[Kea-announce] Kea 0.9.1 released!

Wlodek Wencel wlodek at isc.org
Wed Apr 1 08:44:33 UTC 2015

Kea 0.9.1 was released on 31 March 2015!

Kea is an alternative DHCP implementation being developed by
Internet Systems Consortium, Inc. that features fully functional
DHCPv4, DHCPv6 and Dynamic DNS servers. Both DHCP servers fully
support server discovery, address assignment, renewal, rebinding,
release, DNS updates and host reservation. The DHCPv6 server
supports prefix delegation.

Version 0.9.1 adds the following features to Kea:

* Host Reservation - the ability to add static reservations of addresses
  (DHCPv4 and DHCPv6), prefixes (DHCPv6) and hostnames (DHCPv4 and
  DHCPv6) for  clients. For DHCPv6 clients, several methods have been
  provided to extract  the client's MAC address from the information it
  sends to the server.

* Support for the DHCPv6 Information-Request message.

* The periodic removal of redundant information from the "memfile"
  backend's  lease file. (Prior to this, the file would grow without

* A tool - kea-admin - for administrators to create and update the
  databases used for the MySQL and PostgreSQL backends.

Note: when migrating from Kea 0.9 to 0.9.1:
* The JSON-based configuration file needs to be updated.
* The MySQL/PostgreSQL lease databases (if used) need to be updated.

== Download ==

The kea-0.9.1 source and PGP signature may be downloaded from:


The signature was generated with the ISC code signing key which is
available at :


Kea provides detailed documentation, including installation instructions
and usage tutorials. In addition, all logging messages have unique
documented  explanations. This documentation is included with the
installation or via  http://kea.isc.org/docs/ in HTML, plain text, or
PDF formats.  We also  maintain a public open source code tree and wiki
pages with roadmap and issue  tracking at http://kea.isc.org/.

Limitations and known issues with this DHCP release can be found at :


We'd like 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 configuration  or use case.  Also we would like to hear whether the
documentation is adequate  and accurate (please open tickets for
documentation omissions and errors).  We want to hear from you even if
everything worked.

== Support ==

Professional support will be available when Kea reaches Release 1.0.
Free  best-effort support is provided by our user community via a
mailing list.  Information on all public email lists is available at :


If you have any comments or questions about working with Kea, please
share them  to the Kea Users List


or to  the Kea Jabber room.  Bugs and feature requests may be submitted
via the ticket  tracking system at:


== Changes ==

The following summarizes changes and important upgrade notes since the
previous  release (0.9.1-beta). (See the git history for more details
and additional development.)

919.	[doc]		stephen
	Corrected some configuration examples in the documentation.
	(Trac #3772 git e9f084525bc1eec1cca635c00f33228bf7fac6a4)

918.	[func]		tomek,tmark
	DHCPv6 server now supports static reservations of hostnames
	for clients.  Note this resolves #3708 by reducing the number
	of calls to selectSubnet to once per client request.
	(Trac #3689 git c13c824d9948f7e3f71a65ed43798f3b5c14042c)

917.	[bug]		marcin
	DHCPv4 server may allocate lease for the client which is
	using a non-unique identifier (HW address or client id),
	if the other identifier is unique.
	(Trac #3768, git 0f7a029e2a2a7652d49a0bcd9f49e879fac9136f)

916.	[func]		sar
	Add a log message that indicates when the v4, v6 or
	DHCP-DDNS server has completed processing its
	configuration and is about to enter the loop to process
	(Trac #3755, git c71c7836804842bae51fe79fd599c57f5b3d007d)

915.	[func]		tomek, marcin
	The DHCPv6 server now supports the Relay-Supplied Options
	option,	as defined in RFC 6422. The relay can insert options
	in the relay forward message that the server will send back
	to the client if certain criteria are met.
	(Trac #3705, git 4772ee589712f5359ecbd79ebf71fbc7bb68741b)

914.	[bug]		marcin
	DHCPv4 server: corrected the logging message issued when
	the server could not allocate or offer the lease for the
	client. The corrected message contains the client-id,
	hardware address, ciaddr and requested-ip-address.
	(Trac #3737, git 4c56e1348c5d50eaa5b3083a0a8c346966e1b603)

913.	[bug]		sar
	Handle recovery properly should the LFC crash while
	manipulating files after completing processing.
	(Trac #3759, git bb3b4d14119392261a1766da2b406fa46d4c0f21)

912.	[doc]		sar
	Added sections on LFC to the administrators and developers
	(Trac #3720, git 828b801e6a4616de331588076ab9c4c35677595)

911.	[func]*		marcin
	libdhcp++: the C++ objects representing network interfaces
	(Iface objects) are now non-copyable. As a result, the API
	of the Interface Manager functions returning the pointers
	to the Iface objects has changed.
	(Trac #3715, git 7415c74e38e13385a75e7200cb23b7d6ca86df7f)

910.	[func]		marcin
	DHCPv4 server supports static reservations of the hostnames
	for the clients.
	(Trac #3688, git b5c50e2aff64da05b439da8d5fa4913fc8a704ca)

909.	[bug]		marcin
	Removed many cppcheck errors in the code. Also removed the
	dhcp-ubench test tool.
	(Trac #3736, git 552aea126e968b78292ae80c1c6a03c9ef4dcdcd)

908.	[bug]		marcin
	Handle overflows during time conversions in the MySQL and
	PostgreSQL lease database backends.
	(Trac #3673, git 27b4e4590fdee507f0e877d7b771dc6c6457a4b5)

907.	[doc]		tmark
	Corrected depictions of kea-admin command line options for
	database-name in Kea Administrator Reference. Prior to this
	the document showed "-d" as the database name option, when
	in fact it is "-n".
	(Trac #3742, git ec427e4c9d008abc800f87eda3c0024b35e4c2e2)

906.	[doc]		tmark
	Added description of a restriction on extracting a MAC
	address from an IPv6 link-local address to the Kea
	Administrator Reference, section 8.8, item "ipv6-link-local".
	(Trac #3691, git ca9f5541cb36f815ac614c5c21088d545eafcac6)

905.	[func]		marcin
	DHCPv4 server assigns an address from the dynamic address
	pool if the reserved address is in use by another client.
	(Trac #3694, git 95b09ff53b941691cba172c933de0682b05a0d85)

904.	[bug]		marcin
	FreeBSD-only change: Disabled unit test expecting the death
	of the process when conditional variable was destroyed when
	the thread was still waiting for the variable. This is due
	invalid behavior of the pthread_cond_destroy on FreeBSD
	which should return EBUSY in such case, whereas it returns
	success error code.
	(Trac #3710, git bdb442402ef023055715baf597c401c9974a7fb2)

903.	[bug]		stephen
	Corrected arithmetical error in the rate control module of
	perfdhcp which led to the incorrect calculation of the rate
	at which packets should be sent.
	(Trac #3729, git bb5bca3d9b68abc4b83abdd204bfb075dda630ac)

902.	[bug]		marcin
	Fixed the bug in the DHCPv4 server whereby the server
	reconfiguration (using the SIGHUP signal) failed because
	of sockets remaining open since the previous configuration.
	(Trac #3730, git 3ceb0cd97cf5e44e8fc151d0a38db553530dd3ed)

Thank you again to everyone who assisted us in making this release
possible. If you would like to contribute to ISC to assist us in
continuing to make quality open source software, please visit our
donations page at http://www.isc.org/donate-to-isc/.

We look forward to receiving your feedback.

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