Changelogs for 4.9.X

4.9.0

Released: 30th of June 2023

Please review the Upgrade Guide before upgrading from versions < 4.9.x.

Bug Fixes

• Fix qname length getting out-of-sync with qname-minimization iteration count.

  References: #12963, pull request 12968

• Rewrite and fix loop that checks if algorithms are available.

  References: #12933, pull request 12936

• Fix daemonize() to properly background the process.

  References: #12928, pull request 12932

4.9.0-rc1

Released: 15nd of June 2023

Please review the Upgrade Guide before upgrading from versions < 4.9.x.

Improvements

• Escape key names that are special in the systemd-journal structured logging backend.

  References: #12468, pull request 12906

• Add feature to switch off unsupported DNSSEC algos, either automatically or manually.

  References: #12890, pull request 12893

• Expose NOD/UDR metrics.

  References: #12855, pull request 12896

• Add SOA to RPZ modified answers if configured to do so.

  References: #8232, pull request 12883

• Keep track of max depth reached and report it if !quiet.

  References: pull request 12898

• Another set of fixes for clang-tidy reports.

  References: pull request 12793, pull request 12904

Bug Fixes

• Prevent duplicate C/DNAMEs being included when doing serve-stale.

  References: pull request 12900

4.9.0-beta1

Released: 2nd of June 2023

Please review the Upgrade Guide before upgrading from versions < 4.9.x.

Improvements

• Introduce a way to completely disable root-refresh.

  References: #12848, pull request 12861

• Delint some files to make clang-tidy not report any issue.

  References: pull request 12790, pull request 12836, pull request 12837, pull request 12838

• Distinguish between recursion depth and CNAME chain length.

  References: pull request 12779, pull request 12862

• Log if the answer was marked variable by SyncRes and if it was stored into the packet cache (if !quiet).

  References: pull request 12750

Bug Fixes

• Sanitize d_orig_ttl stored in record cache.

  References: pull request 12673

• Fix clang-tidy botch with respect to spelling of “log-fail”.

  References: #12790, pull request 12829

4.9.0-alpha1

Released: 14th of April 2023

Please review the Upgrade Guide before upgrading from versions < 4.9.x.

Improvements

• Cleanup rcode enums: base one is 8 bit unsigned, extended one 16 bit unsigned

  References: pull request 12710

• Sharded and shared packet cache.

  References: pull request 12594

• More fine grained capping of packet cache TTL.

  References: pull request 12709

• Update Debian packaging for Recursor (Chris Hofstaedtler).

  References: pull request 10072, pull request 12716

• Unify shorthands for seconds in log messages (Josh Soref).

  References: pull request 12497

• Validate: Stop passing shared pointers all the way down.

  References: pull request 12674

• Re-establish “recursion depth is always increasing” invariant.

  References: pull request 12688

• OpenSSL 3.0 compatibility.

  References: pull request 12401, pull request 12412, pull request 12462, pull request 12501, pull request 12502, pull request 12513, pull request 12515, pull request 12516, pull request 12524, pull request 12540, pull request 12550

• Only store NSEC3 records in aggressive cache if we expect them to be effective.

  References: pull request 12493

• rec_control trace-regex: trace to a file or stdout instead of the general log.

  References: pull request 11777

• Unify trace logging code in syncres and validator.

  References: pull request 12434

• Stack protector for mthread stacks.

  References: pull request 12446, pull request 12695

• Change the way RD=0 forwarded queries are handled.

  References: pull request 12425

• Enable FORTIFY_SOURCE=3 when supported by the compiler.

  References: pull request 12381

• Introduce a thread-safe version of stringerror().

  References: pull request 12396

• Name recursor threads consistently with a “rec/” prefix.

  References: #11138, pull request 12399

• Rec: Warn on high (90%) mthread stack usage.

  References: pull request 12373

• Rec: Generate EDE in more cases, specifically on unreachable auths or synthesized results.

  References: pull request 12334, pull request 12691, pull request 12698

• Wrap the CURL raw pointers in smart pointers.

  References: pull request 12292

• Reorganization: move recursor specific files to recursordist.

  References: #12241, pull request 12318

• Introducing TCounters.

  References: pull request 12193, pull request 12323, pull request 12348

• If we encounter a loop in QM, continue with the next iteration.

  References: #12090, pull request 12120

• More clear trace message for cache-only lookups.

  References: #12080, pull request 12121

Bug Fixes

• Rework root priming code to allow multiple addresses per NS.

  References: #12486, pull request 12655

• Fix a dnsheader unaligned case.

  References: pull request 12672

• Serve-stale-extensions works on 30s so an hour should be 120. (Andreas Jakum)

  References: pull request 12554

• Fix doc typo (Matt Nordhoff).

  References: pull request 12539

• Logging tweaks (Josh Soref).

  References: pull request 12495

• Negcache dump code: close fd on fdopen fail.

  References: #12374, pull request 12419

• Be more careful saving errno in makeClientSocket() and closesocket()

  References: pull request 12392

• Add the ‘parse packet from auth’ error message to structured logging.

  References: pull request 12368