- updated to 9.9.2
  https://kb.isc.org/article/AA-00798
  Security:
  * A deliberately constructed combination of records could cause
    named to hang while populating the additional section of a
    response. [CVE-2012-5166] [RT #31090]
  * Prevents a named assert (crash) when queried for a record whose
    RDATA exceeds 65535 bytes.  [CVE-2012-4244]  [RT #30416]
  * 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]
  * ISC_QUEUE handling for recursive clients was updated to address a race
    condition that could cause a memory leak. This rarely occurred with
    UDP clients, but could be a significant problem for a server handling
    a steady rate of TCP queries. [CVE-2012-3868]  [RT #29539 & #30233]
  New Features
  * Elliptic Curve Digital Signature Algorithm keys and signatures in
    DNSSEC are now supported per RFC 6605. [RT #21918]
  * Introduces a new tool "dnssec-checkds" command that checks a zone
    to determine which DS records should be published in the parent zone,
    or which DLV records should be published in a DLV zone, and queries
    the DNS to ensure that it exists. (Note: This tool depends on python;
    it will not be built or installed on systems that do not have a python
    interpreter.)  [RT #28099]
  * Introduces a new tool "dnssec-verify" that validates a signed zone,
    checking for the correctness of signatures and NSEC/NSEC3 chains.
    [RT #23673]
  * Adds configuration option "max-rsa-exponent-size <value>;" that can

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