Changelog

1.9.0-alpha1

Released: 18th of September 2023

Please review the Upgrade Guide before upgrading.

New Features

• Add Lua bindings to access selector and action

  References: #13007, pull request 13013

• Add an option to write grepq’s output to a file

  References: pull request 12689

Improvements

• Add support for incoming DoH via nghttp2

  References: pull request 12678

• Add metrics for health-check failures

  References: pull request 13009

• Fix building our fuzzing targets from a dist tarball

  References: pull request 13145

• Add a DNSHeader:getTC() Lua binding

  References: pull request 13135

• Stop passing -u dnsdist -g dnsdist on systemd’s ExecStart

  References: pull request 13088

• Use arc4random only for random values

  References: pull request 12931

Removals

• Change the default for building with net-snmp from auto to no

  References: pull request 13168

1.8.1

Released: 8th of September 2023

Please review the Upgrade Guide before upgrading from versions < 1.8.x.

New Features

• Allow declaring custom metrics at runtime

  References: pull request 13123

Improvements

• Stop using the now deprecated ERR_load_CRYPTO_strings() to detect OpenSSL

  References: pull request 13121

• Automatically load Lua FFI inspection functions

  References: pull request 13122

• Increment the “dyn blocked” counter for eBPF blocks as well

  References: pull request 13125

• Make DNSQType.TSIG available (Jacob Bunk)

  References: pull request 13133

Bug Fixes

• Fix a crash when X-Forwarded-For overrides the initial source IP

  References: pull request 12977

• Fix cache hit and miss metrics with DoH queries

  References: #12762, pull request 13131

• Fix a memory leak when processing TLS tickets w/ OpenSSL 3.x

  References: pull request 13130

• Fix a race when creating the first TLS connections

  References: pull request 13178

• Print the received, invalid health-check response ID

  References: pull request 12820

• Account for the health-check run time between two runs

  References: pull request 12821

• Properly set the size of the UDP health-check response

  References: pull request 12822

• Add the query ID to health-check log messages, fix nits

  References: pull request 12823

• Stop setting SO_REUSEADDR on outgoing UDP client sockets

  References: pull request 12824

• Properly handle short reads on backend upgrade discovery

  References: pull request 13116

• Undo an accidentally change of disableZeroScope to disableZeroScoping (Winfried Angele)

  References: pull request 13117

• Fix the group of the dnsdist.conf file when installed via RPM

  References: #13027, pull request 13118

• Work around Red Hat 8 messing up OpenSSL’s headers and refusing to fix it

  References: #12926, pull request 13119

• Fix a typo for libedit in the dnsdist features list

  References: pull request 13120

• Fix webserver config template for our docker container (Houtworm)

  References: pull request 13124

• YaHTTP: Prevent integer overflow on very large chunks

  References: pull request 13127

• Fix the console description of PoolAction and QPSPoolAction (phonedph1)

  References: pull request 13128

• Properly handle reconnection failure for backend UDP sockets

  References: #12711, pull request 13129

• SpoofAction: copy the QClass from the request (Christof Chen)

  References: pull request 13132

• Properly record self-answered UDP responses with recvmmsg

  References: pull request 13150

1.7.4

Released: 14th of April 2023

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

New Features

• Add getPoolNames() function, returning a list of pool names (Christof Chen)

  References: #12074, pull request 12621

Bug Fixes

• Fix the health-check timeout computation for DoH backend

  References: pull request 12327

• Skip invalid OCSP files after issuing a warning

  References: #12341, pull request 12421

• Ignore unclean TLS session shutdown

  References: #12236, pull request 12237

• Properly encode json strings containing binary data

  References: #9349, pull request 12260

• Properly update rcode-related metrics on RCodeAction hits

  References: #11498, pull request 12484

• Fix building with boost < 1.56

  References: #12177, pull request 12183

• lock.hh: include <stdexcept>

  References: #12453, pull request 12460

• dnsdist-protocols.hh: include <cstdint> (Sander Hoentjen)

  References: pull request 12569

• Fix the formatting of ‘showServers’

  References: pull request 12535

• Properly record the incoming flags on a timeout

  References: #11905, pull request 12529

• Prevent an underflow of the TCP d_queued counter

  References: #12357, pull request 12365

• Properly handle single-SOA XFR responses

  References: #12099, pull request 12100

• Also reconnect on ENETUNREACH. (Asgeir Storesund Nilsen)

  References: #4155, pull request 11830

• Fix a bug in SetEDNSOptionAction

  References: #11728, pull request 11729

• Fix the number of concurrent queries on a backend TCP conn

  References: pull request 11718

1.8.0

Released: 30th of March 2023

Please review the Upgrade Guide before upgrading from versions < 1.8.x.

Bug Fixes

• Fix ‘Unknown key’ issue for actions and rules parameters

  References: pull request 12687

• Fix a dnsheader unaligned case

  References: pull request 12672

• secpoll: explicitly include necessary ctime header for time_t

  References: pull request 12654

1.8.0-rc3

Released: 16th of March 2023

Please review the Upgrade Guide before upgrading from versions < 1.8.x.

Improvements

• Report per-incoming transport latencies in the web interface

  References: pull request 12638

• Report the TCP latency for TCP-only Do53, DoT and DoH backends

  References: pull request 12648

• Count hits in the StatNode

  References: pull request 12626

Bug Fixes

• Use the correct source address when harvesting failed

  References: pull request 12641

• Fix a race when a cross-protocol query triggers an IO error

  References: pull request 12639

1.8.0-rc2

Released: 9th of March 2023

Please review the Upgrade Guide before upgrading from versions < 1.8.x.

Improvements

• Add Lua bindings for PB requestorID, deviceName and deviceID

  References: pull request 12615

• Clean up the fortify and LTO m4 by not directly editing flags

  References: pull request 12593

• YaHTTP: Better detection of whether C++11 features are available

  References: pull request 12589

• Skip signal-unsafe logging when we are about to exit, with TSAN

  References: pull request 12587

Bug Fixes

• Fix compilation with DoH disabled (Adam Majer)

  References: pull request 12588

• Only increment the ‘servfail-responses’ metric on backend responses (phonedph1)

  References: pull request 12592

• Fix the harvesting of destination addresses

  References: pull request 12586

1.8.0-rc1

Released: 23rd of February 2023

Please review the Upgrade Guide before upgrading from versions < 1.8.x.

New Features

• Allow randomly selecting a backend UDP socket and query ID

  References: pull request 11163

• Dynamic discovery and upgrade of backends

  References: pull request 11293

• Add support for password protected PKCS12 files for TLS configuration

  References: pull request 11027

• Add experimental support for TLS asynchronous engines

  References: pull request 10734

• Add an API endpoint to remove entries from caches

  References: #10468, #6154, pull request 12473

• Add support for user defined metrics

  References: pull request 11674

• Add the ability to change the qname and owner names in DNS packets

  References: pull request 12417

• Implement async processing of queries and responses

  References: pull request 12388

• Add the ability to cap the TTL of records after insertion into the cache

  References: pull request 12384

• Add SetReducedTTLResponseAction

  References: pull request 12400

• Add a Lua FFI interface for metrics

  References: pull request 12385

• Add a new chain of rules triggered after cache insertion

  References: pull request 12280

• Added XDP middleware for dropped/redirected queries logging (Mini Pierre)

  References: pull request 11020

• Implement a ‘lazy’ health-checking mode

  References: pull request 12065

• Add getPoolNames() function, returning a list of pool names (Christof Chen)

  References: #12073, pull request 12074

• Cleaner way of getting the IP/masks associated to a network interface

  References: pull request 12082

• Add Lua helpers to look into the content of DNS payloads

  References: pull request 12022

• Add more Lua bindings for network-related operations

  References: pull request 11994

• Add Lua binding for inspecting the in-memory ring buffers

  References: pull request 12008

• Add Lua bindings to look up domain and IP addresses from the cache

  References: pull request 12007

• Implement SuffixMatchTree::getBestMatch() to get the name that matched

  References: pull request 11698

• Use BPF_MAP_TYPE_LPM_TRIE for range matching (Y7n05h)

  References: pull request 11526

• Add getVerbose() function

  References: pull request 11637

• Add Lua bindings to access the DNS payload as a string

  References: pull request 11606

• Add setVerbose() to switch the verbose mode at runtime

  References: pull request 11567

• Add a ‘getAddressAndPort()’ method to DOHFrontend and TLSFrontend objects

  References: #11434, pull request 11547

• Add setTCPFastOpenKey() (Y7n05h)

  References: #9994, pull request 11497

• Add Lua FFI helpers for protocol and MAC address access, proxy protocol payload generation

  References: pull request 11173

• Add support to store mac address in query rings

  References: pull request 11184

• Add newThread() function

  References: pull request 11126

• Lua support to remove resource records from a response

  References: pull request 11098

• Add support to spoof a full self-generated response from lua

  References: pull request 11051

• Add a Lua FFI helper to generate proxy protocol payloads

  References: pull request 10949

• Add Lua bindings to get the list of network interfaces, addresses

  References: pull request 11017

• Add lua support to limit TTL values of responses

  References: pull request 11059

Improvements

• Merge the ‘main’ and ‘client’ DoH threads in single acceptor mode

  References: pull request 12386

• Speed up DoH handling by preventing allocations and copies

  References: pull request 12000

• OpenSSL 3.0: Offer TLS providers as an alternative to TLS engines

  References: pull request 12423

• Skip invalid OCSP files after issuing a warning

  References: #12341, pull request 12421

• Gracefully handle a failure to create a TLS server context

  References: pull request 12435

• Ignore unclean TLS session shutdown

  References: #12236, pull request 12237

• Skip DoT/DoH frontend when a tls configuration error occurs

  References: pull request 11675

• More useful default ports for DoT/DoH backends

  References: pull request 11415

• Libssl: Load only the ciphers and digests needed for TLS, not all of them

  References: pull request 11166

• Add support for metadata in protobuf messages

  References: pull request 12520

• Enable experimental kTLS support with OpenSSL on Linux

  References: pull request 12545

• Improve the scalability of MaxQPSIPRule()

  References: pull request 12537

• Reduce useless wake-ups from the event loop

  References: pull request 12276

• Faster cache-lookups for DNS over HTTPS queries

  References: pull request 11901

• Add a ‘single acceptor thread’ build option, reducing the number of threads

  References: pull request 12003

• Make recording queries/responses in the ringbuffers optional

  References: pull request 11883

• Slightly reduce contention around a pool’s servers

  References: pull request 11852

• Only call getsockname() once per incoming DoH connection

  References: pull request 11851

• Set TCP_NODELAY on the TCP connection to backends

  References: pull request 11734

• Avoid allocating memory in LB policies for small number of servers

  References: pull request 11689

• SuffixMatchTree: Improve lookup performance

  References: pull request 11624

• Change dns_tolower() and dns_toupper() to use a table

  References: pull request 11655

• Scan the UDP buckets only when we have outstanding queries

  References: #11576, pull request 11577

• Prevent allocations in two corner cases

  References: pull request 11531

• Only allocate the health-check mplexer when needed

  References: #11422, pull request 11437

• Defer the actual allocation of the ring buffer entries

  References: pull request 11171

• Add an option for unauthenticated access to the dashboard

  References: #10360, pull request 12474

• Add an option for unauthenticated access to the API

  References: pull request 11514

• Add support for custom prometheus names in custom metrics

  References: pull request 12553

• Slightly reduce the number of allocations in API calls

  References: pull request 11987

• Add more detailed metrics

  References: pull request 11716

• Compute backend latency earlier, to avoid internal latency

  References: pull request 11707

• Add ‘statistics’ to the general API endpoint

  References: pull request 11659

• Add a counter for the number of cache cleanups

  References: pull request 11656

• Enable Link-Time Optimization for our packages

  References: pull request 12543

• Stop using the deprecated boost::optional::get_value_or

  References: pull request 12538

• List version number early

  References: #10932, pull request 12530

• Remove duplicate code in xdp (Y7n05h)

  References: pull request 12518

• Warn on unsupported parameters (Aki Tuomi)

  References: pull request 10115

• Add unit tests for the Lua FFI interface

  References: #12417, pull request 12469

• Refactor ‘cannot be used at runtime’ handling

  References: pull request 12492

• Fail if we can’t check the configuration file

  References: #7611, pull request 12481

• Add a configure option to enable LTO

  References: pull request 12441

• Add a new configure option to initialize automatic variables

  References: pull request 12427

• Enable FORTIFY_SOURCE=3 when supported by the compiler

  References: pull request 12381

• Proper accounting of response and cache hits

  References: pull request 12405

• Support OpenSSL 3.0 for ipcipher CA6 encryption/decryption

  References: pull request 12411

• Stronger guarantees against data race in the UDP path

  References: pull request 12383

• Add bindings for the current and query times in DQ/DR

  References: pull request 12402

• Raise RLIMIT_MEMLOCK automatically when eBPF is requested (Yogesh Singh)

  References: pull request 11554

• Systemd: Add “After” dependency on time-sync.target (Kevin P. Fleming)

  References: #11153, pull request 12248

• DNSName constructor use memchr instead of strchr and cleanup with string_view (Axel Viala)

  References: pull request 11863

• Fix building with boost < 1.56

  References: #12142, pull request 12177

• Retain output when expunging from multiple caches (Christof Chen)

  References: #12075, pull request 12077

• Add build-time options to disable the dynamic blocks and UDP response delay

  References: pull request 11993

• Add missing thread names

  References: pull request 11992

• Add a build option (define) to prevent loading OpenSSL’s errors

  References: pull request 11988

• Properly load ciphers and digests with OpenSSL 3.0

  References: #11853, pull request 11862

• Add local ComboAddress parameter for SBind() at TeeAction() (@FredericDT)

  References: pull request 11889

• Do not keep the mplexer created for the initial health-check around

  References: pull request 11844

• Use getrandom() if available

  References: pull request 11723

• Implement a limit of concurrent connections to a backend

  References: pull request 11713

• Fill ringbuffers with responses served from the cache

  References: #11585, pull request 11712

• Bind to the requested src interface without a src address

  References: pull request 11696

• Log listening addresses and version at the ‘info’ level

  References: pull request 11711

• Refactor sendfromto (Y7n05h)

  References: pull request 11651

• Optionally send ‘verbose’ messages to a file, and log them at ‘DEBUG’ level otherwise

  References: pull request 11668

• Log when exiting due to a SIGTERM signal

  References: pull request 11669

• Add the protocol (Do53, DoT, DoH, …) of backends in the API

  References: pull request 11673

• Remove implicit type conversion (Y7n05h)

  References: #11619, pull request 11620

• Log when a console message exceeds the maximum size

  References: #11488, pull request 11543

• Include the address of the backend in ‘relayed to’ messages

  References: pull request 11578

• Better log message when no downstream server are available

  References: pull request 11573

• Raise the number of entries in a packet cache to at least 1

  References: #11383, pull request 11546

• Merge multiple parameters in newBPFFilter (Y7n05h)

  References: #11526, pull request 11535

• Reject BPFFilter::attachToAllBinds() at configuration time (Y7n05h)

  References: pull request 11523

• Add more build-time options to select features

  References: pull request 11515

• Multiplexer: Take the maximum number of events as a hint

  References: pull request 11517

• Add –log-timestamps flag

  References: pull request 11388

• Add a parameter to PoolAction to keep processing rules

  References: pull request 11174

• Fix build with OpenSSL 3.0.0

  References: pull request 11196

• Build with -fvisibility=hidden by default

  References: pull request 11178

• Add a lot more of build-time options to select features

  References: pull request 10950

Bug Fixes

• Apply the max number of concurrent conns per client to DoH

  References: #12019, pull request 12483

• Fix the health-check timeout computation for DoH backend

  References: pull request 12327

• Fix a crash on a invalid protocol in DoH forwarded-for header

  References: #11604, pull request 11621

• Better handling of multiple carbon servers

  References: #10517, #11216, pull request 12424

• Include <cstdint> in dnsdist-protocols.hh (Sander Hoentjen)

  References: pull request 12569

• Fix the formatting of ‘showServers’

  References: pull request 12535

• Properly record the incoming flags on a timeout

  References: #11905, pull request 12529

• Properly update rcode-related metrics on RCodeAction hits

  References: #11498, pull request 12484

• Handle out-of-memory exceptions in the UDP receiver thread

  References: pull request 12387

• Prevent an underflow of the TCP d_queued counter

  References: #12357, pull request 12365

• Properly handle single-SOA XFR responses

  References: #12099, pull request 12100

• Fix a bug in SetEDNSOptionAction

  References: #11728, pull request 11729

• Also reconnect on ENETUNREACH. (Asgeir Storesund Nilsen)

  References: #4155, pull request 11830

• Keep retained capabilities even when switching user/group

  References: pull request 11761

• Fix the number of concurrent queries on a backend TCP conn

  References: pull request 11718

• Fix invalid proxy protocol payload on a DoH TC to TCP retry

  References: pull request 11604

• Use the correct outgoing protocol in our ring buffers

  References: #11501, pull request 11545

Removals

• Remove the leak warning with GnuTLS >= 3.7.3

  References: #11201, pull request 11324

1.7.3

Released: 2nd of November 2022

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

dnsdist 1.7.3 contains no functional changes or bugfixes. This release strictly serves to bring dnsdist packages to our EL9 and Ubuntu Jammy repositories, and upgrades the dnsdist Docker image from Debian buster to Debian bullseye, as buster is officially EOL.

Improvements

• add el9/9stream targets

  References: pull request 11948

• docker images: upgrade to Debian bullseye

  References: pull request 11974

• dh_builddeb: force gzip compression (this makes the Ubuntu Jammy packages compatible with our Debian-hosted repositories)

  References: pull request 11742

1.7.2

Released: 14th of June 2022

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

Improvements

• Scan the UDP buckets only when we have outstanding queries

  References: #11576, pull request 11579

• Only allocate the health-check mplexer when needed

  References: #11422, pull request 11580

• Add Lua bindings to access the DNS payload as a string

  References: #11606, pull request 11666

Bug Fixes

• Fix invalid proxy protocol payload on a DoH TC to TCP retry

  References: #11604, pull request 11665

• Fix a crash on a invalid protocol in DoH forwarded-for header

  References: #11621, pull request 11667

• Add missing descriptions for prometheus metrics

  References: #11602, pull request 11664

1.7.1

Released: 25th of April 2022

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

Improvements

• Remove the leak warning with GnuTLS >= 3.7.3

  References: #11201, pull request 11324

• Fix compilation with OpenSSL 3.0.0

  References: pull request 11195

• Docker images: remove capability requirements

  References: #11081, pull request 11094

• Docker image: install ca-certificates

  References: #11290, pull request 11292

• Work around a compiler bug seen on OpenBSD/amd64 using clang-13

  References: #11113, pull request 11176

• Stop using the now deprecated and useless std::binary_function

  References: pull request 11197

• Add a ‘getAddressAndPort()’ method to DOHFrontend and TLSFrontend objects

  References: #11434, pull request 11547

Bug Fixes

• Fix the health-check timeout for outgoing DoH connections

  References: #11250, pull request 11253

• Set Server Name Indication on outgoing TLS connections (DoT, DoH)

  References: #11249, pull request 11251

• Fix the latency-count metric

  References: #11239, pull request 11323

• Fix a use-after-free in case of a network error in the middle of a XFR query

  References: #11330, pull request 11335

• Properly use eBPF when the DynBlock is not set

  References: #11504, pull request 11550

• Fix ‘inConfigCheck()’

  References: #11254, pull request 11255

• Use the correct outgoing protocol in our ring buffers

  References: #11501, pull request 11545

• Raise the number of entries in a packet cache to at least 1

  References: #11383, pull request 11546

• Fix wrong eBPF values (qtype, counter) being inserted for qnames

  References: pull request 11565

• The check interval applies to health-check, not timeouts

  References: #11375, pull request 11572

1.7.0

Released: 17th of January 2022

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

Bug Fixes

• Test the correct member in DynBlockRatioRule::warningRatioExceeded (Doug Freed)

  References: #11131, pull request 11156

1.7.0-rc1

Released: 22nd of December 2021

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

Improvements

• Reuse and save the TLS session tickets in DoT healthchecks

  References: pull request 11037

Bug Fixes

• Fix a double-free when a DoH cross-protocol response is dropped

  References: pull request 11075

• Check the size of the query when re-sending a DoH query

  References: pull request 11079

1.7.0-beta2

Released: 29th of November 2021

Improvements

• Add a function to know how many TLS sessions are currently cached

  References: pull request 10997

• Warn that GnuTLS 3.7.x leaks memory when validating certs

  References: pull request 11001

• Add a function to set the UDP recv/snd buffer sizes

  References: #10898, pull request 11008

• Add ‘showWebserverConfig’

  References: #10135, pull request 11006

Bug Fixes

• Fix a memory leak when reusing TLS tickets for outgoing connections

  References: pull request 10999

• Fix compiler/static analyzer warnings

  References: #10988, pull request 10993

• Fix Lua parameters bound checks

  References: pull request 11007

• Add missing visibility attribute on dnsdist_ffi_dnsquestion_get_qname_hash

  References: pull request 11031

1.7.0-beta1

Released: 16th of November 2021

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

New Features

• Implement filesystem pinning for eBPF maps, drop and truncate via XDP (Pierre Grié)

  References: pull request 10498, pull request 10883

• Add range support for dynamic blocks

  References: #4993, pull request 10815

• Add the ability to retain select capabilities at runtime

  References: pull request 10923

Improvements

• Support DoT, DoH and DNSCrypt transports for protobuf and dnstap

  References: #9103, pull request 10879

• Use the same outgoing TCP connection for different clients

  References: pull request 10862

• Read as many DoH responses as possible before yielding

  References: pull request 10875

• Stop over-allocating for DoH queries

  References: pull request 10876

• Convert make_pair to emplace (Rosen Penev)

  References: pull request 10646

• Add syslog identifier to service file

  References: #10651, pull request 10795

• Get rid of make_pair (Rosen Penev)

  References: pull request 10868

• Use make_unique instead of new (Rosen Penev)

  References: pull request 10870

• Handle existing EDNS content for SetMacAddrAction/SetEDNSOptionAction

  References: #4670, pull request 10907

Bug Fixes

• Keep watching idle DoH backend connections

  References: pull request 10845

• Fix the cleaning of TCP, DoT and DoH connections to the backend

  References: pull request 10920

• Properly handle I/O exceptions in the health checker

  References: pull request 10874

• NetmaskTree: Drop the ‘noexcept’ qualifier on the TreeNode ctor

  References: pull request 10900

• Fix build without nghttp2

  References: pull request 10922

• Remove debug print line flooding logs (Eugen Mayer)

  References: pull request 10935

• Credentials: EVP_PKEY_CTX_set1_scrypt_salt() takes an unsigned char*

  References: #10938, pull request 10943

1.7.0-alpha2

Released: 19th of October 2021

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

New Features

• Add lua support for SetEDNSOptionAction

  References: pull request 10814

• Rule for basing decisions on outstanding queries in a pool (phonedph1)

  References: pull request 10832

Improvements

• Disable TLS renegotiation, release buffers for outgoing TLS

  References: pull request 10823

• Don’t create SSLKEYLOGFILE files with wide permissions

  References: pull request 10760

• Update existing tags when calling setTagAction and setTagResponseAction

  References: pull request 10767

• Fix the unit tests to handle v4-only or v6-only connectivity

  References: #10403, pull request 10775

• Improve the coverage of the outgoing DoH code

  References: pull request 10782

• Allow skipping arbitrary EDNS options when computing packet hash

  References: pull request 10791

• Add incoming and outgoing protocols to grepq

  References: pull request 10833

• Allow setting the block reason from the SMT callback

  References: #10559, pull request 10835

• Clear the UDP states of TCP-only backends

  References: pull request 10844

• Replace shared by unique ptrs, reduce structs size

  References: pull request 10846

Bug Fixes

• Better handling of outgoing DoH workers

  References: #10771, pull request 10772

• Properly cache UDP queries passed to a TCP/DoT/DoH backend

  References: pull request 10787

• Use per-thread credentials for GnuTLS client connections

  References: pull request 10841

• Only set recursion protection once we know we do not return

  References: pull request 10848

1.7.0-alpha1

Released: 23rd of September 2021

Please review the Upgrade Guide before upgrading from versions < 1.7.x.

New Features

• Implementation of DoH between dnsdist and the backend

  References: pull request 10635

• Implement cross-protocol queries, including outgoing DNS over TLS

  References: pull request 10338

• Add support for Lua per-thread FFI rules and actions

  References: pull request 10501

• Add FFI functions to spoof multiple raw values

  References: #10456, pull request 10532

• Add support for range-based lookups into a Key-Value store

  References: #10520, pull request 10525

• Implement SpoofSVCAction to return SVC responses

  References: #10367, pull request 10597

Improvements

• Don’t look up the LMDB dbi by name for every query

  References: pull request 10520

• Move to hashed passwords for the web interface

  References: #7937, pull request 10157

• Fix ‘temporary used in loop’ warnings reported by g++ 11.1.0

  References: pull request 10429

• Skip some memory allocations in client mode to reduce memory usage

  References: pull request 10441

• Support multiple ip addresses for dnsdist-resolver lua script (Wim)

  References: pull request 10414

• Make DNSDist XFR aware when transfer is finished (Dimitrios Mavrommatis)

  References: #10436, pull request 10489

• Do not report latency metrics of down upstream servers (Holger Hoffstätte)

  References: #10500, pull request 10508

• Carry the exact incoming protocol (Do53, DNSCrypt, DoT, DoH) in DQ

  References: #10338, pull request 10537

• Implement ‘reload()’ to rotate Log(Response)Action’s log file

  References: #10502, pull request 10527

• Document that setECSOverride has its drawbacks (Andreas Jakum)

  References: pull request 10626

• Convert dnsdist and the recursor to LockGuarded

  References: pull request 10649

• Handle waiting for a descriptor to become readable OR writable

  References: pull request 10631

• Clean up a bit of “cast from type […] casts away qualifiers” warnings

  References: pull request 10687

• Reorganize the IDState and Rings fields to reduce memory usage

  References: pull request 10381

Bug Fixes

• Catch FDMultiplexerException in IOStateHandler’s destructor

  References: pull request 10656

• Resizing LMDB map size while there might be open transactions is unsafe

  References: pull request 10672

• Ignore TCAction over TCP

  References: #10693, pull request 10695

• Stop raising the number of TCP workers to the number of TCP binds

  References: pull request 10704

• Handle exception raised in IOStateGuard’s destructor

  References: pull request 10724

1.6.1

Released: 15th of September 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

New Features

• Add the missing DOHFronted::loadNewCertificatesAndKeys()

  References: #10418, pull request 10550

• Implement a web endpoint to get metrics for only one pool

  References: #10482, pull request 10560

Bug Fixes

• Set the dnstap/protobuf transport to TCP for DoH queries

  References: #10497, pull request 10538

• Backport a missing mutex header

  References: pull request 10438

• Properly handle ECS for queries with ancount or nscount > 0

  References: #10419, pull request 10619

• Catch FDMultiplexerException in IOStateHandler’s destructor

  References: pull request 10656

• Fix outstanding counter issue on TCP error

  References: #10705, pull request 10706

1.6.0

Released: 11th of May 2021

1.5.2

Released: 10th of May 2021

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Bug Fixes

• Fix a crash when a DoH responses map is updated at runtime

  References: #9934, pull request 9936

• Fix SNI on resumed sessions by acknowledging the name sent by the client

  References: #9921, pull request 9922

• Fix the DNSName move assignment operator

  References: pull request 9749

• Fix a typo in prometheus metrics dnsdist_frontend_tlshandshakefailures #9728 (AppliedPrivacy)

  References: #9728, pull request 9729

• Make: two fixes

  References: pull request 9583

• Fix eBPF filtering of long qnames

  References: #9689, pull request 9717

• Fix a hang when removing a server with more than one socket

  References: pull request 9900

• Fix Dynamic Block RCode rules messing up the queries count

  References: #9756, pull request 9980

• Fix EDNS in ServFail generated when no server is available

  References: #10006, pull request 10012

• Prevent a crash with DynBPF objects in client mode

  References: #10090, pull request 10095

• Add missing getEDNSOptions and getDO bindings for DNSResponse

  References: pull request 10355

1.6.0-rc2

Released: 4th of May 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

Improvements

• Make the backend queryLoad and dropRate values atomic

  References: pull request 10323

Bug Fixes

• Fix missing locks in DNSCrypt certificates management

  References: pull request 10346

• Only use eBPF for “drop” actions, clean up more often

  References: #10324, pull request 10327

1.6.0-rc1

Released: 20th of April 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

Improvements

• Replace pthread_rwlock with std::shared_mutex

  References: #10209, pull request 10216

• Also disable PMTU for v6

  References: pull request 10264

Bug Fixes

• Lua: don’t destroy keys during table iteration

  References: pull request 10171

• Add missing getEDNSOptions and getDO bindings for DNSResponse

  References: #10262, pull request 10267

• Fix some issues reported by Thread Sanitizer

  References: pull request 10274

1.6.0-alpha3

Released: 29th of March 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

Improvements

• Set OpenSSL to release buffers when idle, saves 35 kB per connection

  References: pull request 10179

• Unify certificate reloading syntaxes

  References: pull request 10214

• Disable TLS renegotiation by default

  References: pull request 10218

• Improve TCP connection reuse, add metrics

  References: pull request 10156

• Using DATA to report memory usage is unreliable, start using RES instead, as it seems reliable and relevant

  References: #7591, pull request 10161

• Add a metric for TCP listen queue full events

  References: pull request 10184

• Enable sharding by default, greater pipe buffer sizes

  References: pull request 10204

• Add limits for cached TCP connections, metrics

  References: pull request 10207

Bug Fixes

• Fix the handling of DoH queries with a non-zero ID

  References: pull request 10208

• Fix the TCP connect timeout, add metrics

  References: pull request 10201

1.6.0-alpha2

Released: 4th of March 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

New Features

• Add option to spoofRawAction to spoof multiple answers (Sander Hoentjen)

  References: pull request 10063

• Add ‘spoof’ and ‘spoofRaw’ Lua bindings

  References: pull request 10073

Improvements

• Make NetmaskTree::fork() a bit easier to understand

  References: #10035, pull request 10046

• Do not update the TCP error counters on idle states

  References: pull request 10131

• Bind __tostring instead of toString for Lua, so that conversion to string works automatically (Aki Tuomi)

  References: pull request 9361

Bug Fixes

• Remove forgotten debug line in the web server

  References: #10049, pull request 10050

• Create TCP worker threads before acceptors ones

  References: pull request 10088

• Prevent a crash with DynBPF objects in client mode

  References: #10090, pull request 10095

• Fix several bugs in the TCP code path, add unit tests

  References: pull request 10108

• Fix size check during trailing data addition, regression tests

  References: pull request 10139

• Clean up expired entries from all the packet cache’s shards

  References: pull request 10133

1.6.0-alpha1

Released: 2nd of February 2021

Please review the Upgrade Guide before upgrading from versions < 1.6.x.

New Features

• Add per-thread Lua FFI load-balancing policies

  References: pull request 9175

• Implement Lua custom web endpoints

  References: #9120, pull request 9676

• Implement TCP out-of-order

  References: pull request 9582

• Add support for incoming Proxy Protocol

  References: pull request 9616

• Add SkipCacheResponseAction

  References: #9536, pull request 9960

Improvements

• Use more of systemd’s sandboxing options when available

  References: pull request 8969

• Add per connection queries count and duration stats for DoH

  References: pull request 9738

• Add an option to allow sub-paths for DoH

  References: pull request 9962

• Prioritize ChaCha20-Poly1305 when client does (Sukhbir Singh)

  References: pull request 9510

• Start all TCP worker threads on startup

  References: pull request 9957

• Speed up the round robin policy

  References: pull request 9382

• Avoid unnecessary allocations and copies with DNSName::toDNSString()

  References: pull request 9424

• Get rid of allocations in the packet cache’s fast path

  References: #8993, pull request 9420

• Fix the DNSName move assignment operator

  References: pull request 9749

• Don’t copy the policy for every query

  References: pull request 9850

• UUID: Use the non-cryptographic variant of the boost::uuid

  References: pull request 9832

• Use an eBPF filter for Dynamic blocks when available

  References: #6763, #9756, pull request 9782

• Use protozero for Protocol Buffer operations

  References: #9780, #9781, pull request 9843

• Limit the number of concurrent console and web connections

  References: #4978, pull request 9997

• Add prometheus metrics for top Dynamic Blocks entries

  References: pull request 9756

• Add Lua bindings to get a server’s latency

  References: pull request 9273

• Wrap more FILE objects in smart pointers

  References: pull request 9225

• Set the default EDNS buffer size on generated answers to 1232

  References: pull request 9049

• Add support for FreeBSD’s SO_REUSEPORT_LB

  References: #9156, pull request 9157

• Accept string in DNSDistPacketCache:expungeByName

  References: pull request 9428

• DNSName: add toDNSString convenience function

  References: pull request 9466

• Skip EDNS Cookies in the packet cache

  References: #5131, pull request 8993

• Add the query payload size to the verbose log over TCP

  References: pull request 9677

• Add the response code in the packet cache dump

  References: #9274, pull request 9737

• Add an optional name to rules

  References: pull request 9746

• Add the ability to set ACL from a file (Matti Hiljanen)

  References: pull request 9822

• Add a Lua binding for the number of queries dropped by a server

  References: #9861, pull request 9862

• Move to c++17

  References: pull request 9913

• Fix warnings on autoconf 2.70

  References: #9918, pull request 9920

• Reduce diff to upstream yahttp, fixing a few CodeQL reports

  References: pull request 9955

• Handle syslog facility as string, document the numerical one

  References: #9383, pull request 9989

• Deprecate parameters to webserver(), add ‘statsRequireAuthentication’ parameter

  References: #8710, #9311, pull request 9972

• Add a counter for queries truncated because of a rule

  References: #9357, pull request 9992

• Replace offensive terms in our code and documentation

  References: pull request 9993

• Use aligned atomics to prevent false sharing

  References: #9455, pull request 9998

• Unify non-terminal actions as SetXXXAction()

  References: #8118, pull request 9974

• Accept a NMG to fill DynBlockRulesGroup ranges

  References: #9545, pull request 10015

• Silence clang 12 warning

  References: pull request 10023

• Fix a few warnings reported by clang’s static analyzer and cppcheck

  References: pull request 10035

Bug Fixes

• Fix a crash when a DoH responses map is updated at runtime

  References: #9927, pull request 9934

• Fix SNI on resumed sessions by acknowledging the name sent by the client

  References: pull request 9921

• Use toStringWithPort instead of manual addr/port concat (Mischan Toosarani-Hausberger)

  References: #9075, pull request 9222

• Force a reconnection when a downstream transitions to the UP state (Nuitari, Stephane Bakhos)

  References: pull request 9275

• Handle EINTR in DelayPipe

  References: pull request 9381

• Handle empty DNSNames in grepq()

  References: pull request 9431

• Make: two fixes

  References: pull request 9583

• Fix eBPF filtering of long qnames

  References: #9626, pull request 9689

• Improve const-correctness of Lua bindings (Georgeto)

  References: pull request 9721

• Fix a hang when removing a server with more than one socket

  References: pull request 9900

• Appease clang++ 12 ASAN on MacOS

  References: pull request 9925

• Bunch of signed vs unsigned warnings

  References: pull request 9937

• Send a NotImp answer on empty (qdcount=0) queries

  References: #9961, pull request 9991

• Don’t apply QPS to backend server on cache hits

  References: #7038, pull request 9999

• Fix EDNS in ServFail generated when no server is available

  References: #10006, pull request 10012

Removals

• Rename topRule() and friends

  References: pull request 9532

• Remove useless second argument for SpoofAction

  References: #9783, pull request 9784

1.5.1

Released: 1st of October 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Improvements

• Add the ‘clearConsoleHistory’ command

  References: #9372, pull request 9540

Bug Fixes

• Stop the related responder thread when a backend is removed

  References: #9372, pull request 9541

• Fix getEDNSOptions() for {AN,NS}COUNT != 0 and ARCOUNT = 0

  References: pull request 9542

• Fix building with LLVM11 (@RvdE)

  References: pull request 9543

• Only add EDNS on negative answers if the query had EDNS

  References: pull request 9555

1.5.0

Released: 30th of July 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Improvements

• Use explicit flag for the specific version of c++ we are targeting.

  References: pull request 9231

• Prevent a copy of a pool’s backends when selecting a server.

  References: pull request 9360

Bug Fixes

• Fix compilation with h2o_socket_get_ssl_server_name().

  References: pull request 9344

• Prevent a possible overflow via large Proxy Protocol values. (Valentei Sergey)

  References: pull request 9320

• Avoid name clashes on Solaris derived systems.

  References: #9279, pull request 9348

• Resize hostname to final size in getCarbonHostname(). (Aki Tuomi)

  References: pull request 9343

• Fix compilation on OpenBSD/amd64.

  References: pull request 9346

• Handle calling PacketCache methods on a nil object.

  References: pull request 9356

1.5.0-rc4

Released: 7th of July 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Bug Fixes

• Prevent a race between the DoH handling threads

  References: pull request 9278

1.5.0-rc3

Released: 18th of June 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

New Features

• Implement an ACL in the internal web server

  References: pull request 9229

Improvements

• Less negatives in secpoll error messages improves readability.

  References: pull request 9100

• Use std::string_view when available (Rosen Penev)

  References: pull request 9207

• Clean up dnsdistconf.lua as a default configuration file

  References: #8038, pull request 9238

• Add optional masks to KeyValueLookupKeySourceIP

  References: pull request 9244

Bug Fixes

• Use non-blocking pipes to pass DoH queries/responses around

  References: #9206, pull request 9211

• Fix compilation on systems that do not define HOST_NAME_MAX

  References: #9125, pull request 9127

• Do not use using namespace std;

  References: pull request 9213

1.5.0-rc2

Released: 13th of May 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Improvements

• Add the unit to the help for latency buckets

  References: pull request 9084

• Avoid copies in for loops

  References: pull request 9042

• Build with -Wmissing-declarations -Wredundant-decls

  References: pull request 9054

• Use std::shuffle instead of std::random_shuffle

  References: #9004, pull request 9016

• Get rid of a naked pointer in the /dev/poll event multiplexer

  References: pull request 9053

• A few warnings fixed, reported by clang on OpenBSD

  References: pull request 9059

• Wrap pthread objects

  References: pull request 9067

• NetmaskTree: do not test node for null, the loop guarantees node is not null.

  References: pull request 9078

Bug Fixes

• Fix duplicated HTTP/1 counter in ‘showDOHFrontends()’

  References: pull request 9068

• Fix compilation of the ports event multiplexer

  References: #9025, pull request 9031

• Gracefully handle a failure to remove FD on (re)-connection

  References: pull request 9057

1.5.0-rc1

Released: 16th of April 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

Improvements

• Expose SuffixMatchNode::remove in Lua

  References: pull request 8956

• Remove a std::move() preventing Return-Value Optimization in lmdb-safe.cc

  References: pull request 8962

• Drop responses with the QR bit set to 0

  References: pull request 8996

• Add an option to control the size of the TCP listen queue

  References: #8986, pull request 8994

Bug Fixes

• Keep accepting fragmented UDP datagrams on DNSCrypt binds

  References: pull request 8974

• Accept UDP datagrams larger than 1500 bytes for DNSCrypt

  References: #8974, pull request 8976

• On OpenBSD string_view is both in boost and std

  References: pull request 8955

1.5.0-alpha1

Released: 20th of March 2020

Please review the Upgrade Guide before upgrading from versions < 1.5.x.

New Features

• Implement LuaFFIRule, LuaFFIAction and LuaFFIResponseAction

  References: #7617, pull request 8505

• Add SetNegativeAndSOAAction() and its Lua binding

  References: #4747, pull request 8171

• Implement dynamic blocking on ratio of rcode/total responses

  References: pull request 8274

• Add bounded loads to the consistent hashing policy

  References: #7387, pull request 8567

• LogResponseAction (phonedph1)

  References: pull request 8654

• Add spoofRawAction() to craft answers from raw bytes

  References: pull request 8722

• Add support for Proxy Protocol between dnsdist and the recursor

  References: pull request 8874

• Implement bounded loads for the whashed and wrandom policies

  References: pull request 8909

Improvements

• Don’t accept sub-paths of configured DoH URLs

  References: #8573, pull request 8760

• Implement Cache-Control headers in DoH

  References: #8586, pull request 8762

• Change the default DoH path from / to /dns-query

  References: #8819, pull request 8905

• Add support for the processing of X-Forwarded-For headers

  References: #8661, pull request 8945

• Switch the default DoT provider from GnuTLS to OpenSSL

  References: pull request 8380

• Document that the ‘keyLogFile’ option requires OpenSSL >= 1.1.1

  References: #8806, pull request 8899

• Add the source and destination ports to the protobuf msg

  References: pull request 8702

• Better handling of reconnections in Remote Logger

  References: pull request 8887

• Rework NetmaskTree for better CPU and memory efficiency. (Stephan Bosch)

  References: pull request 8355

• Implement parallel health checks

  References: pull request 8491

• Use move semantics when updating the content of the StateHolder

  References: pull request 8538

• Keep a masked network in the Netmask class

  References: pull request 8812

• Make FrameStream IO parameters configurable

  References: pull request 8937

• Add backend status to prometheus metrics

  References: #8746, pull request 8772

• Add ‘IO wait’ and ‘steal’ metrics on Linux

  References: pull request 8783

• Don’t start as root within a systemd environment

  References: pull request 7820

• Separate the check-config and client modes

  References: pull request 8456

• Add the number of received bytes to StatNode entries

  References: pull request 8529

• Support setting the value of AA, AD and RA when self-generating answers

  References: #8534, pull request 8556

• pthread_rwlock_init() should be matched by pthread_rwlock_destroy()

  References: pull request 8580

• Replace include guard ifdef/define with pragma once (Chris Hofstaedtler)

  References: pull request 8631

• Allow retrieving and deleting a backend via its UUID

  References: pull request 8657

• Load an openssl configuration file, if any, during startup

  References: pull request 8733

• Add get*BindCount() functions

  References: pull request 8848

• Add sessionTimeout setting for TLS session lifetime (Matti Hiljanen)

  References: pull request 8882

• Detect {Libre,Open}SSL functions availability during configure

  References: #8739, pull request 8900

• Warn on startup about low weight values with chashed

  References: #8669, pull request 8950

Bug Fixes

• Set the DoH ticket rotation delay before loading tickets

  References: pull request 8949

• Display the correct DoT provider

  References: pull request 8662

• Use ref counting for the DoT TLS context

  References: pull request 8761

• Add ‘queue full’ metrics for our remote logger, log at debug only

  References: #8629, pull request 8883

• Fix ECS addition when the OPT record is not the last one

  References: #8098, pull request 8115

• Wait longer for the TLS ticket to arrive in our tests

  References: pull request 8591

• Add missing exception message in KVS error

  References: pull request 8604

• Add getTag()/setTag() Lua bindings for a DNSResponse

  References: pull request 8782

• Fix key logging for DNS over TLS

  References: #8442, pull request 8787

• Fix a typo in the help/completion for getDNSCryptBindCount

  References: pull request 8855

• Implement rmACL() (swoga)

  References: pull request 8856

• Remove unused lambda capture reported by clang++

  References: pull request 8879

1.4.0

Released: 20th of November 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

Improvements

• Fix the default value of setMaxUDPOutstanding in the console’s help (phonedph1)

  References: pull request 8531

• Add bindings for the noerrors and drops members of StatNode

  References: pull request 8522

• Fix -Wshadow warnings (Aki Tuomi)

  References: pull request 8440

• Fix typo: settting to setting (Chris Hofstaedtler)

  References: pull request 8509

Bug Fixes

• Lowercase the name blocked by a SMT dynamic block

  References: pull request 8524

misc

• Prefer the cipher suite from the server by default (DoH, DoT)

  References: pull request 8526

1.4.0-rc5

Released: 30th of October 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

Improvements

• Rename the ‘address’ label to ‘frontend’ for DoH metrics

  References: pull request 8465

Bug Fixes

• Increment the DOHUnit ref count when it’s set in the IDState

  References: pull request 8471

1.4.0-rc4

Released: 25th of October 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Add support dumping TLS keys via keyLogFile

  References: pull request 8442

Improvements

• Implement reference counting for the DOHUnit object

  References: pull request 8416

• Count the number of concurrent connections for DoH as well

  References: pull request 8395

• Lowercase custom DoH header names

  References: #8353, pull request 8365

• Refactor DoH prometheus metrics again

  References: pull request 8361

• Add metrics about TLS handshake failures for DoH and DoT

  References: pull request 8447

• Merge the setup of TLS contexts in DoH and DoT

  References: pull request 8383

• Add metrics about unknown/inactive TLS ticket keys

  References: pull request 8406

• Add metrics about TLS versions with DNS over TLS

  References: pull request 8387

• Add a ‘preferServerCiphers’ option for DoH and DoT

  References: pull request 8382

• Add more options to LogAction (non-verbose mode, timestamps)

  References: #8390, pull request 8411

• Fix formatting in showTCPStats()

  References: pull request 8415

• Use SO_BINDTODEVICE when available for newServer’s source interface

  References: pull request 8372

• Check the address supplied to ‘webserver’ in check-config

  References: #8362, pull request 8364

Bug Fixes

• Clear the DoH session ticket encryption key in the ctor

  References: pull request 8388

• Add missing prometheus descriptions for cache-related metrics

  References: pull request 8409

• Add a prometheus ‘thread’ label to distinguish identical frontends

  References: pull request 8381

• Fix a typo in the prometheus description of ‘senderrors’

  References: pull request 8378

• More prometheus fixes

  References: pull request 8368

• Fix the caching of large entries

  References: pull request 8408

• Work around cmsg_space somehow not being a constexpr on macOS

  References: #8412, pull request 8413

• Fix the creation order of rules when inserted via setRules()

  References: pull request 8359

1.4.0-rc3

Released: 30th of September 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

Improvements

• Allow accepting DoH queries over HTTP instead of HTTPS

  References: pull request 8267

• Implement TLS session ticket keys management for DoH

  References: pull request 8349

• Display the DoH and DoT binds in the web view

  References: pull request 8264

• Clean up our interactions with errno

  References: #7845, pull request 8083

• Remove the ‘blockfilter’ stat from the web view

  References: #5514, pull request 8265

• Fix some spelling mistakes noticed by lintian (Chris Hofstaedtler)

  References: pull request 8268

• dnsdistconf.lua use non-deprecated versions for 1.4.0 (phonedph1)

  References: pull request 8285

• Better use of labels in our DoH prometheus export

  References: pull request 8318

Bug Fixes

• Fix the newCDBKVStore console completion when LMDB is not enabled (phonedph1)

  References: pull request 8281

• Allow configure CDB_CFLAGS to work (phonedph1)

  References: pull request 8283

• Fix the warning message on an invalid secpoll answer

  References: pull request 8303

• Don’t connect to remote logger in client/command mode

  References: #8300, pull request 8304

1.4.0-rc2

Released: 2nd of September 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Add support for early DoH HTTP responses

  References: pull request 8206

• Add a KeyValueStoreLookup action based on CDB or LMDB

  References: pull request 8139

Improvements

• Add minTLSVersion for DoH and DoT

  References: #8202, pull request 8207

• Split dnsdist-lua-bindings.cc to reduce memory consumption during compilation

  References: pull request 8250

• Add a Lua binding for dynBlockRulesGroup:setQuiet(quiet)

  References: pull request 8252

misc

• Update h2o to 2.2.6, fixing CVE-2019-9512, CVE-2019-9514 and CVE-2019-9515 for repo.powerdns.com packages

  References: pull request 8200

1.4.0-rc1

Released: 12th of August 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Add support for custom DoH headers (Melissa Voegeli)

  References: #7900, #7957, pull request 8148

• Add lua bindings, rules and action for DoH

  References: #8133, pull request 8153

• Add OCSP stapling (from files) for DoT and DoH

  References: #7812, pull request 8141

• Implement ContinueAction()

  References: pull request 8117

Improvements

• Send better HTTP status codes, handle ACL drops earlier

  References: pull request 7917

• Add more stats about DoH HTTP responses

  References: #7898, pull request 7933

• Improve error messages for DoT issues

  References: pull request 7978

• Accept more than one certificate in addDNSCryptBind()

  References: #8020, pull request 8042

• Disallow TCP disablement

  References: pull request 7860

• Update boost.m4 to the latest version

  References: pull request 7862

• Print stats from expungeByName (Matti Hiljanen)

  References: pull request 7909

• Squelch unused function warning

  References: #7950, pull request 7952

• SuffixMatchNode:add(): accept more types

  References: pull request 7985

• Explicitly align the buffer used for cmsgs

  References: #7981, pull request 7990

• Add quiet parameter to NetmaskGroupRule

  References: pull request 7992

• Clear cmsg_space(sizeof(data)) in cmsghdr to appease Valgrind

  References: #7981, pull request 7996

• Add static assertions for the size of the src address control buffer

  References: pull request 8007

• Don’t create temporary strings to escape DNSName labels

  References: pull request 8013

• Display TCP/DoT queries and responses in verbose mode, opcode in grepq

  References: pull request 8024

• Be a bit more explicit about what failed in testCrypto()

  References: pull request 8025

• Update URLs to use HTTPS scheme (Chris Hofstaedtler)

  References: pull request 8110

• Double-check we only increment the outstanding counter once

  References: pull request 8113

• ext/ipcrypt: ship license in tarballs (Chris Hofstaedtler)

  References: #8108, pull request 8135

• Use a counter to mark IDState usage instead of the FD

  References: pull request 8154

• Increase the default value of setMaxUDPOutstanding to 65535

  References: pull request 8175

Bug Fixes

• Properly override the HTTP Server header for DoH

  References: #7894, pull request 7911

• Proper HTTP response for timeouts over DoH

  References: #7917, pull request 7927

• Prevent a dangling DOHUnit pointer when send() failed

  References: pull request 8112

• Exit when requested DoT/DoH support is not compiled in

  References: pull request 7915

• Skip non-dnscrypt binds in showDNSCryptBinds()

  References: #8014, pull request 8015

• SuffixMatchTree: fix root removal, partial match of non-leaf nodes

  References: pull request 7886

• Deduplicate frontends entries with carbon and prometheus

  References: #7933, pull request 7934

• Update boost.m4

  References: #6942, #8084, pull request 7951

• Fix short IOs over TCP

  References: #7971, pull request 7974

• Fix handling of backend connection failing over TCP

  References: pull request 7979

• Insert the response into the ringbuffer right after sending it

  References: pull request 8003

• Handle ENOTCONN on read() over TCP

  References: #8021, pull request 8030

• Make sure we always compile with BOOST_CB_ENABLE_DEBUG set to 0

  References: pull request 8067

• Catch exceptions thrown when handling a TCP response

  References: pull request 8078

• Fix unlimited retries when TCP Fast Open is enabled

  References: pull request 8079

• M4/systemd.m4: fail when systemctl is not available

  References: pull request 8081

• Fix a typo in the Server’s latency description for Prometheus (phonedph1)

  References: pull request 8105

• Console: flush cout after printing g_outputbuffer (Doug Freed)

  References: #8130, pull request 8131

• Fix signedness issue in isEDNSOptionInOpt()

  References: pull request 8158

1.4.0-beta1

Released: 6th of June 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Implement SNIRule for DoT and DoH

  References: #7210, pull request 7825

Improvements

• Support Prometheus latency histograms (Marlin Cremers)

  References: #6088, pull request 7853

Bug Fixes

• DoH: Don’t let ‘self’ dangling while parsing the request’s qname, this could lead to a crash

  References: #7810, pull request 7814

• Fix minor issues reported by Coverity

  References: pull request 7823

• Remove second, incomplete copy of lua EDNSOptionCode table

  References: pull request 7833

1.4.0-alpha2

Released: 26th of April 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Add DNS over HTTPS support based on libh2o

  References: #6911, #7526, pull request 7726

Improvements

• Ignore Path MTU discovery on UDP server socket

  References: pull request 7410

• Alternative solution to the unaligned accesses.

  References: pull request 7708

Bug Fixes

• Exit when setting ciphers fails (GnuTLS)

  References: pull request 7718

1.4.0-alpha1

Released: 12th of April 2019

Please review the Upgrade Guide before upgrading from versions < 1.4.x.

New Features

• Make recursor & dnsdist communicate (ECS) ‘variable’ status

  References: pull request 7209

• Add namespace and instance variable to carbon key (Gibheer)

  References: #2362, #6941, pull request 6959

• Allow NoRecurse for use in dynamic blocks or Lua rules (phonedph1)

  References: pull request 7087

• Expose secpoll status

  References: #7194, pull request 7197

• Add an optional ‘checkTimeout’ parameter to ‘newServer()’

  References: #7236, pull request 7323

• Add a ‘rise’ parameter to ‘newServer()’

  References: #7237, pull request 7322

• Add a ‘keepStaleData’ option to the packet cache

  References: #7239, pull request 7310

• Expose trailing data (Richard Gibson)

  References: #6846, #6897, pull request 6967

• Add option to set interval between health checks (1848)

  References: pull request 7142

• Add EDNS unknown version handling (Dmitry Alenichev)

  References: pull request 7406

• DNSNameSet and QNameSetRule (Andrey)

  References: pull request 7537

• Add support for encrypting ip addresses #gdpr

  References: #6242, pull request 7481

• Add ‘setSyslogFacility()’

  References: #5653, pull request 7677

• Add ‘reloadAllCertificates()’

  References: pull request 7676

Improvements

• Fix warnings, mostly unused parameters, reported by -wextra

  References: pull request 7168

• Add optional uuid column to showServers()

  References: pull request 7191

• Configure –enable-pdns-option –with-third-party-module (Josh Soref)

  References: pull request 7026

• Drop remaining capabilities after startup

  References: pull request 7138

• More sandboxing using systemd’s features

  References: pull request 6634

• Reduce systemcall usage in Protobuf logging

  References: pull request 7428

• Resync YaHTTP code to cmouse/yahttp@11be77a1fc4032 (Chris Hofstaedtler)

  References: pull request 7433

• Pass empty response (Dmitry Alenichev)

  References: pull request 7431

• Change the way getRealMemusage() works on linux (using statm)

  References: pull request 7502

• Prevent 0-ttl cache hits

  References: #7534, pull request 7585

• Add addDynBlockSMT() support to dynBlockRulesGroup

  References: #7139, pull request 7343

• Add frontend response statistics (Matti Hiljanen)

  References: pull request 7578

• Remove addLuaAction and addLuaResponseAction

  References: pull request 7670

• Refactoring of the TCP stack

  References: #4814, #7526, pull request 7559

• Prevent a conflict with BADSIG being clobbered

  References: #7556, pull request 7692

• Switch to the new ‘newPacketCache()’ syntax for 1.4.0

  References: pull request 7689

• Move constants to proper namespace

  References: pull request 7678

• Unify the management of DNS/DNSCrypt/DoT frontends

  References: pull request 7694

• Fix compiler warning about returning garbage (Adam Majer)

  References: pull request 7167

Bug Fixes

• Protect GnuTLS tickets key rotation with a read-write lock

  References: pull request 7256

• Check that SO_ATTACH_BPF is defined before enabling eBPF

  References: pull request 7267

• Fix off-by-one in mvRule counting

  References: pull request 7426

• Don’t convert nsec to usec if we need nsec

  References: pull request 7520

• Fix setRules()

  References: pull request 7594

• Handle EAGAIN in the GnuTLS DNS over TLS provider

  References: pull request 7560

• Gracefully handle a null latency in the webserver’s js

  References: #7461, pull request 7586

• EDNSOptionView improvements

  References: pull request 7652

• Honor libcrypto include path

  References: #7481, pull request 7674

1.3.3

Released: 8th of November 2018

Please review the Upgrade Guide before upgrading from versions < 1.3.x.

New Features

• Add consistent hash builtin policy

  References: #6932, pull request 6737, pull request 6939

• Add EDNSOptionRule

  References: pull request 6803

• Add DSTPortRule (phonedph1)

  References: pull request 6813

• Make getOutstanding usable from both lua and console (phonedph1)

  References: pull request 6826

• Added :excludeRange and :includeRange methods to DynBPFFilter class (Reinier Schoof)

  References: pull request 6856

• Add Prometheus stats support (Pavel Odintsov, Kai S)

  References: #4947, #6002, pull request 3935, pull request 6343, pull request 6901, pull request 7007, pull request 7089

• Name threads in the programs

  References: #6974, pull request 6997

• Support the NXDomain action with dynamic blocks

  References: #6908, pull request 7075

• Add security polling

  References: pull request 7115

• Add a PoolAvailableRule to easily add backup pools (Robin Geuze)

  References: pull request 7140

Improvements

• Get rid of some allocs/copies in DNS parsing

  References: pull request 6831

• Set a correct EDNS OPT RR for self-generated answers

  References: #4857, #6348, pull request 6847

• Fix a sign-comparison warning in isEDNSOptionInOPT()

  References: pull request 6877

• Add warning rates to DynBlockRulesGroup rules

  References: #6907, pull request 6986

• Add support for exporting a server id in protobuf

  References: #6990, #7004, pull request 7015

• dnsdist did not set TCP_NODELAY, causing needless latency

  References: pull request 7030

• Add a setting to control the number of stored sessions

  References: pull request 7062

• Wrap GnuTLS and OpenSSL pointers in smart pointers

  References: #7060, pull request 7064

• Add a ‘creationOrder’ field to rules

  References: #6909, pull request 7078

• Fix return-type detection with boost 1.69’s tribool

  References: #7091, pull request 7092

• Fix format string issue on 32bits ARM

  References: #7096, pull request 7104

• Wrap TCP connection objects in smart pointers

  References: pull request 7108

• Add the setConsoleOutputMaxMsgSize function

  References: #7084, pull request 7109

• Add the ability to update webserver credentials

  References: #7112, pull request 7117

Bug Fixes

• Display dynblocks’ default action, None, as the global one

  References: pull request 6835

• Fix compilation when SO_REUSEPORT is not defined

  References: pull request 6956

• Release memory on DNS over TLS handshake failure

  References: pull request 7060

• Handle trailing data correctly when adding OPT or ECS info

  References: #6896, pull request 7165

1.3.2

Released: 10th of July 2018

Please review the Upgrade Guide before upgrading from versions < 1.3.x.

Bug Fixes

• Add missing include for PRId64, fix build on CentOS 6 / SLES 12

  References: pull request 6785

1.3.1

Released: 10th of July 2018

Please review the Upgrade Guide before upgrading from versions < 1.3.x.

New Features

• Add support for more than one TLS certificate

  References: #6450, pull request 6524

• Add a negative ttl option to the packet cache

  References: #6579, pull request 6740

• Add the ability to dump a summary of the cache content

  References: pull request 6749

• Add netmask-based {ex,in}clusions to DynblockRulesGroup

  References: pull request 6760

• Add DNSAction.NoOp to debug dynamic blocks

  References: #6703, pull request 6776

• Add SetECSAction to set an arbitrary outgoing ecs value

  References: #6404, pull request 6734

• Add support for rotating certificates and keys

  References: pull request 6764

Improvements

• Remove thelog and thel and replace this with a global g_log

  References: #6357, pull request 6358

• Fix two small nits on the documentation

  References: pull request 6422

• Move the el6 dnsdist package to upstart

  References: #6394, pull request 6426

• CLI option improvements (Chris Hofstaedtler)

  References: #6433, pull request 6435

• Split pdns_enable_unit_tests (Chris Hofstaedtler)

  References: pull request 6436

• Re-do lua detection

  References: #6423, pull request 6445, pull request 6457, pull request 6470

• Docs: fix missing ref in the dnsdist docs

  References: pull request 6460

• Be more permissive in wrandom tests, log values on failure

  References: pull request 6502

• Tests: avoid failure on not-so-optimal distribution

  References: #6430, pull request 6523

• Add syntax to dns.proto to silence compilation warning.

  References: pull request 6577

• Fix warnings reported by gcc 8.1.0

  References: pull request 6590

• Document setVerboseHealthchecks()

  References: #6483, pull request 6592

• Update dq.rst (phonedph1)

  References: pull request 6615

• Fix rpm scriptlets

  References: pull request 6641

• Don’t copy unitialized values of SuffixMatchTree

  References: pull request 6637

• Expose toString of various objects to Lua (Chris Hofstaedtler)

  References: pull request 6684

• Remove ‘expired’ states from MaxQPSIPRule

  References: pull request 6674

• Mark the remote member of DownstreamState as const

  References: #6664, pull request 6688

• Test the content of dynamic blocks using the API

  References: #6706, pull request 6710

• Default set “connection: close” header for web requests

  References: #6532, pull request 6711

• Update timedipsetrule.rst (phonedph1)

  References: pull request 6717

• Don’t access the TCP buffer vector past its size

  References: #6712, pull request 6716

• Show droprate in API output

  References: pull request 6563

• Refuse console connection without a proper key set

  References: #6683, #6709, pull request 6715

• Use LRU to clean the MaxQPSIPRule’s store

  References: pull request 6726

• Disable maybe uninitialized warnings with boost optional

  References: pull request 6769

• Luawrapper: report caught std::exception as lua_error

  References: #6541, pull request 6658

• Dnstap.rst: fix some editing errors (Chris Hofstaedtler)

  References: pull request 6602

• Allow known exception types to be converted to string

  References: #6535, pull request 6541

Bug Fixes

• Initialize the done variable in the rings’ unit tests

  References: pull request 6425

• Reorder headers to fix OpenBSD build

  References: pull request 6429

• Restrict value range for weight parameter, avoid sum overflows dropping queries (Dan McCombs)

  References: pull request 6448

• Fix reconnection handling

  References: pull request 6672

• Dynamic blocks were being created with the wrong duration (David Freedman)

  References: pull request 6706

• Limit qps and latency to two decimals in the web view

  References: #6442, pull request 6718

• Check the flags to detect collisions in the packet cache

  References: pull request 6747

• Fix iterating over the results of exceed*() functions

  References: pull request 6762

• Fix duration false positive in the dynblock regression tests

  References: pull request 6767

• Implement NoneAction()

  References: #6758, pull request 6775

• Detect ECS collisions in the packet cache

  References: #6747, pull request 6754

• Fix an outstanding counter race when reusing states

  References: pull request 6773

1.3.0

Released: 30th of March 2018

Please review the Upgrade Guide before upgrading from versions < 1.3.x.

New Features

• Add an optional status parameter to Server:setAuto().

  References: pull request 5625

• Add inClientStartup() function.

  References: pull request 6072

• Add tag-based routing of queries.

  References: pull request 6037

• Add experimental DNS-over-TLS support.

  References: pull request 6117, pull request 6175, pull request 6176, pull request 6177, pull request 6189

• Add simple dnstap support (Justin Valentini, Chris Hofstaedtler).

  References: pull request 5201, pull request 6170

• Add experimental XPF support based on draft-bellis-dnsop-xpf-04.

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

• Add ERCodeRule() to match on extended RCodes (Chris Hofstaedtler).

  References: pull request 6147

• Add TempFailureCacheTTLAction() (Chris Hofstaedtler).

  References: pull request 6003

• Add DynBlockRulesGroup to improve processing speed of the maintenance() function by reducing memory usage and not walking the ringbuffers multiple times.

  References: pull request 6391

• Add console ACL functions.

  References: #4654, pull request 6399

• Allow adding EDNS Client Subnet information to a query before looking in the cache. This allows serving ECS enabled answers from the cache when all servers in a pool are down.

  References: #6098, pull request 6400

Improvements

• Add cache sharding, recvmmsg and CPU pinning support. With these, the scalability of dnsdist is drastically improved.

  References: #5202, #5859, pull request 5576, pull request 5860

• Add burst option to MaxQPSIPRule() (42wim).

  References: pull request 5970

• Add Pools, cacheHitResponseRules to the API.

  References: pull request 6022

• Add a class option to health checks.

  References: #5748, pull request 5929

• Add UUIDs to rules, this allows tracking rules through modifications and moving them around.

  References: pull request 6030

• Apply ResponseRules to locally generated answers (Chris Hofstaedtler).

  References: #6182, pull request 6185

• Report LuaAction() and LuaResponseAction() failures in the log and send SERVFAIL instead of not answering the query (Chris Hofstaedtler).

  References: pull request 6283

• Unify global statistics accounting (Chris Hofstaedtler).

  References: pull request 6289

• Speed up the processing of large ring buffers. This change will make dnsdist more scalable with a large number of different clients.

  References: pull request 6350, pull request 6366

• Make custom addLuaAction() and addLuaResponseAction() callback’s second return value optional.

  References: #6346, pull request 6363

• Add “server-up” metric count to Carbon Reporting (Lowell Mower).

  References: pull request 6327

• Add xchacha20 support for DNSCrypt.

  References: pull request 6045, pull request 6382

• Scalability improvement: Add an option to use several source ports towards a backend.

  References: pull request 6317

• Add ‘?’ and ‘help’ for providing help() output on dnsdist -c (Kirill Ponomarev, Chris Hofstaedtler).

  References: #4845, pull request 5866, pull request 6375

• Replace the Lua mutex with a rw lock to limit contention. This improves the processing speed and parallelism of the policies.

  References: pull request 6190, pull request 6381

• Ensure dnsdist compiles on NetBSD (Tom Ivar Helbekkmo).

  References: pull request 6146

• Also log eBPF dynamic blocks, as regular dynamic block already are.

  References: #5845, pull request 5845

• Ensure large numbers are shown correctly in the API.

  References: #6211, pull request 6401

• Add option to showRules() to truncate the output length.

  References: #5763, pull request 6402

• Fix several warnings reported by clang’s analyzer and cppcheck, should lead to small performance increases.

  References: pull request 6407

Bug Fixes

• Handle SNMP alarms so we can reconnect to the daemon.

  References: #5327, pull request 5328

• Fix signed/unsigned comparison warnings on ARM.

  References: #5489, pull request 5597

• Keep trying if the first connection to the remote logger failed

  References: pull request 5770

• Fix escaping unusual DNS label octets in DNSName is off by one (Kees Monshouwer).

  References: pull request 6018

• Avoid assertion errors in NewServer() (Chris Hofstaedtler).

  References: pull request 6403

Removals

• Remove the --daemon option from dnsdist.

  References: #6329, pull request 6394

1.2.1

Released: 16th of February 2018

Please review the Upgrade Guide before upgrading from versions < 1.2.x.

New Features

• Add configuration option to disable IP_BIND_ADDRESS_NO_PORT (Dan McCombs).

  References: pull request 5880

Improvements

• Handle bracketed IPv6 addresses without ports (Chris Hofstaedtler).

  References: pull request 6057

Bug Fixes

• Make dnsdist dynamic truncate do right thing on TCP/IP.

  References: pull request 5647

• Add missing QPSAction

  References: pull request 5686

• Don’t create a Remote Logger in client mode.

  References: pull request 5847

• Use libsodium’s CFLAGS, we might need them to find the includes.

  References: pull request 5858

• Keep the TCP connection open on cache hit, generated answers.

  References: pull request 6012

• Add the missing <sys/time.h> include to mplexer.hh for struct timeval.

  References: pull request 6041

• Sort the servers based on their ‘order’ after it has been set.

  References: pull request 6043

• Quiet unused variable warning on macOS (Chris Hofstaedtler).

  References: pull request 6073

• Fix the outstanding counter when an exception is raised.

  References: #5652, pull request 6094

• Do not connect the snmpAgent from a dnsdist client.

  References: #6163, pull request 6164

1.2.0

Released: 21st of August 2017

Please review the Upgrade Guide before upgrading from versions < 1.2.x.

New Features

• Add an option to export CNAME records over protobuf.

  References: #4709, pull request 4776

• Add TCP management options from RFC 7766 section 10.

  References: pull request 4611

• Add an option to ‘mute’ UDP responses per bind.

  References: #4527, pull request 4536

• Save history to home-dir, only use CWD as a last resort.

  References: #4562, pull request 4779

• Add the setRingBuffersSize() directive to allows changing the ringbuffer size.

  References: pull request 4898

• Allow TTL alteration via Lua.

  References: #4707, pull request 4787

• Add RDRule() to match queries with the RD flag set.

  References: pull request 4837

• Add setWHashedPertubation() for consistent whashed results.

  References: pull request 4897

• Add tcpConnectTimeout to newServer().

  References: pull request 4818

• Add cache hit response rules.

  References: #4708, pull request 4788, pull request 5036

• Add SNMP support.

  References: pull request 4989, pull request 5123, pull request 5204

• Allow passing DNSNames as DNSRules.

  References: pull request 5070

• Add support for setting the server selection policy on a per pool basis (Robin Geuze).

  References: pull request 5113

• Add a suffixMatch parameter to PacketCache:expungeByName() (Robin Geuze).

  References: pull request 5159

• Add an option so the packet cache entries don’t age.

  References: #5126, pull request 5136

• Add QNameRule().

  References: pull request 5235

• Add an optional action to addDynBlocks().

  References: pull request 5337

• Add an optional interface parameter to addLocal()/setLocal().

  References: pull request 5344

• Make a truncate action available to DynBlock and Lua.

  References: pull request 5386

• Implement a runtime changeable rule that matches IP address for a certain time called TimedIPSetRule().

  References: pull request 5336

• Add support for returning several IPs to spoof from Lua.

  References: pull request 5496

• Add Lua bindings to be able to rotate DNSCrypt keys, see DNSCrypt.

  References: #5420, #5507, pull request 5490, pull request 5508

• Add the capability to set arbitrary tags in protobuf messages.

  References: pull request 5396, pull request 5577

• Add setConsoleConnectionsLogging().

  References: #5565, pull request 5581

Improvements

• Merge the client and server nonces to prevent replay attacks.

  References: pull request 4815

• Store the computed shared key and reuse it for the response for DNSCrypt messages.

  References: pull request 4813, pull request 4926

• Add setTCPUseSinglePipe() to use a single TCP waiting queue.

  References: pull request 4817

• Add sendSizeAndMsgWithTimeout to send size and data in a single call and use it for TCP Fast Open towards backends.

  References: #5494, pull request 4985, pull request 5501

• Tune systemd unit-file for medium-sized installations (Winfried Angele).

  References: pull request 4958

• Add the possibility to fill a NetmaskGroup (using NetmaskGroup:addMask()) from exceeds* results.

  References: pull request 5185

• Add labels count to StatNode, only set the name once.

  References: pull request 5353

• DNSName: Check that both first two bits are set in compressed labels.

  References: #4851, pull request 4852

• Handle unreachable servers at startup, reconnect stale sockets

  References: #4131, #4155, pull request 4285

• Gracefully handle invalid addresses in newServer().

  References: #4471, pull request 4474

• Use IP_BIND_ADDRESS_NO_PORT when available.

  References: pull request 4786

• Add an optional seconds parameter to statNodeRespRing().

  References: #4660, #4775, pull request 4780

• Report a more specific lua version and report luajit in --version.

  References: pull request 4910

• Prevent issues by unshadowing variables.

  References: pull request 5056

• Register DNSName::chopOff (@plzz).

  References: pull request 4920

• Make includeDirectory() work sorted (Robin Geuze).

  References: #5053, pull request 5150, pull request 5171

• Allow embedded NULs in strings received from Lua.

  References: pull request 5147

• Cleanup closed TCP downstream connections.

  References: pull request 5163

• Improve reporting of C++ exceptions that bubble up via Lua.

  References: pull request 5230

• Add better logging on queries that get dropped, timed out or received.

  References: pull request 5253

• Print useful messages when query and response actions are mixed.

  References: pull request 5342

• Add DNSRule::toString() and add virtual destructors to DNSRule, DNSAction and DNSResponseAction so the destructors of derived classes are run even when deleted via the base type.

  References: pull request 5497

• Don’t use square brackets for IPv6 in Carbon metrics.

  References: #5538, pull request 5579

Bug Fixes

• Unified -k and setKey() behaviour for client and server mode now.

  References: pull request 5199

• Refactor SuffixMatchNode using a SuffixMatchTree.

  References: #4761, pull request 4950

• Get rid of std::move() calls preventing copy elision.

  References: pull request 5359

• Send an HTTP 404 on unknown API paths.

  References: pull request 5089

• LuaWrapper: Use the correct index when storing a function.

  References: pull request 4775

• Send a latency of 0 over carbon, null over API for down servers.

  References: #4689, pull request 4785

• Fix negative port detection for IPv6 addresses on 32-bit.

  References: pull request 4911

• Fix crashed on SmartOS/Illumos (Roman Dayneko).

  References: #4579, pull request 4877

• Change truncateTC to defaulting to off, having it enabled by default causes an compatibility with RFC 6891 (Robin Geuze).

  References: #4857, pull request 4859

• Don’t cache answers without any TTL (like SERVFAIL).

  References: #4983, pull request 4987, pull request 5037

• Fix destination port reporting on “any” binds.

  References: pull request 5194

• Correctly truncate EDNS Client Subnetmasks.

  References: pull request 5320

• Fix RecordsTypeCountRule()’s handling of the # of records in a section.

  References: #5365, pull request 5369

• Change stats functions to always return lowercase names (Robin Geuze).

  References: #5287, pull request 5383

• Only use TCP Fast Open when supported and prevent compiler warnings.

  References: pull request 5449, pull request 5454

• Skip timeouts on the response latency graph.

  References: #5559, pull request 5563

• Copy the DNS header before encrypting it in place.

  References: #5566, pull request 5580

Removals

• Remove BlockFilter.

  References: #5513, pull request 5514

• Deprecate syntactic sugar functions.

  References: #5069, pull request 5526

misc

• Fix potential pointer wrap-around on 32 bits.

  References: pull request 5630

• Make the API available with an API key only.

  References: pull request 5631

1.1.0

Released December 29th 2016

Changes since 1.1.0-beta2:

Improvements

• #4783: Add -latomic on powerpc
• #4812: Handle header-only responses, handle Refused as Servfail in the cache

Bug fixes

• #4762: SuffixMatchNode: Fix an insertion issue for an existing node
• #4772: Fix dnsdist initscript config check

1.1.0-beta2

Released December 14th 2016

Changes since 1.1.0-beta1:

New features

• #4518: Fix dynblocks over TCP, allow refusing dyn blocked queries
• #4519: Allow altering the ECS behavior via rules and Lua
• #4535: Add DNSQuestion:getDO()
• #4653: getStatisticsCounters() to access counters from Lua
• #4657: Add includeDirectory(dir)
• #4658: Allow editing the ACL via the API
• #4702: Add setUDPTimeout(n)
• #4726: Add an option to return ServFail when no server is available
• #4748: Add setCacheCleaningPercentage()

Improvements

• #4533: Fix building with clang on OS X and FreeBSD
• #4537: Replace luawrapper’s std::forward/std::make_tuple combo with std::forward_as_tuple (Sangwhan “fish” Moon)
• #4596: Change the default max number of queued TCP conns to 1000
• #4632: Improve dnsdist error message on a common typo/config mistake
• #4694: Don’t use a const_iterator for erasing (fix compilation with some versions of gcc)
• #4715: Specify that dnsmessage.proto uses protobuf version 2
• #4765: Some service improvements

Bug fixes

• #4425: Fix a protobuf regression (requestor/responder mix-up) caused by a94673e
• #4541: Fix insertion issues in SuffixMatchTree, move it to dnsname.hh
• #4553: Flush output in single command client mode
• #4578: Fix destination address reporting
• #4640: Don’t exit dnsdist on an exception in maintenance
• #4721: Handle exceptions in the UDP responder thread
• #4734: Add the TCP socket to the map only if the connection succeeds. Closes #4733
• #4742: Decrement the queued TCP conn count if writing to the pipe fails
• #4743: Ignore newBPFFilter() and newDynBPFFilter() in client mode
• #4753: Fix FD leak on TCP connection failure, handle TCP worker creation failure
• #4764: Prevent race while creating new TCP worker threads

1.1.0-beta1

Released September 1st 2016

Changes since 1.0.0:

New features

• #3762 Teeaction: send copy of query to second nameserver, sponge responses
• #3876 Add showResponseRules(), {mv,rm,top}ResponseRule()
• #3936 Filter on opcode, records count/type, trailing data
• #3975 Make dnsdist {A,I}XFR aware, document possible issues
• #4006 Add eBPF source address and qname/qtype filtering
• #4008 Node infrastructure for querying recent traffic
• #4042 Add server-side TCP Fast Open support
• #4050 Add clearRules() and setRules()
• #4114 Add QNameLabelsCountRule() and QNameWireLengthRule()
• #4116 Added src boolean to NetmaskGroupRule to match destination address (Reinier Schoof)
• #4175 Implemented query counting (Reinier Schoof)
• #4244 Add a setCD parameter to set cd=1 on health check queries
• #4284 Add RCodeRule(), Allow, Delay and Drop response actions
• #4305 Add an optional Lua callback for altering a Protobuf message
• #4309 Add showTCPStats function (RobinGeuze)
• #4329 Add options to LogAction() so it can append (instead of truncate) (Duane Wessels)

Improvements

• #3714 Add documentation links to dnsdist.service (Ruben Kerkhof)
• #3754 Allow the use of custom headers in the web server
• #3826 Implement a ‘quiet’ mode for SuffixMatchNodeRule()
• #3836 Log the content of webserver’s exceptions
• #3858 Only log YaHTTP’s parser exceptions in verbose mode
• #3877 Increase max FDs in systemd unit, warn if clearly too low
• #4019 Add an optional addECS option to TeeAction()
• #4029 Add version and feature information to version output
• #4079 Return an error on RemoteLog{,Response}Action() w/o protobuf
• #4246 API now sends pools as a JSON array instead of a string
• #4302 Add help() and showVersion()
• #4286 Add response rules to the API and Web status page
• #4068 Display the dyn eBPF filters stats in the web interface

Bug fixes

• #3755 Fix RegexRule example in dnsdistconf.lua
• #3773 Stop copying the HTTP request headers to the response
• #3837 Remove dnsdist service file on trusty
• #3840 Catch WrongTypeException in client mode
• #3906 Keep the servers ordered inside pools
• #3988 Fix grepq() output in the README
• #3992 Fix some typos in the AXFR/IXFR documentation
• #3995 Fix comparison between signed and unsigned integer
• #4049 Fix dnsdist rpm building script #4048 (Daniel Stirnimann)
• #4065 Include editline/readline.h instead of readline.h/history.h
• #4067 Disable eBPF support when BPF_FUNC_tail_call is not found
• #4069 Fix a buffer overflow when displaying an OpcodeRule
• #4101 Fix $ expansion in build-dnsdist-rpm
• #4198 newServer setting maxCheckFailures makes no sense (stutiredboy)
• #4205 Prevent the use of “any” addresses for downstream server
• #4220 Don’t log an error when parsing an invalid UDP query
• #4348 Fix invalid outstanding count for {A,I}XFR over TCP
• #4365 Reset origFD asap to keep the outstanding count correct
• #4375 Tuple requires make_tuple to initialize
• #4380 Fix compilation with clang when eBPF support is enabled

1.0.0

Released April 21st 2016

Changes since 1.0.0-beta1:

Improvements

• #3700 Create user from the RPM package to drop privs
• #3712 Make check should run testrunner
• #3713 Remove contrib/dnsdist.service (Ruben Kerkhof)
• #3722 Use LT_INIT and disable static objects (Ruben Kerkhof)
• #3724 Include PDNS_CHECK_OS in configure (Chris Hofstaedtler)
• #3728 Document libedit Ctrl-R workaround for CentOS 6
• #3730 Make topBandwidth() behave like other top* functions
• #3731 Clarify a bit the documentation of load-balancing policies

Bug fixes

• #3711 Building rpm needs systemd headers (Ruben Kerkhof)
• #3736 Add missing Lua binding for NetmaskGroupRule()
• #3739 Drop privileges after daemonizing and writing our pid

1.0.0-beta1

Released April 14th 2016

Changes since 1.0.0-alpha2:

New features

• Per-pool packet cache
• Some actions do not stop the processing anymore when they match, allowing more complex setups: Delay, Disable Validation, Log, MacAddr, No Recurse and of course None
• The new RE2Rule() is available, using the RE2 regular expression library to match queries, in addition to the existing POSIX-based RegexRule()
• SpoofAction() now supports multiple A and AAAA records
• Remote logging of questions and answers via Protocol Buffer

Improvements

• #3405 Add health check logging, maxCheckFailures to backend
• #3412 Check config
• #3440 Client operation improvements
• #3466 Add dq binding for skipping packet cache in LuaAction (Jan Broer)
• #3499 Add support for multiple carbon servers
• #3504 Allow accessing the API with an optional API key
• #3556 Add an option to limit the number of queued TCP connections
• #3578 Add a disable-syslog option
• #3608 Export cache stats to carbon
• #3622 Display the ACL content on startup
• #3627 Remove ECS option from response’s OPT RR when necessary
• #3633 Count “TTL too short” cache events
• #3677 systemd-notify support

Bug fixes

• #3388 Lock the Lua context before executing a LuaAction
• #3433 Check that the answer matches the initial query
• #3461 Fix crash when calling rmServer() with an invalid index
• #3550,#3551 Fix build failure on FreeBSD (Ruben Kerkhof)
• #3594 Prevent EOF error for empty console response w/o sodium
• #3634 Prevent dangling TCP fd in case setupTCPDownstream() fails
• #3641 Under threshold, QPS action should return None, not Allow
• #3658 Fix a race condition in MaxQPSIPRule

1.0.0-alpha2

Released February 5th 2016

Changes since 1.0.0-alpha1:

New features

• Lua functions now receive a DNSQuestion dq object instead of several parameters. This adds a greater compatibility with PowerDNS and allows adding more parameters without breaking the API (#3198)
• Added a source option to newServer() to specify the local address or interface used to contact a downstream server (#3138)
• CNAME and IPv6-only support have been added to spoofed responses (#3064)
• grepq() can be used to search for slow queries, along with topSlow()
• New Lua functions: addDomainCNAMESpoof(), AllowAction() by @bearggg, exceedQRate(), MacAddrAction(), makeRule(), NotRule(), OrRule(), QClassRule(), RCodeAction(), SpoofCNAMEAction(), SuffixMatchNodeRule(), TCPRule(), topSlow()
• NetmaskGroup support have been added in Lua (#3144)
• Added MacAddrAction() to add the source MAC address to the forwarded query (#3313)

Bug fixes

• An issue in DelayPipe could make dnsdist crash at startup
• downstream-timeouts metric was not always updated
• truncateTC was unproperly updating the response length (#3126)
• DNSCrypt responses larger than queries were unproperly truncated
• An issue prevented info message from being displayed in non-verbose mode, fixed by Jan Broer
• Reinstating an expired Dynamic Rule was not correctly logged (#3323)
• Initialized counters in the TCP client thread might have cause FD and memory leak, reported by Martin Pels (#3300)
• We now drop queries containing no question (qdcount == 0) (#3290)
• Outstanding TCP queries count was not always correct (#3288)
• A locking issue in exceedRespGen() might have caused crashes (#3277)
• Useless sockets were created in client mode (#3257)
• addAnyTCRule() was generating TC=1 responses even over TCP (#3251)

Web interface

• Cleanup of the HTML by Sander Hoentjen
• Fixed an XSS reported by @janeczku (#3217)
• Removed remote images
• Set the charset to UTF-8, added some security-related and CORS HTTP headers
• Added server latency by Jan Broer (#3201)
• Switched to official minified versions of JS scripts, by Sander Hoentjen (#3317)
• Don’t log unauthenticated HTTP request as an authentication failure

Various documentation updates and minor cleanups:

• Added documentation for Advanced DNS Protection features (Dynamic rules, maintenance())
• Make topBandwidth() default to the top 10 clients
• Replaced readline with libedit
• Added GPL2 License (#3200)
• Added incbin License (#3269)
• Updated completion rules
• Removed wrong option --daemon-no by Stefan Schmidt

1.0.0-alpha1

Released December 24th 2015

Initial release