Log Message:
Update bind96 to 9.6.3.1.ESV.9pl1 (BIND 9.6-ESV-R9-P1).
Please refer CHANGES file for complete changes and here is quote from
release announce.

Introduction

   BIND 9.6-ESV-R9-P1 is the latest production release of BIND 9.6-ESV.

Security Fixes

   Prevents exploitation of a runtime_check which can crash named
   when satisfying a recursive query for particular malformed zones.
   (CVE-2013-3919) [RT #33690]

   Prevents a named assert (crash) when validating caused by using
   "Bad cache" data before it has been initialized. [CVE-2012-3817]
   [RT #30025]

   A condition has been corrected where improper handling of
   zero-length RDATA could cause undesirable behavior, including
   termination of the named process. [CVE-2012-1667] [RT #29644]

New Features

   Adds a new configuration option, "check-spf"; valid values are
   "warn" (default) and "ignore".  When set to \ 
"warn", checks SPF
   and TXT records in spf format, warning if either resource record
   type occurs without a corresponding record of the other resource
   record type.  [RT #33355]

   Adds support for Uniform Resource Identifier (URI) resource
   records. [RT #23386]

   Adds support for Host Identity Protocol (HIP) resource records
   [RT #19384]

   Adds support for the EUI48 and EUI64 RR types. [RT #33082]

   Adds support for the RFC 6742 ILNP record types (NID, LP, L32,
   and L64). [RT #31836]

   The contributed queryperf utility has been improved, now retaining
   better round trip time statistics. [RT #30128]