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BIND 9.9.6b1 Release Notes
Author: Jeremy Reed Reference Number: AA-01144 Views: 2279 Created: 2014-03-14 16:48 Last Updated: 2014-07-03 01:47 0 Rating/ Voters

BIND 9.9.6b1 is the first development release of BIND 9.9.6, an Extended Support Version (ESV) of BIND 9.

This document summarizes feature changes from BIND 9.9.5 to BIND 9.9.6b1. 

Please see the CHANGES file in the source code release for a complete list of all changes, including bug fixes.


The latest versions of BIND 9 software can always be found on our web site at There you will find additional information about each release, source code, and pre-compiled versions for Microsoft Windows operating systems.


Professional support is provided by DNSco. Information about paid support options is available at Free support is provided by our user community via a mailing list. Information on all public email lists is available at

New Features
  • Support for CDS and CDNSKEY resource record types was added. For details see the proposed Informational Internet-Draft "Automating DNSSEC Delegation Trust Maintenance" at [RT #36333]
  • Added version printing options to various BIND utilities. [RT #26057] [RT #10686]
  • On Windows, enable the Python tools "dnssec-coverage" and "dnssec-checkds". [RT #34355]
  • Added a "no-case-compress" ACL, which causes named to use case-insensitive compression (disabling change #3645) for specified clients. (This is useful when dealing with broken client implementations that use case-sensitive name comparisons, rejecting responses that fail to match the capitalization of the query that was sent.) [RT #35300]
Feature Changes

  • The Windows installer now places files in the Program Files area rather than system services. [RT #35361]
  • When an SPF record exists in a zone but no equivalent TXT record does, a warning will be issued.  The warning for the reverse condition is no longer issued. See the check-spf option in the documentation for details. [RT #36210]
  • "named" will now log explicitly when using rndc.key to configure command channel. [RT #35316]
  • The default setting for the -U option (setting the number of UDP listeners per interface) has been adjusted to improve performance. [RT #35417]
  • Aging of smoothed round-trip time measurements is now limited to no more than once per second, to improve accuracy in selecting the best name server. [RT #32909]
  • DNSSEC keys that have been marked active but have no publication date are no longer presumed to be publishable. [RT #35063]
Bug Fixes
  • Don't call qsort() with a null pointer, and disable the GCC 4.9 "delete null pointer check" optimizer option. This fixes problems when using GNU GCC 4.9.0 where its compiler code optimizations may cause crashes in BIND. For more information, see the operational advisory at [RT #35968]
  • Fixed a bug that could cause repeated resigning of records in dynamically signed zones. [RT #35273]
  • Fixed a bug that could cause an assertion failure after forwarding was disabled. [RT #35979]
  • Fixed a bug that caused SERVFAILs when using RPZ on a system configured as a forwarder. [RT #36060]
  • Worked around a limitation in Solaris's /dev/poll implementation that could cause named to fail to start when configured to use more sockets than the system could accomodate. [RT #35878]
Thank You

Thank you to everyone who assisted us in making this release possible. If you would like to contribute to ISC to assist us in continuing to make quality open source software, please visit our donations page at

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