# Kea 2.3.3, November 30 2022, Release Notes Welcome to Kea 2.3.3, the fourth monthly release of the 2.3 development series. As with any other development release, use this with caution: development releases are not recommended for production use. Kea is a DHCP implementation developed by Internet Systems Consortium (ISC) that features DHCPv4 and DHCPv6 servers with DNS updating and a REST API; optional database support (MySQL and PostgreSQL); optional RADIUS, Kerberos, and YANG/NETCONF support; and much more. Kea provides extensive management capabilities, including but not limited to: TLS support, run-time configuration monitoring and updates via a REST API, host reservations, client classification, and more. The text below references issue numbers. For more details, visit the Kea GitLab page at https://gitlab.isc.org/isc-projects/kea/issues. This month the Kea team focused on preparations for upcoming features. The following bugfixes and features have been implemented since the previous release, version 2.3.2: 1. **TCP support for Bulk Leasequery**: Added the `libkea_tcp` library that provides support for a generic TCP listener. It will first be used in Bulk Leasequery. [#2583] 2. **Allocation strategies**: Allocation code has been moved from a global scope to a per-subnet scope, in preparation for the introduction of the random lease allocation and the free lease queue methods. [#2348] 3. **ignore-iaid**: If the newly added `ignore-iaid` configuration flag is enabled in the flex-id hook library, IAID will be ignored for IA requests that have exactly one IA_NA or IA_PD suboption. The IAID value is stored as 0 in the lease storage, but it is restored to its initial value in the response back to the client. This behavior breaks RFC compliance, so use it with care. [#2472] 4. **Template classes documentation**: Template classes are now documented in [Kea's Administrator Reference Manual](https://kea.readthedocs.io/en/latest/arm/classify.html?highlight= template-test#configuring-classes). [#2606] 5. **NETCONF**: YANG modules have been updated with three configuration nodes: `extended-info-checks`, `ignore-rai-link-selection`, and `template-test`. The `keatest-module` has also gained a few missing node types. The code has been refactored to accommodate changes more easily in the future. [#2601] 6. **Bug fixes**: The built-in client class ALL can once again be used to apply lease limits and rate limits. [#2615] ## Incompatible Changes Many of the native packages have been substantially updated. See item 2 above for a brief overview, and the new [Installation From Cloudsmith Packages](https://kea.readthedocs.io/en/latest/arm/install.html?highlight =cloudsmith#installation-from-cloudsmith-packages) and [Caveats for Upgrading Kea Packages](https://kea.readthedocs.io/en/latest/arm/install.html?highlight =cloudsmith#caveats-for-upgrading-kea-packages) sections in the Kea ARM for more details. ## License This version of Kea is released under the Mozilla Public License, version 2.0. https://www.mozilla.org/en-US/MPL/2.0 The premium and subscriber-only hook libraries are provided under the terms of a Kea Hooks Basic Commercial End User License Agreement. ## Download Pre-built ISC packages for current versions of the most popular Linux operating systems are available at: https://cloudsmith.io/\~isc/repos/ The Kea source and PGP signature for this release may be downloaded from: https://www.isc.org/download as well as from the Cloudsmith repository. The signature was generated with the ISC code signing key, which is available at: https://www.isc.org/pgpkey ISC provides detailed documentation, including installation instructions and usage tutorials, in the Kea Administrator Reference Manual. Documentation is included with the installation or at https://kea.readthedocs.io/en/latest/index.html. Limitations and known issues with this release can be found at https://gitlab.isc.org/isc-projects/kea/wikis/known-issues-list. We ask users of this software to please let us know how it worked for you and what operating system you tested on. Feel free to share your feedback on the Kea Users mailing list (https://lists.isc.org/mailman/listinfo/kea-users. We would also like to hear whether the documentation is adequate and accurate. Please open tickets in the Kea GitLab project for bugs, documentation omissions and errors, and enhancement requests. We want to hear from you even if everything worked. ## Support Professional support for Kea is available from ISC. We encourage all professional users to consider this option; Kea maintenance is funded with support subscriptions. For more information on ISC's Kea and DHCP software support see https://www.isc.org/support/. Free best-effort support is provided by our user community via a mailing list. Information on all public email lists is available at https://www.isc.org/community/mailing-list. ## Changes The following summarizes changes and important upgrade notes since the 2.3.2 release for Kea core: 2078. [build] andrei The library version numbers have been bumped for the Kea 2.3.3 development release. (Gitlab #2650) 2077. [func] andrei YANG modules have been updated with three configuration nodes: extended-info-checks, ignore-rai-link-selection, template-test. keatest-module has also gained empty, leafref and union nodes for proper testing of all YANG leaf types. Additionally, stable libyang and sysrepo versions are recommended for use in the ARM in place of the previous development versions. (Gitlab #2601) 2076. [doc] razvan Add documentation for template classes and the new parameter 'template-test' which evaluates to a string value. This indicates if the class is spawning classes with the name containing the evaluated value: 'SPAWN_<template-class-name>_<evaluated-value>' only if the value is not empty string. This will also add the packet to the <template-class-name> class. (Gitlab #2606) 2075. [bug] razvan The builtin client class ALL can now be used again to apply lease limits and rate limits. (Gitlab #2615) 2074. [func] tmark Added a new library, libkea_tcp, that provides support for a generic TCP listener. Initially, this library will be used for Bulk LeaseQuery. (Gitlab #2583) And for Kea premium: 159. [func] razvan Added "ignore-iaid" configuration flag in flex-id hooks library which enables the server to ignore incoming IAID value if the packet contains at most one IA_NA or one IA_PD. The IAID value is stored as 0 in the lease storage, but it is restored to its initial value in the response back to the client. (Gitlab #2472) See https://gitlab.isc.org/isc-projects/kea/-/wikis/Release-Notes for a complete list of release notes. Thank you again to everyone who assisted us in making this release possible. We look forward to receiving your feedback.