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# Kea 1.9.9, June 30th 2021, Release Notes
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Welcome to Kea 1.9.9, the tenth monthly release of the 1.9 development branch. As with any other development release, use this with caution: development releases are not recommended for production use.
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This release adds new features, improves existing features, clarifies documentation, and fixes a few bugs. The most notable changes introduced in this version are:
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1. **Title** - Description. [#GLAB]
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## Incompatible Changes
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1. **Title** - Description.
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## Known Issues
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For details on known issues, visit:
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https://gitlab.isc.org/isc-projects/kea/-/wikis/known-issues-list
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And for the list of issues marked as bugs:
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https://gitlab.isc.org/isc-projects/kea/issues?label_name%5B%5D=bug
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## Release Model
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The Kea project has a significant production deployment base with users who are looking for stability, rather than a constant stream of new "bleeding-edge" features. At the same time, we want to continue developing the software and add some new powerful, but difficult-to-implement, features. To meet both of these requirements we have both Stable and Development branches.
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Stable releases are what you would expect: stable, released infrequently, without new features or significant changes, very well-tested. These can be identified by an even-numbered minor version number. The current stable release is 1.8.2. The older stable version of 1.6.3 is also available. If we discover important bugs that require fixing, we may release additional maintenance versions on the 1.8 branch, but that will be determined on a case-by-case basis. The next major stable version will be 2.0.0.
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Development releases can be easily identified by an odd minor version number: for example, 1.9.0 is a development release. Subsequent releases on the same minor release branch get numbered with 1.9.1, 1.9.2, and so on.
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Our goal is to make the development release available on the last Wednesday of each month. There may be exceptions (such as during holidays), but that's the general plan.
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We encourage users to test the development releases and report back their findings.
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For more details on the plan, see ISC's Software Support Policy at:
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https://kb.isc.org/docs/aa-00896
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## Kea Overview
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Kea is a DHCP implementation developed by Internet Systems Consortium 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.
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This text references issue numbers. For more details, visit the Kea GitLab page at:
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https://gitlab.isc.org/isc-projects/kea/-/issues
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## License
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This version of Kea is released under the Mozilla Public License, version 2.0.
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https://www.mozilla.org/en-US/MPL/2.0
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The premium and subscriber-only hooks libraries are provided in source code form, under the terms of an End User License Agreement (you will get the source code that you can modify freely, but you are not permitted to redistribute it).
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## Download
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Pre-built ISC packages for current versions of the most popular Linux operating systems are available at:
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https://cloudsmith.io/~isc/repos/
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The Kea source and PGP signature for this release may be downloaded from:
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https://www.isc.org/download
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The signature was generated with the ISC code-signing key which is available at:
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https://www.isc.org/pgpkey
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ISC provides detailed documentation, including installation instructions and usage tutorials, in the Kea Administrator Reference Manual (ARM). Documentation is included with the installation, at:
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* https://kea.readthedocs.io/en/latest/
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* or via https://kb.isc.org/docs/kea-administrator-reference-manual in HTML, plain text, or PDF formats
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ISC maintains a public open source code tree, a wiki, an issue tracking system, milestone planning, and a roadmap at:
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https://gitlab.isc.org/isc-projects/kea
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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 at:
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https://lists.isc.org/mailman/listinfo/kea-users
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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.
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## Support
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Professional support for Kea is available from ISC. We encourage all professional users to consider this option; Kea development and maintenance are funded with support subscriptions. For more information on ISC's Kea and DHCP software support see:
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https://www.isc.org/support/
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Free best-effort support is provided by our user community via a mailing list. Information on all public email lists is available at:
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https://www.isc.org/community/mailing-List
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If you have any comments or questions about working with Kea, please share them on the Kea Users List:
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https://lists.isc.org/mailman/listinfo/kea-users
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Bugs and feature requests may be submitted via GitLab at:
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https://gitlab.isc.org/isc-projects/kea/-/issues
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## Changes
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The following summarizes changes since the previous release of 1.9.8:
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```
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1917. [func] tomek
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DHCPv4 and DHCPv6 are now more consistent when logging the
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reasons why a packet was dropped. This information is now
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available on debuglevel 15. Also added a section in the ARM
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discussing the debuglevels. The subnet selection failed log
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message now provides more useful information about the subnet.
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(Gitlab #1915, #1916)
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1916. [func] razvan
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The Kea DHCPv4 server accepts requests using server identifier
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configured at client class level.
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(Gitlab #1836)
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1915. [func] andrei
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DOCSIS options are no longer offered to any vendor other than
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Cable Labs (vendor-id == 4491). This was not an explicit check
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previously and the match to the vendor relied on a technicality
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such that other vendors could have received these options under
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certain conditions.
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(Gitlab #1894)
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1914. [func]* tomek
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The Cassandra (CQL) support is being deprecated, both for
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leases and host backends. For the time being the features
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will produce a warning, but will otherwise function normally.
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However, the functionality will be removed in the future
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Kea releases.
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(Gitlab #1892)
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1913. [doc] tomek
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Kea adopted Developer Certificate of Origin for incoming
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contributions. Please see the CONTRIBUTING.md file for details.
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(Gitlab #1895)
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1912. [doc] fdupont, tomek
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The Kea configuration syntax is now documented in BNF notation.
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See new appendix in the ARM.
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(Gitlab #504)
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1911. [bug] andrei
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Fixed a minor regression where kea-admin and keactrl would output
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technical errors like "unbound variable" instead of more helpful
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messages like "missing backend" because of the undefined variable
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checks introduced in 1.9.4. Added tests to further prevent it.
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(Gitlab #1653)
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1910. [func] andrei
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Extended perfdhcp to send v4 DHCPRELEASE messages via -F flag.
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(Gitlab #1119)
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1909. [build] fdupont
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Experimental support for Heimdal implementation of GSS-API
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with Kerberos 5 added.
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(Gitlab #1909)
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1908. [func] razvan
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Added export for V4 option 82 (DHO_DHCP_AGENT_OPTIONS) and
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respective suboptions 1 (RAI_OPTION_AGENT_CIRCUIT_ID) and
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suboption 2 (RAI_OPTION_REMOTE_ID) in the run script hooks
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library.
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(Gitlab #1840)
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1907. [doc] peterd, andrei, razvan
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Many Kea ARM corrections and updates.
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(Gitlab #1917)
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1906. [func] fdupont
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Added support for the TKEY DNS resource record.
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(Gitlab #1880)
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1905. [build] fdupont
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Added an optional --with-gssapi switch to the configure
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script. It checks for the presence and suitability of
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packages pertinent to GSS-TSIG. This has been added in
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anticipation of future work and does not add any
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functionality to Kea.
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(Gitlab #1884)
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```
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Thank you again to everyone who assisted us in making this release possible.
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We look forward to receiving your feedback. |
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