Features

Merge #418: Support for DSYNC, EID, NIMLOC, SINK, TALINK, DOA, AMTRELAY and IPN resource record types.
Merge #420: Zones get state "old-serial" with `nsd-control zonestatus` when the served serial is older than the one received by the transfer daemon.
Merge #429: Add prometheus metrics

Bug Fixes

Fix re-enable to configure dns-cookies from config file, which was accidentally removed with the 4.11.1 release.
Fix #426: nsd crashes with patterns in config_apply_pattern.
Fix for #430: Confusing documentation: word "outgoing".
Fix for #430: Confusing documentation: word "outgoing". Add wording to tcp-count, xfrd-tcp-max, xfrd-tcp-pipeline options.
Fix that nsec3 prehash after a full transfer can create the nsec3 zone trees if they are needed.
Fix in nsd-mem for a zone with ixfr data.
Fix ixfr read routine for use after the temp region is freed of rr.
Fix ixfr file read to manage numlist in temp domains.
Fix nsd-mem to clean ixfr storage.
Fix log print assert in server sockets for printing '-' empty.
Fix notify_fmt test for xfrd file location.
Fix sanitizer warnings in read_uint32.
Fix sanitizer warning in tsig write of zero length mac and otherdata.
Fix to please sanitizer for ixfr store of data in cancelled state.
Fix multiple zone transfers in one reload so that xfrd does not check the update as failed and restart the transfer.
Fix read of ixfr file with rdata subdomain.
Fix test checkconf for metrics options.
Updated simdzone to include fixes for NSAP-PTR, LOC, uninitialized reads, and comment nit.
Fix #436: Fix print of RR type NSAP-PTR.
Fix unit test call to zone_parse_string and initialize padding.
Fix escape more characters when printing an RR type with an unquoted string.
Fix memory leak in the process of addzone.
Fix to update common.sh for speed of kill_pid.
Fix nsd-checkzone ixfr create cleanup on exit.