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List:       dhcp-users
Subject:    ISC DHCP 4.0.0a1 is now available!
From:       "David W. Hankins" <David_Hankins () isc ! org>
Date:       2007-05-22 22:32:45
Message-ID: 20070522223245.GF13523 () isc ! org
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ISC DHCP 4.0.0a1 is now available for download.  ISC DHCP 4.0.0
is a development track engineered primarily for the purpose of
developing DHCPv6 features.

This first ALPHA release has a fully functional stateful DHCPv6 server
and client, but no relay implementation.  Although one binary is used
for both protocols, the server and client can not (yet) operate both
protocols at the same time.  A command line flag is provided to select
protocols.

DHCPv6 Dynamic DNS is supported, via the DHCPv6 FQDN option.  This
implementation has the DHCPv4 and DHCPv6 FQDN options using the
same virtual encapsulated space (so DDNS configuration is identical
for both protocols).

A number of minor imperfections were discovered during release
engineering, a list has been included below along with a full list
of all changes since relevant recent releases.

For a complete list of changes from any previous release, please
consult the RELNOTES file within the source distribution, or on our
website:

    http://www.isc.org/sw/dhcp/dhcp4_0.php

This release, and its OpenPGP-signatures are available now from:

    ftp://ftp.isc.org/isc/dhcp/dhcp-4.0.0a1.tar.gz
    ftp://ftp.isc.org/isc/dhcp/dhcp-4.0.0a1.tar.gz.sha512.asc
    ftp://ftp.isc.org/isc/dhcp/dhcp-4.0.0a1.tar.gz.sha256.asc
    ftp://ftp.isc.org/isc/dhcp/dhcp-4.0.0a1.tar.gz.sha1.asc

ISC's Release Signing Key can be obtained at:

    http://www.isc.org/about/openpgp/


                                KNOWN DEFECTS
                        Scheduled for repair in 4.0.0a2

- "range6 [addr] [addr];" syntax produces a parse error, whereas
  "range6 [addr]/[prefix];" syntax does not.

- The new build environment is a work in progress.  Some dependencies
  (in particular, for the build environment itself) don't appear to be
  working properly, and as a result older Linux (~2.4) and FreeBSD 4.11
  are known not to compile.

- dhclient always emits parameter request lists of 55 bytes in length,
  regardless of configuration.  The trailing bytes are garbage.

- If the server (or possibly relay) encounters an interface that has
  no IP addresses, it will dump core.

                        Changes since 4.0.0-20070413

- Old (expired) leases are now cleaned.

- IPv6 subnets now have support for arbitrary allocation ranges via
  a new 'range6' configuration directive.

- An obviated option code hash lookup to find D6O_CLIENTID was removed.

- Corrected some situations where variables might be used without being
  initialized.

- Silenced several other compiler warnings.

- Include the more standard sys/uio.h rather than rely upon other
  header files to include it (fixes a BSD 4.2 compile failure).

- Duplicate dhclient-script updates for DHCPv6 to all provided scripts.

- DHCPv4 I/O methods that failed to sense hardware address were corrected.

- DHCPv4 is now the default (as documented) rather than DHCPv6.  The default
  was set to DHCPv6 to facilitate ease early development, and forgotten.

- Corrected a segmentation violation in DHCPv4 socket processing.

- dhclient will now fork() into the background once it binds to an
  IPv6 address, or immediately if the -n flag is supplised.

- -q is now the default behaviour on dhclient, with -d or -v enabling
  non-quiet (stderr logging) mode.

- Fix documentation of the domain-search atom (quoted, with commas).

- Document DHCPv6 options presently in the default table.

- Replaced ./configure shellscripting with GNU Autoconf.

                     Changes since 3.1.0 (NEW FEATURES)

- DHCPv6 Client and Server protocol support.  Use '-6' to run the daemons
  as v6-only.  Use '-4' to run the daemons as v4-only (default.  There is
  no support currently for both.

- Server support for multiple IA_NA options, containing at most one
  IAADDR option.

- Client support for one IA_NA option, containing any number of IAADDR
  options.

- Server support for the DHCPv6 Information-request message.

- Inappropriate unicast DHCPv6 messages sent to the server are now
  discarded, and this has rearchitected the IO system slightly.

- The DHCPv6 server DUID defaults to type 1, is persistently stored in
  the leases database, and can be over-ridden (either completely, or by
  specifying type 1 or type 2).

- The server only uses Rapid-Commit if it has been configured with the
  Rapid-Commit option and the client requests it.

- DDNS support. We now update AAAA records in the same place we would
  update A records, if we have an IPv6 address. We also generate IP6.ARPA
  style names for PTR records if we're dealing with an IPv6 address.  Both
  A and AAAA updates are done using the same 'fqdn.' virtual option space
  (although the DHCPv4 FQDN and DHCPv6 FQDN options are formatted
  differently, they both use the same code here).

- The Linux dhclient-script attempts to set and remove assigned addresses,
  and to configure /etc/resolv.conf from nameserver and domain name
  configurations.  It can be extended to configure other parameters.

- Initial DHCPv6 lease support.

- The IO system now tracks all local IP addresses, so that the DHCP
  applications (particularly the dhcrelay) can discern between what frames
  were transmitted to it, and what frames are being carried through it which
  it should not intercept.

                        Changes since 3.1.0b1

- Fixed a bug that caused OMAPI clients to freeze when opening lease
  objects.

- A new server config option "fqdn-reply" specifies whether the server
  should send out option 81 (FQDN).  Defaults to "on".  If set to "off",
  the FQDN option is not sent, even if the client requested it.  This is
  needed because some clients misbehave otherwise.  Thanks to Christof Chen
  at Allianz.

- Allow trace output files (-tf option) to be overwritten, rather than
  crashing dhcpd if the file already exists

- A bug was fixed that caused dhcpd to segfault if a pool was declared
  outside the scope of a subnet in dhcpd.conf.

- Some uninitialized values were repaired in dhcpleasequery.c that
  caused the server to abort.

- A new server config option, 'do-reverse-updates', has been added
  which causes the server to abstain from performing updates on PTR
  records.  Thanks to a patch from Christof Chen at Allianz.

- A bug was repaired in subencapsulation support, where spaces separated
  by empty spaces would not get included.

                        Changes since 3.1.0a3

- Some spelling fixes.

-- 
David W. Hankins	"If you don't do it right the first time,
Software Engineer		you'll just have to do it again."
Internet Systems Consortium, Inc.	-- Jack T. Hankins
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