
Net::DNS::Nameserver malformed message on big axfr
**** 1.13 Oct 18, 2017
Feature IDN query support
Queries for domain names containing non-ASCII characters are
now possible on Unicode platforms using CPAN Net::LibIDN2
**** 1.11 Jun 26, 2017
Fix rt.cpan.org #122138
Send a UDP query with udppacketsize=512
Feature
Extract default resolver configuration from OS/390 MVS datasets.
Thanks to Sandra Carroll and Yaroslav Kuzmin for their assistance.
**** 1.10 May 5, 2017
Fix rt.cpan.org #120748
Net::DNS::Resolver::MSWin32 critical issue
Thanks to Dmytro Zagashev for his valuable assistence during
the investigation which exposed five distinct issues.
Feature rt.cpan.org #18819
Perl 5.22.0 puts EBCDIC character encoding back on the agenda.
Thanks to Yaroslav Kuzmin for successful test build on os390.
**** 1.08 [unreleased]
Fix rt.cpan.org #120208
Unable to install 1.07 in local::lib environment
Feature rt.cpan.org #119679
Net::DNS::Nameserver: UpdateHandler for responding to UPDATE packets
Feature rt.cpan.org #75357
Net::DNS::Nameserver: optionmask (similar to headermask) added
to allow user to set EDNS CLIENT-SUBNET option in reply packet
Discontinue support for pre-5.6 perl
Remove pre-5.6 workarounds and outdated language features
MASTER_SITES= site1 \
site2
style continuation lines to be simple repeated
MASTER_SITES+= site1
MASTER_SITES+= site2
lines. As previewed on tech-pkg. With thanks to rillig for fixing pkglint
accordingly.
**** 1.07 December 29, 2016
Fix rt.cpan.org #118598/#108908
Serious Makefile.PL issues
"make install" now suppressed if pre-1.01 version detected
Fix rt.cpan.org #115558
Net::DNS::Nameserver does not allow EDNS replies
Fix rt.cpan.org #114917
Net::DNS::ZoneFile fails to parse mixed case mnemonics
Fix rt.cpan.org #114876
Use of uninitialized value in lc at MSWin32.pm line 77
Fix rt.cpan.org #114819
Net::DNS fails to compile with taint checks enabled
**** 1.05 March 7, 2016
Fix rt.cpan.org #111559
1.04: TSIG not working anymore (TSIG.pm)
Fix rt.cpan.org #108908
Installing recent version gets shadowed by old version.
Warnings added to Makefile.PL and t/00-version.t.
Fix rt.cpan.org #66900
Net::DNS::Async unable to retry truncated UDP using TCP because
of limitations in Net::DNS.
**** 1.04 December 8, 2015
Fix rt.cpan.org #109183
Semantics of "retry" and "retrans" options has changed with 1.03
Fix rt.cpan.org #109152
Deprecated method make_query_packet breaks calling code
Fix rt.cpan.org #109135
Resolver behaves differently with long and short IPv6 address format
Fix rt.cpan.org #108745
Net::DNS::Resolver bgsend
**** 1.02 September 16, 2015
Fix rt.cpan.org #107052
suppress messages: Can't locate Net/DNS/Resolver/linux.pm
Fix rt.cpan.org #106916
Dependency on MIME::Base32 makes Net::DNS not installable on MSWin32
Fix rt.cpan.org #106565
Net::DNS::Resolver::Recurse and IPv6 Reverse DNS
Fix rt.cpan.org #105808
Version test for Pod::Test is broken
{perl>=5.16.6,p5-ExtUtils-ParseXS>=3.15}:../../devel/p5-ExtUtils-ParseXS
since pkgsrc enforces the newest perl version anyway, so they
should always pick perl, but sometimes (pkg_add) don't due to the
design of the {,} syntax.
No effective change for the above reason.
Ok joerg
**** 1.01 Jul 6, 2015
Feature
The RRs previously only available with Net::DNS::SEC are now
integrated with Net::DNS. Net::DNS::SEC needs to be installed
to enable the signature generation and verification functions.
Fix rt.cpan.org #105491
Can't call method "zclass" on an undefined value at ... Net/DNS/Packet.pm line 474
Fix rt.cpan.org #105421
Dead link in Net::DNS::FAQ
Fix rt.cpan.org #104657
Wrong split on Cygwin
Fix rt.cpan.org #102810
Dynamic update: rr_add overrides ttl of zero
Fix rt.cpan.org #102809
CAA broken
**** 0.83 Feb 26, 2015
Fix rt.cpan.org #101798
AUTOLOAD error confusing w/o reference to object class
Fix rt.cpan.org #101709
Provide separate control of IPv6 tests
Fix rt.cpan.org #101675
MX record with 0 preference fails to parse
Fix rt.cpan.org #101405
Install tests fail for v0.81 on Perl 5.21.7
**** 0.81 Oct 29, 2014
Fix rt.cpan.org #99571
AXFR BADSIG failures
Fix rt.cpan.org #99531
Resolver doc error - when is a 'bug' a 'bug'? [TSIG verification]
Fix rt.cpan.org #99528
TSIG::create fails with some filenames
Fix rt.cpan.org #99527
Random errors... [declaration with statement modifier]
Fix rt.cpan.org #99429
Infinite recursion in Net::DNS::Resolver::Recurse::send when
following certain delegations with empty-non terminals.
Fix rt.cpan.org #99320
Net::DNS::ZoneFile bug in "$ORIGIN ."
**** 0.80 Sep 22, 2014
Removal of Win32::IPHelper support with cygwin
Resolvers on Cygwin can get their DNS configuration from the
registry directly via the /proc filesystem. Getting rid of
the other method reduces dependencies and makes installations
less error prone.
Rework rt.cpan.org #96119
"Too late to run INIT block" warning for require Net::DNS
**** 0.79 Aug 22, 2014
Feature rt.cpan.org #98149
Add support for Android platform.
Fix rt.cpan.org #97736
Net::DNS::Resolver->new mistakenly copies supplied arguments
into default configuration on first instantiation.
Fix rt.cpan.org #97502
Net::DNS::Resolver->retrans does not accept a value of 1 (uses 2 instead)
Fix rt.cpan.org #83642
Configure CD flag in Net::DNS::Resolver->new
Fix rt.cpan.org #81760
Reverted workaround for TXT issue preventing propagation of
rule updates for SpamAssassin versions earlier than 3.4.0
Fix rt.cpan.org #16630
Net::DNS::Resolver::Recurse issues lots of IMHO unnecessary DNS requests.
**** 0.78 Jul 10, 2014
Fix rt.cpan.org #97036
Nameserver identification on Cygwin
Fix rt.cpan.org #96814
Trailing comments not stripped in /etc/resolv.conf
Fix rt.cpan.org #96812
Net::DNS::Resolver->new() hangs if nameserver :: exists
Fix rt.cpan.org #96755
RFC 3597 (hex) parsing mistake
Fix rt.cpan.org #96708
String treated as boolean in TXT
Fix rt.cpan.org #96608
"Insecure dependency in connect" with Net::DNS::Resolver over TCP
Fix rt.cpan.org #96535
Net::DNS::Resolver warns "Use of uninitialized value in length"
Fix rt.cpan.org #96531
Calling $resolver->nameservers multiple times returns an
increasingly-long list (on some perl installations)
Fix rt.cpan.org #96439
Uninitialised decoding object when printing packet
**** 0.77 Jun 13, 2014
Fix rt.cpan.org #96151
Unlocalised $_ modified when reading config file
Fix rt.cpan.org #96135
Deep recursion problem on Cygwin
Fix rt.cpan.org #96119
"Too late to run INIT block" warning for require Net::DNS
Fix rt.cpan.org #96035
Insert missing plan 'no-plan' in 10-recurse.t
Fix inefficient Net::DNS::SEC compatibility code
**** 0.76 May 23, 2014
Fix rt.cpan.org #95738
Test failure with IPv6 address in resolver.conf but without
prerequisite IO::Socket::INET6 package installed.
Fix rt.cpan.org #95596
Incorrect parsing of nameserver lines in resolv.conf
Feature rt.cpan.org #79568
Implement prefer_v6 resolver configuration attribute.
Fix rt.cpan.org #67602
Set resolver configuration defaults at first instantiation
instead of module load time.
**** 0.75 May 8, 2014
Fix rt.cpan.org #94069
Compile-time constant in Domain.pm/Text.pm cannot be used to
store pointer to encoding object when using perlcc compiler.
Thanks are due to Reini Urban for testing the revised code.
Fix rt.cpan.org #93764
Resolver gives unhelpful errorstring when attempting to use
IPv6-only nameserver without INET6 and Socket6 installed.
Fix rt.cpan.org #92626
Clarify documentation surrounding SRV RR sorting
Feature
Implement TSIG verified zone transfer.
Fix rt.cpan.org #92433 & #91241
TSIG: implement sign/verify for multi-packet message.
Fix rt.cpan.org #79569
Iterate nameservers in AXFR
**** 0.74 Jan 16, 2014
Fix rt.cpan.org #91306
Nameserver crashes on malformed UDP query.
Fix rt.cpan.org #91241
TSIG: Fix incorrectly generated %algbyval table.
Feature
Add CAA, EUI48 and EUI64 RR implementation.
**** 0.73 Nov 29, 2013
Fix rt.cpan.org #88778
$update->unique_push() does not work as advertised.
Fix rt.cpan.org #88744
Nameserver crashes on malformed TCP query.
Fix rt.cpan.org #84601/#81942
Fix memory leak on packet cleanup. Indirect self-reference via
header prevented garbage collector from deallocating packet.
Feature rt.cpan.org #84468
TSIG: add support for HMAC-SHA1 .. HMAC-SHA512
Fix rt.cpan.org #84110
Incorrect parsing of PTR records in zonefile.
Fix rt.cpan.org #83755
Erroneous attempt to invoke Net::LibIDN package in Domain.pm.
Fix rt.cpan.org #83078
Can't locate Net/DNS/Resolver/linux.pm in @INC
Conjecture: eval{ ... }; if ($@) { ... }; broken by threads.
Fix rt.cpan.org #83075
ZoneFile.pm wrongly rejects $TTL 0 directive.
Fix rt.cpan.org #82621
Error string empty after failed TCP query.
Fix rt.cpan.org #82296
IPv6 with embedded IPv4 address not mapped to ip6.arpa.
Fix rt.cpan.org #82294
Perl taint inadvertently removed in Domain and Text objects.
Feature rt.cpan.org #53610
add TSIG validation support
Do it for all packages that
* mention perl, or
* have a directory name starting with p5-*, or
* depend on a package starting with p5-
like last time, for 5.18, where this didn't lead to complaints.
Let me know if you have any this time.
**** 0.72 Dec 28, 2012
Fix rt.cpan.org #82148
nxrrset fails to ignore RDATA.
Fix rt.cpan.org #82134
TSIG key and algorithm names not downcased in digest.
Class not forced to ANY.
Fix rt.cpan.org #82063
yxrrset, nxrrset and rr_del functions should force zero TTL.
Fix rt.cpan.org #82047
Clarify documentation to indicate that header counts may
differ from the number of RRs present if a packet is corrupt.
Fix rt.cpan.org #81941
Clarify documentation to make clear that bgread will not switch to
TCP when a truncated packet is received.
**** 0.71 Dec 15, 2012
Temporary workaround rt.cpan.org #81760
The rdatastr method for TXT RRs will return unconditionally
quoted rdata fields to work around an issue with updating
SpamAssassin rules. This workaround will be reverted after
release of a version of SpamAssassin which resolves the issue.
Fix rt.cpan.org #81942
Fix memory leak on packet cleanup. The back-reference via the
header attribute (with xbody) caused the garbage collector not
to clean a packet. Header is now explicitly cleaned via
Net::DNS::Packet::DESTROY.
Fix TSIG initialization
Uninitialised algorithm attribute caused signature generation
to fail silently when creating a TSIG signed packet.
Fix rt.cpan.org #81869
The rr_del auxilliary function broken by a conflicting change
in the RR.pm string parser. Note the ambiguous use of ANY,
which may stand for CLASS255 or TYPE255 depending upon the
argument string presented.
Fix rt.cpan.org #81756
Test failures on Perl 5.8.5 .. 5.8.8.
lc(), uc() and case insensitive regex matching broken for UTF8.
Thanks are due to Paul Howarth for patient work with perl -d.
Fix rt.cpan.org #81787
NXDOMAIN no longer reported by $resolver->errorstring.
Fix rt.cpan.org #81814
Allow zero in format, tag and algorithm fields of CERT RR.
Fix rt.cpan.org #81786
Substitute last owner for leading spaces in multiline zonefile RR.
Fix rt.cpan.org #77444
Make use of new extended header modus operandi for OPT records
also in the resolver. Preventing a warning.
**** 0.70 Dec 6, 2012
Feature added support for NID L32 L64 LP, RFC6742.
a) refer 'perl' in their Makefile, or
b) have a directory name of p5-*, or
c) have any dependency on any p5-* package
Like last time, where this caused no complaints.
Upstream changes:
**** 0.69 Dec 5, 2012
Feature added support for NID L32 L64 LP, RFC6742.
Feature rt.cpan.org #62030
Parsing of BIND zone files implemented in Net::DNS::ZoneFile.
This replaces and is backward compatible with the CPAN module
of the same name.
Enhancement to simplify RR subtype template and recode packages.
Enhancement rt.cpan.org #75185
Packet decoder returns index to end of decoded data.
Added packet->reply() method.
Fix rt.cpan.org #79569
AXFR not setting packet->answer_from.
Enhancement rt.cpan.org #18819
Added support for Unicode and non-ASCII character encoding.
Feature integrate OPT as a header extension
Treat extended rcodes and the DO flag like they are part of
the packet header.
Fix rt.cpan.org #77444
Support escaped characters according to RFC1035 in TXT rdata.
Fix rt.cpan.org #77304
Fix resolver searchlist from registry setup on Win32.
Enhancement rt.cpan.org #67570
Make wire2presentation two till eighteen times faster.
A contribution from Matthew Horsfall
Fix rt.cpan.org #73366
Remove existing TSIG when resigning with a new TSIG and give warning.
Fix rt.cpan.org #75330
Also try nameserver without glue (as a last resort) when recursing.
Fix rt.cpan.org #74493
Read correct resolver configuration in OS/2.
**** 0.68 Jan 30, 2012
Fix rt.cpan.org #72314
Let a Net::DNS::Nameserver bind on Net::DNS::Nameserver::DEFAULT_ADDR
as a last resort.
Fix to suppress false warnings about subroutine profiles on ancient
versions of perl.
Fix to avoid constants with value undef which prevents unwanted code from being
optimized away on ancient versions of perl.
Fix code error in PTR.pm, canonical RDATA not downcased.
Enhancement to clarify the function of parse and data methods, by renaming them
to decode and encode respectively.
Feature IDN query support.
Question.pm modified to use the recently introduced DomainName.pm
module to represent DNS names. Queries for domain names containing
non-ASCII characters are now possible on Unicode platforms with CPAN
Net::LibIDN installed.
Introduction of Mailbox.pm module that will be used in the future to represent
RDATA components containing DNS coded RFC822 mailbox addresses.
Introduction of Text.pm module that will be used in the future to represent
RDATA components containing text.
**** 0.67 Nov 4, 2011
Enhancement rt.cpan.org #60726
On Cygwin Net::DNS now builds without Win32::IPHelper, unless a
previous version is updated that did use it.
The choice may also be set by the --iphelper or --noiphelper option
to Makefile.PL.
Fix to suppress IO::Socket::INET(6)::peerhost usage with TCP. On some systems
it doesn't work after receiving data.
Enhancement rt.cpan.org #43142
Allow ReplyHandlers to indicate that no answer should be returned
by the Net::DNS::Nameserver.
Fix rt.cpan.org #71796
Prevent TCP accepts from blocking on unfinished 3-way handshakes.
Fix rt.cpan.org #65607
Make 64bits windows work by depending on Win32::IPHelper version 0.07
Thanks to Lian Wan Situ.
Fix rt.cpan.org #66470
Named nameserver should be reachable by IPv6 too.
Fix to make tests work in jailed environments where a reply might come
from a different address than that of the loopback interface.
Feature to use a class method ReplyHandler for classes inheriting from
Net::DNS::Nameserver.
A contribution from Rob Brown.
Fix rt.cpan.org #71062
Replace the usage of the obsolete Win32::Registry module by
Win32::TieRegistry module.
Fix rt.cpan.org #68731
Fix linking of the C compiled parts of the library on Mac OS X
New improved version of the check_soa script in the contrib section.
A contribution from Dick Franks.
Fix rt.cpan.org #70830
Make t/08-online.t handle NXDOMAIN hijacking that return more then one
answer.
Fix rt.cpan.org #24525
Removed dependency on Net::IP
Fix online tests to use the library as documented and not use knowledge of the
internal workings of the classes that should be hidden.
A contribution from Dick Franks
Fix rt.cpan.org #55682
Make online tests non-fatal by default.
All interactive prompts are removed from Makefile.PL.
Online tests may still be made a requisite by using the --online-tests
option.
Major rework of Net::DNS::Domain.pm and the addition of Net::DNS::DomainName.pm
Which paves the way towards handling of character encodings and IDN.
A contribution from Dick Franks.
Fix rt.cpan.org #69174
Typo that prevented TCP traffic from being replied from the same
socket as it was received on.
Fix rt.cpan.org #68338
Suppress warnings of the deprecated use of qw as parentheses in
perl 5.14.
Enhancement rt.cpan.org #67418
A contribution from Wolfsage to perform presentation to wire format
conversion more efficiently.
Fix rt.cpan.org #67133
Gracefully handle corrupted incoming packets in Net::DNS::Nameserver.
Feature to manage serial numbers in SOA records in a modular and extensible way.
Three modules are provided. Strictly sequential, Date Encoded and
Time Encoded. A contribution from Dick Franks.
Fix rt.cpan.org #53325
Make Net::DNS::Resolver load even if /etc/resolv.conf is unreadable.
Fix rt.cpan.org #63486
Make t/08-online.t fail gracefully in stead of crash on failures.
Fix rt.cpan.org #55586
Various typo fixes.
Fix rt.cpan.org #55682
Really do not use networking functions when online tests are disabled.
Fix rt.cpan.org #64562
Replace TSIG key with the signature of the whole packet when signing
a packet, even when the TSIG key is not the first in the additional
section.
Fix rt.cpan.org #56181 and #47265
Assembly of segmented TCP traffic.
Feature rt.cpan.org #57289
Provide a configurable IdleTimeout for Net::DNS::Namserver.
Fix rt.cpan.org #53595
Fix documentation to reflect code behaviour where on successful packet
creation, the error should be ignored.
Fix rt.cpan.org #58914
Fix spelling of "algorithm"
Fix rt.cpan.org #61725
Include default domain in the search list on Win32.
Thanks Mark Rallen.
Fix rt.cpan.org #63321
A Net::DNS::Nameserver without a NotifyHandler now responds NOTIMP
to NOTIFY requests.
Fix rt.cpan.org #53595
Documentation now reflects Net::DNS::Packet construction behaviour.
to trigger/signal a rebuild for the transition 5.10.1 -> 5.12.1.
The list of packages is computed by finding all packages which end
up having either of PERL5_USE_PACKLIST, BUILDLINK_API_DEPENDS.perl,
or PERL5_PACKLIST defined in their make setup (tested via
"make show-vars VARNAMES=..."), minus the packages updated after
the perl package update.
sno@ was right after all, obache@ kindly asked and he@ led the
way. Thanks!
**** 0.66 Dec 30, 2009
Feature Truncation for Nameserver
fixes rt.cpan.org #33547 and #42744
TAKE CARE:
this feature may cause unexpected behavior for your nameservers
and can be turned off by setting Truncate to 0 during the creation
of the nameserver.
my $ns = Net::DNS::Nameserver->new(
Truncate => 0,
);
Net::DNS::Packet::truncate is a new method that is called from
within Net::DNS::Nameserver that truncates a packet according to
the rules of RFC2181 section 9.
Acknowledgement Aaron Crane for an elegant test and for
inspiration for a direction.
Feature: Added Net::DNS::Domain
Net::DNS::Domain is an attemt to consistently approach the various
ways we interface with what RFC 1035 calls <domain-name>.
The class and its test script t/02-domain.t are included to be
exposed to various architectures.
The class and its methods may be subject to change, both in terms of
naming and functionality.
A contribution by Dick Franks
Fix improved fuzzy matching of CLASS and TYPE in the Question
constructor method.
A contribution by Dick Franks.
Fix rt.cpan.org #43770
Update->rr_del() was reported broken for AAAA after 0.65.
The same bug also occured in HINFO RR.
Fix rt.cpan.org #43765
Code inconsistent with documentation for loop_once.
Note: Keeping timeout undefined in loop_once will now block until
something arrived on the socket.
Fix rt.cpan.org #47050
Fixed logic error in bgsend socket acquisition code.
Fix rt.cpan.org #47265 (partial)
Frequently Net:DNS under Windows XP has a UDP problem which is
caused by a buggy implementation of SOCKS under Windows.
One liner added to not continue UDP processing when that happens.
Feature KX RR
Added support for the KX RR, RFC2230
The implementation is trivial since the KX inherets almost all of
its functionality by inheritance from the MX RR.
Fix NSAP RR string representation
RFC1706 specifies the masterfile format to have a leading "0x" and
optional dot. This was not how the RR was represented with the
rdatastr method (and hence string and print).
Fix rt.cpan.org #52307 AAAA v4compat parsing bug
Acknowledgement: BLBLACK
Fix AAAA dynamic update
Dynamic update of AAAA caused FORMERR on the prerequisite caused
by AAAA creating rdata even when an address whas never specified.
This fix may cause difference in behavior for people who expect a
NULL address ("::") when creating a AAAA without an address
specified.
Feature HIP RR
Added support for the HIP RR, RFC5205
perldoc Net::DNS::RR::HIP for more information.
Feature DHCID RR
Added rudimentary support for the DHCID RR.
Fix rt.cpan.org #50883
This is basically #11931 but for cygwin.
Codepath in Cygwin and Win32 are now the same. This adds a
dependency in cygwin.
Acknowledgements "mikaraento"
Fix rt.cpan.org #45407 and #43190
Fixed escaping of semicolon.
Note a change in behavior:
For TXT and SPF the rdatastr method (and therefore the
print, and string method) returns the escaped format while the
chr_str_list method will return unescaped format.
Fix rt.cpan.org #43393
Typo in 01-resolver.t
Fix rt.cpan.org #43273
Added check for unitialized opcode in headermask in
Nameserver.pm
Fix rt.cpan.org #46635
Minor documentation error in opt.pm
Fix rt.cpan.org #51009
Fixed handling of empty string in Net::DNS::stripdot.
Elegant one-liner supplied by JMEHNLE.
Fix rt.cpan.org #49035
Comment parsing fixed: Semicolon in character string blocks (such
as in TXT and NPTR) were only recognized when escaped.
Also fixed the NAPTR regular expression to not interpret
"bla' 'foo" as two strings bla and foo, but as one: bla' 'foo
Fix cd flag settings
Resolver bug and fix reported by Jon Haidu.
