NSD 3.2.16

Features:
* New config option "ip-transparent:" to allow NSD to bind to non local
  addresses. Default no.
* Use IPV6 minimum MTU settings with TCP to reduce failures that are caused
  by delays in learning working PMTU when communicating through a tunnel.
* Bugfix #496: Support for EUI48 and EUI64 RR types. Experimental,
  turned off by default. Enable with --enable-draft-rrtypes.
* New config option "rrl-slip:" to set the average number of packets
  discarded before we send back a truncated response.
* New config option "rrl-ipv4-prefix-length:" and "rrl-ipv6-prefix-length:"
  to set the prefix lengths.
* Improved RRL logging, also print triggering query src address and QTYPE.
* Provide RRL documentation in nsd.conf.sample.

Bugfixes:
* Bugfix #357: Parent process waits until children closed down sockets,
  to prevent NSD failing to bind to sockets when restarting.
* Bugfix #487: lookup3.c determine endianness for BSD systems.
* Bugfix #491: pick program name (0th argument) as syslog identity.
* Bugfix #494: Exit with return code 1 if socket code fails.
* Bugfix #495: Wrong bufsize in dname_to_string for root.
* Fix outgoing-interface: Don't fail if family is IPv6 but only IPv4
  outgoing-interface is set, or vice versa.
* RRtypes ASFDB, RP, RT should not compress dnames.
* Check that zone directory is within chroot directory.
* Better XFR checking, fallback to AXFR (if allowed) if three malformed
  XFR packets have been seen.

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