Changelogs for 4.2.x

4.2.3

Released: September 2nd 2020

This release contains the fix for PowerDNS Security Advisory 2020-05 (CVE-2020-17482)

Bug Fixes

• Raise an exception on invalid hex content in unknown records.

  References: pull request 9499

• mydns: add SOA to list() output

  References: #9181, pull request 9191

4.2.2

Released: 9th of April 2020

New Features

• api: add includerings option to statistics endpoint

  References: pull request 8786

Improvements

• cache: strictly enforce maximum size, and improve cleanup routine

  References: pull request 8736, pull request 9003

Bug Fixes

• fix records ending up in wrong packet section (Kees Monshouwer)

  References: pull request 9010

• avoid IXFR-in corruption when deltas come in close together (please see the IXFR-in corruption upgrade notes)

  References: pull request 9001

• fix out-of-bound access for zero length “serialized” string when using lmdbbackend. (Kees Monshouwer)

  References: pull request 8612

• bind backend: pthread_mutex_t should be inited and destroyed and not be copied

  References: pull request 8602

4.2.1

Released: 2nd of December 2019

This release fixes several bugs and makes a few features more robust or intuitive. It also contains a few performance improvements for API users.

New Features

• Add SLAVE-RENOTIFY zone metadata support (Matti Hiljanen)

  References: pull request 8549

• Add configurable timeout for inbound AXFR (Matti Hiljanen)

  References: pull request 8547

• Add CentOS 8 as builder target

  References: pull request 8428

• gmysql backend, add an option to send the SSL capability flag

  References: pull request 8341

Improvements

• API: reduce number of database connections (Kees Monshouwer)

  References: pull request 8457

• Register a few known RR types and remove an unknown one

  References: pull request 8546

• bindbackend: use metadata for also-notifies as well (Matti Hiljanen)

  References: pull request 8548

• pdnsutil increase-serial: under SOA-EDIT=INCEPTION-EPOCH, bump as if it is EPOCH

  References: #8218, pull request 8508

• API: optionally do not return dnssec info in domain list (Chris Hofstaedtler)

  References: pull request 8541

• Basic validation of $GENERATE parameters

  References: pull request 8454

Bug Fixes

• LUA view: do not crash on empty IP list

  References: #8572, pull request 8589

• API: Accept headers without spaces

  References: pull request 8576

• Avoid database state-related SERVFAILs after a LUA error

  References: #8299, pull request 8570

• Just before 4.2.0, some SQL-related fixes broke edit-zone and other features with the LMDB backend. This has been fixed now. (backport by Kees Monshouwer)

  References: #8134, pull request 8568

• Clear the caches for the entire zone after a patch operation (was apex only). The default default-api-rectify setting was ignored in patchZone(), rectify only took place when the API-RECTIFY metadata was set to “1”. (Kees Monshouwer)

  References: pull request 8497

• rfc2136, pdnsutil: somewhat improve duplicate record handling

  References: #8217, pull request 8507

4.2.0

Released: 30th of August 2019

Compared to the last release candidate, one more bug has been fixed.

The LMDB backend is incomplete in this version. Slaving zones works, loading zones with pdnsutil works, but more fine-grained edits (using edit-zone, or the REST API) fail. We hope to fix this soon in a 4.2.x release.

For an overview of features new since 4.1.x, please see the 4.2.0 announcement blog post.

Bug Fixes

• bind getAllDomains: ignore per-zone exceptions

  References: pull request 8229

4.2.0-rc3

Released: 29th of July 2019

Thanks to an overwhelming amount of testing by our fabulous user community, this release candidate contains a ton of bug fixes (and a few improvements) compared to the previous one. We hope this has shaken out all of the important bugs, so that we can release 4.2.0 soon!

This release, sadly, cripples the LMDB backend somewhat, due to transaction-related fixes for the SQL backends. We hope to fix this issue before 4.2.0, or otherwise, early in 4.2.x.

New Features

• web: make max request/response body size configurable

  References: pull request 7550

Improvements

• boost.m4 improvements

  References: pull request 8172, pull request 8173

• add metric for open TCP connections

  References: pull request 8126

• Various robustness and performance improvements around domain IDs (Kees Monshouwer)

  References: pull request 8092

• remove unused import to enable compile on illumos (Thomas Mieslinger)

  References: pull request 8064

• ixfrdist: limit XFR chunk size to 16k

  References: pull request 8051

• Fix a memory leak when sqlite3_exec() fails

  References: pull request 7998

• don’t enable the tbhandler when libc only pretends to be glibc (James Taylor)

  References: pull request 7980, pull request 8019

• Fix a leak on ‘Backend reported permanent error which prevented lookup’ error

  References: pull request 8006

• Clear CMSG_SPACE(sizeof(data)) in cmsghdr to appease valgrind

  References: pull request 7996

• deprecate SOA autocomplete in pdnsutil check-zone (Kees Monshouwer)

  References: pull request 7918

• move /var/lib/pdns to pdns-server debian package

  References: pull request 7889

• Show newer features in configure output and –version

  References: pull request 7890

• completely disable the packet when cache-ttl=0 (Kees Monshouwer)

  References: pull request 7910

• Improve error when notification comes in for non-slave zone

  References: pull request 7943

• web: add edited_serial to Zone object

  References: pull request 7962

• Adapt calidns for openbsd and other systems without rcvmmsg(2)

  References: pull request 7871

• DNSName, speed up toString() conversion

  References: pull request 7699

Bug Fixes

• packethandler: Compare TSIG key name using DNSName

  References: pull request 8168

• Make sure we always compile with BOOST_CB_ENABLE_DEBUG set to 0

  References: pull request 8169

• Fix SERVFAIL when backend returns empty DNSName

  References: pull request 8058

• stop using select() in places where FDs can be >1023

  References: pull request 8149

• pdnsutil increase-serial: set right ordername

  References: pull request 8166

• use BIGINT for notified_serial in pg schema (Klaus Darilion)

  References: pull request 8097

• Fix the accounting of servfail-queries in the distributor

  References: pull request 8056

• limit compression pointers to 14 bits

  References: pull request 8028

• catch name & IP parse errors during outgoing notify preparations

  References: pull request 8037

4.2.0-rc2

Released: 14th of June 2019

Improvements

• Make explicit lmdbbackend synchronous option

  References: pull request 7807

• Reduce mmap size for lmdb on 32 bits plus restrict number of shards

  References: pull request 7700

• sqlite3: make journal mode configurable; default to WAL

  References: pull request 7852

• Portability/building improvements:

  • Update boost.m4 to the latest version
  • Check if -latomic is needed instead of hardcoding (neheb)
  • Use net-snmp-config --netsnmp-agent-libs instead of --agent-libs
  • bump boost requirement to 1.42 unconditionally

  References: pull request 7668, pull request 7818, pull request 7861, pull request 7862

• Robustness improvements:

  • Fix warnings reported by Coverity
  • Initialize cURL before starting any thread
  • Don’t do unaligned memory access

  References: pull request 7708, pull request 7864, pull request 7865

• Always truncate when the additional records do not fit in a response (Kees Monshouwer)

  References: pull request 7873

• Remove disable-tcp option

  References: pull request 7859

• RKEY is missing algorithm field (DNS-Leo)

  References: pull request 7615

• Ignore Path MTU Discovery on UDP server socket

  References: pull request 7410

• improve logging in the web server

  References: pull request 5932

• GSQL: Log more data in error messages

  References: pull request 7584

Bug Fixes

• pdnsutil: show DS for second and further keys too

  References: #7667, pull request 7801

• LMDB improvements:

  • lmdbbackend: auth was unset in get() (always true) (Kees Monshouwer)
  • LMDB defaulted to port 0 for master addresses unless explicitly set
  • fix getAllDomains() (Kees Monshouwer)

  References: pull request 7643, pull request 7697, pull request 7784

• auth gsql getAllDomains: ignore stou errors

  References: pull request 7854

• Rectify/ENT fixes:

  • Allow updates to override existing ENT records
  • Fix ENTs removal when “replacing” new records via the API

  References: pull request 7787, pull request 7831

• Cleanup SOA editing (Kees Monshouwer)

  References: pull request 7363

• DNSSEC fixes:

  • Don’t sign insecure records with keys from other zones (Kees Monshouwer)
  • always add DS for secure zones, broken since #7523 (Kees Monshouwer)

  References: pull request 7772, pull request 7789

misc

• API: mark set-ptr as deprecated (zeha)

  References: pull request 7797

• add DoH support to sdig

  References: pull request 7832

• dumresp: add TCP support

  References: pull request 7655

• pdnsutil, dnswasher: add support for encrypting IP addresses

  References: pull request 7481

• auth API, pdnsutil: improve backend transaction correctness

  References: pull request 7891

• detect SOA cache pollution caused by broken backends (Kees Monshouwer)

  References: pull request 7881

• speedup getUpdatedMasters() for the gsql backends (Kees Monshouwer)

  References: pull request 7460

• pdns_control reopens geoip databases on reload (jpmens)

  References: pull request 7753

• b2b-migrate did not open a transaction, breaking it for lmdb

  References: pull request 7696

• No longer filter DNSSEC metadata when DNSSEC is enabled in gsql

  References: pull request 7706

• Rectify for ent records in narrow zones was slightly wrong. (Kees Monshouwer)

  References: pull request 7580

• Clear caches (meta-data, keys) on domain deletion

  References: pull request 7529

• optionally reuse Lua state

  References: pull request 7869, pull request 7897

• Various robustness improvements:

  • Do not busy loop if we get lots of notifies.
  • Improve error reporting with garbage in the ‘master’ field of the database
  • Do not exit on exception resolving addresses to notify
  • Auth ringbuffer summaries were case sensitive & accounted delegations incorrectly
  • plug mysql_thread_init memory leak
  • Ensure we increase the number of queued queries before decreasing it

  References: pull request 7503, pull request 7517, pull request 7569, pull request 7587, pull request 7662, pull request 7790

• disable dnssec pre-processing for non dnssec zones and avoid a lot of isSecuredZone() calls (Kees Monshouwer)

  References: pull request 7523

• rename ‘supermaster’ option to ‘superslave’

  References: pull request 7723

4.2.0-rc1

Released: 19th of March 2019

New Features

• Add dnspcap2calidns to convert PCAP to the calidns format.

  References: pull request 6564

• Add quiet modifier to pdnsutil rectify-all-zones command.

  References: pull request 6374

• Authoritative LMDB backend.

  References: pull request 7453

• Adds the glorious log-log histograms.

  References: pull request 6969

• LUA Records (yes we know it is “Lua”).

  References: pull request 6171

• LDAP misc updates:

  • ALIAS support,
  • DNAME support.

  References: #5260, pull request 5821

Removed Features

• Remove api-logfile flag and grep API endpoint.

  References: pull request 7025

• Drop api-readonly configuration setting.

  References: pull request 6845

Improvements

• Use a less expensive way to get memory stats for real-memory-usage.

  References: pull request 7502

• Be smarter about trimming whitespace when creating records from ASCII.

  References: pull request 7412

• More sandboxing using SystemD’s features.

  References: pull request 6634

• Fix attempt to restrict / speed-up additional processing to auth zone.

  References: pull request 7353

• Make pdns_control notify * also notify slaves zones.

  References: pull request 7293

• Zero out QTYPE response numbers in our statistics. Makes Valgrind usable on auth again.

  References: pull request 7348

• Improve memory handling for NSEC(3) records with lots of types.

  References: pull request 7345

• Use a cache-able soa record for the serial check caused by a notify.

  References: pull request 7245

• dns_random: Implement new dns_random.

  References: pull request 5274

• Remove theLog and theL and replace this with a global g_log.

  References: pull request 6358

• Lower ‘packet too short’ loglevel.

  References: pull request 6312

• Remove all traces of selectmplexer, fix up pollmplexer.

  References: pull request 6230

• Change from time_t to uint32_t for serial in calculateSOASerial.

  References: #1010, pull request 5068

• Use toLogString() for logging and throwing.

  References: pull request 5979

• Remove obsolete EDNS PING code. (@zeha)

  References: pull request 6156

• Add type filter to search-data api.

  References: #5430, pull request 7326

• Add rcode response statistics on API.

  References: #7357, pull request 7359

• Use commas instead of spaces when setting Zone Masters via the REST API.

  References: #6451, pull request 7491

• Improve RRset validation.

  References: pull request 7463

• Fix a couple of Swagger / OpenAPI issues.

  References: pull request 7286

• API: Add TSIG key manipulation endpoints.

  References: pull request 5988

• Make API changes do a rectify by default, add an option to disable.

  References: pull request 7233

• Add zone lookup by /zones?zone=example.org.

  References: pull request 6668

• API export function output change to add IN to the output.

  References: pull request 6649

• Send correct response codes for the CryptoKey endpoints.

  References: #6652, pull request 6662

• Return status 409 if domain already exists.

  References: pull request 6325

• Expose ResponseStats via REST API.

  References: pull request 2603

• Return 404 for non-existing zones.

  References: pull request 6076

• check-all-zones: find duplicate zones and SOAs.

  References: pull request 6843

• calidns: Accurate qps targets.

  References: pull request 6774

• pdns_control notify: Handle slave w/o renotify properly.

  References: pull request 6691

• pdnsutil: Occlusion and auth check improvements.

  References: pull request 6653

• pdnsutil: also load modules through the load-modules directive.

  References: pull request 6594

• calidns: Add quiet, minimum-success-rate options to use from a script.

  References: pull request 6601

• calidns: Add an option to read ECS values from the query file, skip comments.

  References: pull request 6526

• calidns: Add a maximum-qps option to stay at a given stable load.

  References: pull request 6525

• Add TCP support for ALIAS.

  References: pull request 6331

• calidns: Add the --ecs parameter to add random ECS values to queries.

  References: pull request 6326

• Add an --initial-port option to dnsreplay.

  References: pull request 6166

• Add colour to diff output of pdnsutil.

  References: pull request 6063

• remotebackend: Implement getUpdatedMasters.

  References: #7444, pull request 7448

• Report checkKey errors upwards.

  References: pull request 7516

• ixfrdist: Add option to limit AXFR record count.

  References: pull request 6872

• Lua records: Add useragent option to ifurlup and set a default.

  References: #7393, pull request 7490

• Lua: Expose dns_random as pdnsrandom.

  References: #6853, pull request 7492

• Error on DNSSEC default misconfiguration.

  References: pull request 7340

• Fallback to SHA1 for the signatures cache if MD5 is not available.

  References: pull request 7284

• Improved Lua records - Added all selector, and backupSelector fallbacks.

  References: pull request 6894

• Configure --enable-pdns-option --with-third-party-module.

  References: pull request 7026

• Address some known LUA Records issues:

  • Better check input lists,
  • Report lua wildcards errors,
  • Exposes DNSName::getRawLabels in lua env,
  • Better document LUA functions and objects.

  References: #6693, pull request 6731

• Remove out-of-zone-additional-processing setting.

  References: pull request 6869

• Improve RSA key warnings.

  References: pull request 6958

• Use unique pointers in the OpenSSL signer.

  References: pull request 7069

• Store NetmaskTree nodes in a set for faster removal.

  References: pull request 6962

• ALIAS: Respond SERVFAIL on non-NOERRORs from resolver.

  References: pull request 6727

• Add support for OpenSSL 1.1.1’s ed25519 and ed448 for signing and verifying.

  References: pull request 6910

• Add incremental slave-check backoff also for failed AXFR.

  References: pull request 6822

• Enhance query-logging with timing for MySQL, PostgreSQL and SQLite.

  References: pull request 6975

• Apply ALIAS scopemask after chasing.

  References: pull request 6811

• Fix compilation with LibreSSL 2.7.0+.

  References: pull request 6948

• Remove GOST and Botan support.

  References: pull request 6921

• Add option send-signed-notify to send NOTIFYs without TSIG signature.

  References: pull request 6825

• Add the serials when logging the final result of a slave check.

  References: pull request 6824

• Implement a smarter dedup for filling packets in auth.

  References: pull request 6730

• luawrapper: Report caught std::exception as lua_error.

  References: pull request 6658

• Reject duplicate RRsets in patchZone.

  References: pull request 6633

• Ensure ALIAS answers over TCP have correct name.

  References: pull request 6659

• Fix some minor issues for presigned (large) bind zones.

  References: pull request 6561

• bindbackend: Refuse launch suffixes.

  References: pull request 6558

• Add missing overrides.

  References: pull request 6530

• Avoid an isane amount of new backend connections during an AXFR.

  References: pull request 6427

• Add support for MB and MG RR types.

  References: pull request 6377

• Add actual EDNS buffer size logging, not just our interpretation.

  References: pull request 6102

• Lua2 backend: This is a rewrite of the lua backend. It uses AuthLua4 as basis and more strongly typed access using LuaContext.

  References: pull request 6157

• Make requests always return to sender, for usage in multimaster slave zones. Also - made sure that the master that is questioned for updates will be selected randomly, to prevent repeatedly asking a dead master for updates.

  References: #3602, pull request 5361

• Reject updates if they would lead to CNAME+Other data.

  References: pull request 6276

• Fix rectify (ordername) for non-DNSSEC zones.

  References: pull request 6243

• pkcs11signers: Fix yubikey NEO to work.

  References: pull request 6278

• Make outgoing-query-address and outgoing-query-address6 behaviours equivalent.

  References: pull request 6100

• GeoIPbackend improvements:

  • Adds MMDB support. Now geoip backend can be compiled without geoip support,
  • Adds location support,
  • Fixes SERVFAIL if expansion is empty.

  References: #5268, pull request 6128

• Fix syntax error for replace-rrset. (@lordievader)

  References: pull request 6295

• Add XPF support to sdig, PowerDNS Recursor and dnsdist.

  References: #5079, #5594, #5654, pull request 6220

• Check more thoroughly the source of UDP answers.

  References: pull request 5960

• Slave cleanups. (@zeha)

  References: pull request 6162

• pdns: Improve record parsing

  References: #2611, pull request 6158

• Changes to compile and run on NetBSD.

  References: pull request 6146

• Forbid creating algo 5/8/10 keys with out-of-spec sizes.

  References: pull request 6139

• Add Draft of Swagger spec for Authoritative Server HTTP API.

  References: #5854, pull request 5862

• API: Add response-by-qtype and response-by-rcode on /statistics endpoint

  References: #7357, pull request 7359

• Several improvements to processing of notifies.

  • Turn off supermaster support by default (adds new setting).
  • PowerDNS was wasting a lot of queries while processing notifies.
  • Use comboaddress for IPs (was strings)

  References: pull request 6021

Bug Fixes

• Fix dns_random() always returning 0 when the minimum acceptable value is 0.

  References: pull request 7382

• Lower udp-truncation-threshold by default to 1232.

  References: pull request 7320

• Prevent leak of file descriptor if running out of ports for incoming AXFR.

  References: pull request 7294

• Fix API search failed with “Commands out of sync; you can’t run this command now”.

  References: #7545, pull request 7546

• Improve handling of out of range modified_at value.

  References: #6114, pull request 7488

• Prevent more than one CNAME / SOA record in the same RRset.

  References: #7277, pull request 7278

• Check DNSNames that should be hostnames.

  References: pull request 6871

• Make sure that we use strict weak records ordering in the API. (Doing this avoids concurrent records / comments iteration from running out of sync.)

  References: pull request 6780, pull request 6816

• Remove ENTs when “replacing” new records.

  References: pull request 6647

• Restrict creation of OPT and TSIG rrsets.

  References: pull request 6614

• Increase serial after DNSSEC related updates.

  References: pull request 6571

• Fix output order of pdnsutil add-record.

  References: pull request 7482

• sdig: Handle non-IN class records better.

  References: pull request 7148

• Dnsscope off-by-one + domain-filter.

  References: pull request 7364

• pdns_notify: Support hostname for notification.

  References: #7319, pull request 7244

• Make edit-zone catch zoneparser exceptions as well.

  References: pull request 6859

• calidns: Don’t issue socket buffer or SCHED_FIFO warnings in quiet mode.

  References: pull request 6617

• dnsreplay: Bail out on a too small outgoing buffer.

  References: pull request 6580

• pdnsutil: Use new domain in b2bmigrate.

  References: pull request 6559

• Link dnspcap2protobuf against librt when needed.

  References: pull request 6487

• Rather than crash, sheepishly report no file/linenum in pdnsutil.

  References: pull request 6354

• IXFR: correct behavior of dealing with DNS Name with multiple records; speed up IXFR transaction.

  References: pull request 6172

• Fix invalid SOA record in MySQL which prevented the authoritative server from starting.

  References: #7493, pull request 7496

• Avoid infinite loop in mydnsbackend.

  References: pull request 7475

• Fix listing zones incl. AXFR.

  References: pull request 6122

• Fix static lookup when using weighted records on multiple record types.

  References: pull request 7219

• Forbid 0 as weight value.

  References: #7219, pull request 7227

• Insufficient validation in the HTTP remote backend (CVE-2019-3871, PowerDNS Security Advisory 2019-03)

  References: #7573, pull request 7576

• Correctly interpret an empty AXFR response to an IXFR query.

  References: pull request 7494

• Respect packet size limits, even with ECS and TSIG.

  References: pull request 7352

• Fix dot stripping in setcontent().

  References: #7429, pull request 7459

• Do not compress the root since LMDB backend cannot set a root zone with a compressible SOA record.

  References: #7471, pull request 7472

• Avoid duplicate NSEC3 records in presigned zones in LMDB backend.

  References: #7453, pull request 7470

• Fix replying from ANY address for non-standard port.

  References: pull request 7341

• Fix a few off-by-one errors.

  References: pull request 7288

• On incoming NOTIFY load our serial from backend to have it available during slave-check.

  Also log ourserial to ease debugging.

  References: #6821, pull request 6823

• Remove autoserial from the Authoritative Server. Serial 0 was a little bit too special in PowerDNS.

  References: #1355, #1366, pull request 6838

• Handle ANY queries with Lua records.

  References: pull request 7228

• geoip: properly delete libGeoIP return values.

  References: pull request 7217

• SOA-check: reject NXDOMAIN response and check label of RR against qname.

  References: pull request 7067

• Fix carbon-instance / carbon-namespace inconsistencies.

  References: pull request 7201

• Fix up the BIND config files on upgrade.

  References: pull request 7134

• geoipbackend: Handle read error for config file.

  References: pull request 7024

• Make sure we escape 127 in TXT records.

  References: pull request 7017

• Add support for NONE SOA-EDIT kind.

  References: pull request 4598

• Respond correctly to DS query at delegation in unsigned zone.

  References: pull request 6923

• Release memory in case of error in the OpenSSL ECDSA constructor.

  References: pull request 6917

• Actually truncate truncated responses.

  References: #6912, pull request 6913

• RFC2136 fixes.

  References: pull request 6858

• Remove SOA-check backoff on incoming NOTIFY and fix d_lock handling.

  References: pull request 6857

• check-zone: allow null MX, SRV.

  References: pull request 6834

• Workaround MariaDB pretending to be MySQL.

  References: pull request 6844

• Reset the TSIG state between queries.

  References: pull request 6738

• Only parse resolv.conf once - this avoids race conditions.

  References: pull request 6495

• Sign CDS/CDNSKEY RRsets with the KSK.

  References: pull request 6655

• Initialize some missed qtypes: WKS, SMIMEA.

  References: pull request 6686

• geoipbackend: Check GeoIP_id_by_addr_gl and GeoIP_id_by_addr_v6_gl return value.

  References: pull request 6677

• stubresolver: Improve locking.

  References: pull request 6499

• gmysql: Use future-proof statement for transaction isolation.

  References: pull request 6648

• Geoip: Fix poisoning of cache when hit service’s default network.

  Also includes an optimization to make lookups faster.

  References: #6584, pull request 6585

• Avoid interleaved access to B (via d_dk). Before this patch, the meta lookup would interfere with the already-started B.lookup. This caused failures with odbc/MSSQL.

  References: pull request 6531

• Add return 0 for correct exit of set-kind and set-account.

  References: pull request 6481

• Recheck serial when AXFR is done.

  References: pull request 6484

• Report unparseable data in stoul invalid_argument exception.

  References: pull request 6396

• Fix handling of user defined AXFR filters return values.

  References: pull request 6370

• Reload /etc/resolv.conf when modified.

  References: #6263, pull request 6342

• Make check-zone error on rows that have content but shouldn’t.

  References: pull request 6297

• bindbackend: handle std::exception during startup zone-parsing.

  References: pull request 6152

• gmysql-backend: set unsigned attribute on notified_serial column.

  References: #5915, pull request 6019

• Escaping unusual DNS label octets in DNSName is off by one.

  References: pull request 6018

• Update EDNS Option code list.

  References: pull request 6155

• Remove serializeSOAData, refactor calculate/edit/increaseSOA.

  References: pull request 4547

• Add methods missing from AuthLua4 when Lua support is disabled.

  References: pull request 6132

• Init openssl and libsodium before chrooting in pdnsutil.

  References: pull request 6129

• Fix uninitialized index in Lua’s DNSPacket::getRRS() binding.

  References: pull request 6107

• Fix out of bounds exception in CAA processing.

  References: #6089, pull request 6103

• Forbid label compression in ALIAS wire format.

  References: #6028, pull request 6029

misc

• pdnsutil.1 & settings:

  • Add Ed25519 and Ed448,
  • Document ECC keysizes,
  • Remove old algos.

  References: pull request 7187

• Name threads in the programs.

  References: pull request 6997

• dnsreplay: Add more checks against bogus PCAP.

  References: pull request 6582

• geoipbackend: Allow empty content for ENT record.

  References: #7195, pull request 7196

• Add namespace and instance variable to carbon key.

  References: #2362, #6951, pull request 6959

• LuaWrapper: Disable maybe uninitialized warnings with boost optional.

  References: pull request 6769

• Improve tests and two bugfixes:

  • Fix xfrIP to reject invalid ips,
  • Accept seconds since epoch in RRSIG timestamps too.

  (@stbuehler)

  References: #6101, #6120, pull request 6124