OpenThread Files

What's Changed

🚀 Features

• [sub-mac] fix mCslLastSync type and timestamp tracking by @abtink in https://github.com/openthread/openthread/pull/13457
• [radio] add Radio::ConvertUncertaintyToUsec() helper by @abtink in https://github.com/openthread/openthread/pull/13458
• [sub-mac] generalize timed transmission handling and states by @abtink in https://github.com/openthread/openthread/pull/13460
• [mac-frame] consolidate frame parsing and payload building by @abtink in https://github.com/openthread/openthread/pull/13466
• [ip6-prefix] rename ContainsPrefix() to IsCoveredBy() by @abtink in https://github.com/openthread/openthread/pull/13468
• [rcp] remove redundant keyIdMode check for SPINEL_PROP_RCP_MAC_KEY by @abtink in https://github.com/openthread/openthread/pull/13473
• [mac-frame] simplify and optimize Frame::ToInfoString() by @abtink in https://github.com/openthread/openthread/pull/13476
• [mle] introduce TxChallengeTable for routers by @abtink in https://github.com/openthread/openthread/pull/13470
• github-actions: bump github/codeql-action/init from 4.37.3 to 4.37.6 by @jwhui in https://github.com/openthread/openthread/pull/13488
• [sub-mac] simplify CSL debug check handling by @abtink in https://github.com/openthread/openthread/pull/13479
• [meshcop] honor finalize response state and provisioning URL requirement by @aussinfosec in https://github.com/openthread/openthread/pull/13418
• github-actions: bump ossf/scorecard-action from 2.4.3 to 2.4.4 by @jwhui in https://github.com/openthread/openthread/pull/13508
• [srp-client] add counters for performance tracking by @sarveshkumarv3 in https://github.com/openthread/openthread/pull/13137
• [mac] remove unused Frame::AddAddrSizeTo() declaration by @abtink in https://github.com/openthread/openthread/pull/13512
• [csl] calculate CSL window clock drift using sample time by @abtink in https://github.com/openthread/openthread/pull/13510
• [mac] improve frame rx failure logging for unvalidated frames by @abtink in https://github.com/openthread/openthread/pull/13514
• [mac] remove unused Multipurpose frame type and wake-up handling by @abtink in https://github.com/openthread/openthread/pull/13511
• [mac-frame] simplify TxFrame::GenerateEnhAck() by @abtink in https://github.com/openthread/openthread/pull/13498
• [mac-frame] use strongly-typed enums in CalculateKeySource/MicSize by @jwhui in https://github.com/openthread/openthread/pull/13523
• [array] add Array::InsertAt() method by @abtink in https://github.com/openthread/openthread/pull/13522
• [mac] rename local variables in HandleReceivedFrame to follow style by @abtink in https://github.com/openthread/openthread/pull/13527
• [sub-mac] use ShouldHandle(kCap...) directly and remove wrappers by @abtink in https://github.com/openthread/openthread/pull/13528
• [ci] add timeouts to bootstrap steps and wget calls in workflows by @jwhui in https://github.com/openthread/openthread/pull/13529
• [mac-frame] remove redundant presence check methods in Mac::Frame by @abtink in https://github.com/openthread/openthread/pull/13515
• [mac] refactor Frame Type and Version enums and FCF helpers by @abtink in https://github.com/openthread/openthread/pull/13516
• [csl] simplify SubMac::SetCslParams() by @abtink in https://github.com/openthread/openthread/pull/13530
• [ncp] bridge DNSSD TXT and address resolvers over Spinel by @hemanth-silabs in https://github.com/openthread/openthread/pull/13311
• [mac-frame] parse and store unpacked FCF/SCF fields in ParseInfo by @abtink in https://github.com/openthread/openthread/pull/13534
• [dataset] add additional validation for dataset range and formatting by @sarveshkumarv3 in https://github.com/openthread/openthread/pull/13518
• [bit-utils] replace endian-specific bit helpers with template version by @abtink in https://github.com/openthread/openthread/pull/13531
• [config] rename legacy wake configs to use new Thread Direct terms by @abtink in https://github.com/openthread/openthread/pull/13535
• [dhcp6-pd-client] use OwnedPtr in receive path by @abtink in https://github.com/openthread/openthread/pull/13546
• github-actions: bump github/codeql-action/analyze from 4.37.6 to 4.37.8 by @jwhui in https://github.com/openthread/openthread/pull/13548
• [mac] optimize rx frame filtering by deferring neighbor lookup by @abtink in https://github.com/openthread/openthread/pull/13551
• [mac] pass only data frames to MeshForwarder by @abtink in https://github.com/openthread/openthread/pull/13552
• [style] replace all instances of constexpr static with static constexpr by @jwhui in https://github.com/openthread/openthread/pull/13557
• [mac-frame] fix "IEE 802" typo in Doxygen comment by @jwhui in https://github.com/openthread/openthread/pull/13556
• [mac] use kPanIdBroadcast instead of kShortAddrBroadcast for PAN ID by @jwhui in https://github.com/openthread/openthread/pull/13558
• [mac] centralize CslPeriodToUsec() by @abtink in https://github.com/openthread/openthread/pull/13559
• [sub-mac] fix casing of BackOff to Backoff by @jwhui in https://github.com/openthread/openthread/pull/13561
• [posix] set OPENTHREAD_POSIX_CONFIG_INSTALL_EXTERNAL_ROUTES_ENABLE to 0 by @jwhui in https://github.com/openthread/openthread/pull/13562
• [sub-mac] introduce unified ReceiveAt logic for timed RX by @abtink in https://github.com/openthread/openthread/pull/13491

🐛 Bug Fixes

• [pktverify] fix IPv6 address parsing for IPv4-mapped addresses by @jwhui in https://github.com/openthread/openthread/pull/13461
• [csl] put radio to sleep in RadioSample() by @parag-silabs in https://github.com/openthread/openthread/pull/13472
• [ip6] use first-fragment unfragmentable length consistently in reassembly by @aussinfosec in https://github.com/openthread/openthread/pull/13409
• [otci] drain pending lines in OtCliCommandRunner before timing out by @jwhui in https://github.com/openthread/openthread/pull/13494
• [thread-cert] handle BrokenPipeError on resetting node in simulator by @jwhui in https://github.com/openthread/openthread/pull/13495
• [thci] use 'br state' to check isBorderRoutingEnabled by @bukepo in https://github.com/openthread/openthread/pull/13506
• [dataset] signal dataset change event only when dataset is saved by @sarveshkumarv3 in https://github.com/openthread/openthread/pull/13499
• [test] fix off-by-one bounds check in mock platform SettingsGet by @jwhui in https://github.com/openthread/openthread/pull/13509
• [trel] fix unbounded retry loop on invalid peer address by @jwhui in https://github.com/openthread/openthread/pull/13519
• [cli] add CLI_LINK_METRICS_ENH_ACK_VERBOSE_ENABLE config guard (#13435) by @xavraz in https://github.com/openthread/openthread/pull/13441
• [infra-if] free DHCPv6 message on error in HandleDhcp6Received by @jwhui in https://github.com/openthread/openthread/pull/13536
• [ip6] fix out-of-bounds access and length corruption in Prefix by @jwhui in https://github.com/openthread/openthread/pull/13537
• [ip6] fix message buffer leak in otIp6Send() by @jwhui in https://github.com/openthread/openthread/pull/13538
• [mle] validate router ID bounds in router-id lookups by @jwhui in https://github.com/openthread/openthread/pull/13539
• [dataset] fix bounds check order in Dataset::ValidateTlvs() by @jwhui in https://github.com/openthread/openthread/pull/13540
• [meshcop-tlvs] fix kRevMask in VendorStackVersionTlv by @abtink in https://github.com/openthread/openthread/pull/13547
• [posix] do not bind upstream DNS sockets for resolv.conf nameservers by @agners in https://github.com/openthread/openthread/pull/13545
• [spinel] make max power table restoration work and survive old RCPs by @skirmess in https://github.com/openthread/openthread/pull/13524
• [posix] install route for the NAT64 prefix on the Thread interface by @agners in https://github.com/openthread/openthread/pull/13553
• [tcat] restrict TCAT Commissioner's dataset overwriting authorization by @EskoDijk in https://github.com/openthread/openthread/pull/13182

New Contributors

• @skirmess made their first contribution in https://github.com/openthread/openthread/pull/13524

Full Changelog: https://github.com/openthread/openthread/compare/v2026.08.0...v2026.09.0