Unbound 1.5.7rc1 prerelease

[W.C.A. Wijngaards]

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Hi,

Unbound 1.5.7rc1 prerelease is available:
http://www.unbound.net/downloads/unbound-1.5.7rc1.tar.gz
sha1 938ab7e2739aa65c261ce2ff989e27e7fcccd5c4
sha256 c614c4234776d919dd296ee750d3cf6161a2749d83010b4b4385cf21cf165861
pgpsig http://www.unbound.net/downloads/unbound-1.5.7rc1.tar.gz.asc
And windows binaries at:
http://www.unbound.net/downloads/unbound-1.5.7rc1.zip
http://www.unbound.net/downloads/unbound_setup_1.5.7rc1.exe


This release fixes a validation failure for nodata with wildcards and
emptynonterminals.  Fixes OpenSSL Library compability.  Fixes correct
response for malformed EDNS queries.  And it has Windows changes to
make unbound portable possible.  For crypto in libunbound there is
libnettle support.

Qname minimisation is implemented.  Use qname-minimisation: yes to
enable it.  This version sends the full query name when an error is
found for intermediate names.  It should therefore not fail for names
on nonconformant servers.  It combines well with
harden-below-nxdomain: yes because those nxdomains are probed by the
qname minimisation, and that will both stop privacy sensitive traffic
and reduce nonsense traffic to authority servers.  So consider
enabling both.  In this implementation IPv6 reverse lookups add
several labels per increment, because otherwise those lookups would be
very slow. [ Reference
https://tools.ietf.org/html/draft-ietf-dnsop-qname-minimisation-08 ]


Features
- - Fix #594. libunbound: optionally use libnettle for crypto.
  Contributed by Luca Bruno.  Added --with-nettle for use with
  --with-libunbound-only.
- - Implemented qname minimisation

Bug Fixes
- - Fix #712: unbound-anchor appears to not fsync root.key.
- - Fix #714: Document config to block private-address for IPv4
  mapped IPv6 addresses.
- - portability, replace snprintf if return value broken
- - portability fixes.
- - detect libexpat without xml_StopParser function.
- - isblank() compat implementation.
- - patch from Doug Hogan for SSL_OP_NO_SSLvx options.
- - Fix #716: nodata proof with empty non-terminals and wildcards.
- - Fix #718: Fix unbound-control-setup with support for env
  without HEREDOC bash support.
- - ACX_SSL_CHECKS no longer adds -ldl needlessly.
- - Change example.conf: ftp.internic.net to https://www.internic.net
- - Fix for lenient accept of reverse order DNAME and CNAME.
- - spelling fixes from Igor Sobrado Delgado.
- - Fix that malformed EDNS query gets a response without malformed EDNS.
- - Added assert on rrset cache correctness.
- - Fix #720: add windows scripts to zip bundle,
  and fix unbound-control-setup windows batch file.
- - Fix for #724: conf syntax to read files from run dir (on Windows).
  And fix PCA prompt for unbound-service-install.exe.
  And add Changelog to windows binary dist.
- - .gitignore for git users.
- - iana portlist update.

Best regards, Wouter
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