Wrap some new debugging code with #ifdef DEBUG.

[thirdparty/dhcp.git] / RELNOTES

	    Internet Software Consortium DHCP Distribution
		   Version 3, Beta 2, Patchlevel 5
			  September 19, 2000

			    Release Notes

This is a development snapshot of Version 3 of the Internet Software
Consortium DHCP Distribution.

			     NEW FEATURES

Version 3, Beta 2 of the ISC DHCP Distribution includes the following
features that are new since version 2.0:

     - DHCP Failover Protocol support
     - OMAPI, an API for accessing and modifying the DHCP server and
       client state.
     - Conditional behaviour
     - Storing arbitrary information on leases
     - Address pools with access control
     - Client classing
     - Address allocation restriction by class
     - Relay agent information option support 
     - Dynamic DNS updates
     - Many bug fixes, performance enhancements, and minor new DHCP
       protocol features. 

This beta release is quite new, and is running in production at only a
few sites.   We strongly recommend that you exercise caution in
installing it.   The 3.0 Beta 2 lease file is not backwards compatible
with the 3.0 Beta 1 lease file, so if you have to go back, you will
have to convert your lease files back to the 3.0 Beta 1 format - if
you try to run a 3.0 Beta 1 server on a 3.0 Beta 2 lease file, it will
cheerfully delete all your leases.   Having said that, of course the
way that new releases of open source software become stable is by
people using them, finding the bugs, and reporting the bugs.   So
while we urge you to exercise caution, we would also appreciate any
testing or production use you can safely do.

For information on how to install, configure and run this software,
as well as how to find documentation and report bugs, please consult
the README file.

The Dynamic DNS Update support is a descendent of an implementation
done by Lans Carstensen and Brian Dols at Rose-Hulman Institute of
Technology, Jim Watt at Perkin-Elmer, Irina Goble at Integrated
Measurement Systems, and Brian Murrell at BC Tel Advanced
Communications.  I'd like to express my thanks to all of these good
people here, both for working on the code and for prodding me into
improving it.

		Changes since 3.0 Beta 2 Patchlevel 4

- Incorporated Peter Marschall's proposed change to array/record
  parsing, which allows things like the slp-agent option to be encoded
  correctly.   Thanks very much to Peter for taking the initiative to
  do this, and for doing such a careful job of it (e.g., updating the
  comments)!

- Added an encoding for the slp-agent option.   :')

- Fixed SunOS 4 build.  Thanks to Robert Elz for responding to my
  request for help on this with patches!

- Incorporated a change that should fix a problem reported by Philippe
  Jumelle where when the network connection between two servers is
  lost, they never reconnect.

- Fix client script files other than that for NetBSD to actually use
  make_resolv_conf as documented in the manual page.

- Fix a bug in the packet handling code that could result in a core
  dump.

- Fix a bug in the bootp code where responses on the local net would
  be sent to the wrong MAC address.   Thanks to Jerry Schave for
  catching this one.

		Changes since 3.0 Beta 2 Patchlevel 3

- In the DHCP client, execute client statements prior to using the values
  of options, so that the client configuration can overried, e.g., the
  lease renewal time.

- Fix a reference counting error that would result in very reproducible
  failures in updates, as well as occasional core dumps, if a zone was
  declared without a key.

- Fix some Linux 2.0 compilation problems.

- Fix a bug in scope evaluation during execution of "on" statements that
  caused values not to be recorded on leases.

- If the dhcp-max-message-size option is specified in scope, and the
  client didn't send this option, use the one specified in scope to
  determine the maximum size of the response.

		Changes since 3.0 Beta 2 Patchlevel 2

- Fix a case where spawning subclasses were being allocated
  incorrectly, resulting in a core dump.

- Fix a case where the DHCP server might inappropriately NAK a
  RENEWING client.

- Fix a place dhcprequest() where static leases could leak.

- Include memory.h in omapip_p.h so that we don't get warnings about
  using memcmp().

		Changes since 3.0 Beta 2 Patchlevel 1

- Notice when SIOCFIGCONF returns more data than fit in the buffer -
  allocate a larger buffer, and retry.   Thanks to Greg Fausak for
  pointing this out.

- In the server, if no interfaces were configured, report an error and
  exit.

- Don't ever record a state of 'startup'.

- Don't try to evaluate the local failover binding address if none was
  specified.   Thanks to Joseph Breu for finding this.