Update to 0.72:

**** 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.

(wiz)