# Kea 1.8.2, Dec 16th 2020, Release Notes Welcome to Kea 1.8.2, the second maintenance release of the 1.8 series. Kea is a DHCP implementation developed by Internet Systems Consortium, Inc. that features fully functional DHCPv4 and DHCPv6 servers, a dynamic DNS update daemon, a Control Agent (CA) that provides a REST API to control the DHCP and DNS update servers, an example shell client to connect to the CA, a daemon that is able to retrieve YANG configuration and updates from Sysrepo, and a DHCP performance-measurement tool. Both DHCP servers support server discovery, address assignment, renewal, rebinding, release, decline, information request, DNS updates, client classification, and host reservations. The DHCPv6 server also supports prefix delegation. Lease information is stored in a CSV file by default; it can optionally be stored in a MySQL, PostgreSQL, or Cassandra database instead. Host reservations can be stored in a configuration file, or in a MySQL, PostgreSQL, or Cassandra database. They can also be retrieved from a RADIUS server, although this functionality is somewhat limited. Kea DHCPv4 and DHCPv6 daemons provide support for YANG models, which are stored in a Sysrepo datastore and can be configured via the NETCONF protocol. This is a maintenance release. If you are interested in the latest development releases with new features, please look at the development 1.9.x series. The text below references issue numbers. For more details, visit the Kea GitLab page at https://gitlab.isc.org/isc-projects/kea/issues. The following bug fixes were implemented since version 1.8.1: 1. **Fix for the `lease4-update` command in multi-threaded DHCPv4**. A bug in the `lease4-update` command was discovered when the DHCPv4 server was running in multi-threaded mode. This command is used in HA scenarios. The bug caused the server to fail to update the lease properly, while reporting incorrectly that the update was successful. This has now been fixed. #1572 2. **Missing schema update scripts**. Kea previously failed to install some schema update scripts when using the `make install` command. This problem is now resolved. #1580 3. **Compilation fix for latest Cassandra driver**. The Kea code now compiles properly with the latest versions of cpp-driver, which is required for Cassandra database support. #1579 4. **Compilation warning in host cache fixed**. A minor compilation warning in the host cache hook library has been fixed. #1582 ## Incompatible Changes There are no backward-incompatible changes introduced in this release. ## 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 hooks libraries are provided under the terms of an 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 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 via https://kb.isc.org/docs/kea-administrator-reference-manual in HTML, plain text, or PDF formats. ISC maintains a public open source code tree, wiki, issue tracking system, milestone planner, and roadmap at https://gitlab.isc.org//isc-projects/kea. 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. If you have any comments or questions about working with Kea, please share them to the Kea Users list (https://lists.isc.org/mailman/listinfo/kea-users). Bugs and feature requests may be submitted via GitLab at https://gitlab.isc.org/isc-projects/kea/issues. ## Changes The following summarizes changes and important upgrade notes since the 1.8.1 ``` 1803. [build] razvan Library version numbers bumped for Kea 1.8.2 stable release version. (Gitlab #1583) 1802. [bug] andrei, razvan Fix trivial logic error in handling the "lease4-update" command manifesting itself on v4 if multi-threading is enabled. Notable affected environment is a HA with the "send-lease-updates" configuration setting explicitly set to true. Prior to this fix, lease updates would not go through to other HA nodes, even though some log lines would say they would. A simple workaround prior to this fix is to disable multi-threading. (Gitlab #1542,#1572) ``` Thank you again to everyone who assisted us in making this release possible. We look forward to receiving your feedback.