Virgin import of ISC-DHCP v2.0b1pl6

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+		     Internet Software Consortium
+	   Dynamic Host Configuration Protocol Distribution
+		   Version 2, Beta 1, Patchlevel 6
+			    June 26, 1998
+
+			    Release Notes
+
+This is the first Beta release of Version 2 of the Internet Software
+Consortium DHCP Distribution.   This beta is believed to be fairly
+stable.
+
+				PLANS
+
+Version 1 of the ISC DHCP Distribution includes just a DHCP Server.
+Version 1 has been in feature freeze since late 1996, and is quite
+stable.  This is the release that we would expect most sites to run in
+production.
+
+Version 2 of the ISC DHCP Distribution adds a DHCP Client and a
+DHCP/BOOTP Relay Agent to the DHCP Server that was offered in version
+1.0.   In addition, some new capabilities have been added to the
+server:
+
+	- IP addresses are now tested before they are assigned to
+	  clients.   This allows the DHCP server to detect rogue
+	  machines that may have hijacked IP addresses before an IP
+	  address conflict can occur.
+
+	- The server may be configured so that some DHCP clients can
+	  be excluded from booting.
+
+	- Improved NAKing behaviour, so that clients that are using
+	  addresses other than the one the server knows they should be
+	  using are disciplined quickly.
+
+This version is now in Beta testing, and is planned for release in
+mid-1998.  It has a number of new features, and is the release that we
+would expect sites that want some stability but need the new lease
+testing feature, or need a client or relay agent.   Note that it is
+possible to run the Version 1 server with the Version 2 client.
+
+Version 3 of the ISC DHCP Distribution will add Dynamic DNS Support,
+asynchronous DNS query resolution, DHCP Authentication, and possibly
+support for a DHCP Interserver Protocol and live querying of the DHCP
+database.   This release is not expected to be stable in the near
+future, and is intended for sites that are in a position to
+experiment, or for sites that desperately need the new features.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 5
+
+- Define some extra DLPI support flags that make DLPI work much better
+  on Solaris.
+
+- Fix inet_aton prototype/declaration to match Internet Software
+  Consortium BIND distribution.
+
+- Document new server-identifier functionality.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 4
+
+- Do not use -Wstrict-prototypes on Solaris with gcc - if the Internet
+  Software Consortium BIND distribution is not installed, this produces
+  errors.
+
+- Actually use the new DLPI support on Solaris - although the code was
+  added in Patchlevel 2, it wasn't enabled (blush).
+
+- Fix a prototype bug that's exposed when DLPI support is enabled on
+  Solaris.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 3
+
+- Fix a makefile botch that prevents the DHCP Distribution from
+  from compiling on Solaris with gcc.   Sigh.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 2
+
+- Allow server-identifier in any scope.   Use in-scope server
+  identifier option rather than the default, if one exists.
+
+- Delete newlines from abandoned lease reclaimation warning.
+
+- Only release other applicable leases held by a client when the
+  client sends a DHCPREQUEST.
+
+- Fix core dump when find_lease didn't find a lease.
+
+- Update dhcpd.leases man page.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 1
+
+- Use -Wno-char-subscript on Solaris to prevent bogus warnings from
+  gcc on Solaris 2.6.
+
+- Add support for Apple's new Rhapsody operating system.
+
+- Use DLPI on Solaris instead of using the BSD Sockets API.
+
+- Fix two network input buffer overflow problems which could allow an
+  attacker to pervert the stack.
+
+- Fix an ancient typo that could theoretically cause memory
+  corruption.
+
+- Sort abandoned leases in at current time rather than end of time.
+  This allows abandoned leases to be reclaimed if there are no
+  available free leases.
+
+- If a client explicitly requests a lease that's been abandoned, it's
+  probably the system that was answering pings on that address, so let it
+  have the lease.
+
+- Fix a bunch of type conversion errors that are flagged by the Solaris
+  C compiler.
+
+	      CHANGES FROM VERSION 2.0 BETA 1 PATCHLEVEL 0
+
+- Fix two potential buffer overflow problems.
+
+- Differentiate between versions of Linux for better success in
+  compiling.
+
+- Fix bug in linux client script regarding routing setup.
+
+- Clarify socket API error message on multiple interfaces.
+
+- Fix broken comparison that was setting IP source address to zero.
+
+- Reclaim abandoned leases if we run out of free leases.
+
+	      CHANGES FROM THE DECEMBER 2, 1997 SNAPSHOT
+
+- Use %ld to print pid_t and cast pid_t values to long to avoid
+  inconsistent declarations between different POSIX flavours.
+
+- Add support for ARPHRD_IEEE802 (token ring) hardware type.
+
+- If we own an address and a client requests it, but we can't assign
+  it to that client, we now NAK it so that the client doesn't try to
+  reuse it.
+
+		    CHANGES FROM THE JUNE SNAPSHOT
+
+- Support for NeXTstep 3.x and 4.x
+
+- Added man pages for dhcpd.leases, dhclient-script, dhclient.leases
+  and dhclient.conf.   Move general documentation of DHCP options into
+  a seperate man page which is referred to by the dhclient.conf and
+  dhcpd.conf man pages.
+
+- Updated README to answer some frequently asked questions.
+
+- Fixed a bug in command-line interface specification in dhclient - it
+  was formerly not possible to specify that only certain interfaces be
+  configured.
+
+- Do not leave client scripts lying around in /tmp after they've been
+  used unless the -D flag is specified.
+
+- Add a new, non-standard, not-guaranteed-to-stay-the-same system
+  configuration status message server which can be used to trigger the
+  client to recheck its address, e.g., after a laptop has been put to
+  sleep and then awakened (this has yet to be documented).
+
+- Fix handling of media selection in the REBOOT phase - previously the
+  media type would not be remembered, which could cause severe delays
+  in reacquiring an address if the default media type was wrong.
+
+- Allocate space for a NUL terminator on the end of client options -
+  this was previously overlooked, and could cause garbage characters
+  to be written to the temporary client script files.
+
+- Use mkstemp if it's available.
+
+- Supply network number and broadcast address to the client script so
+  that on systems that need these values, they don't need to be
+  computed with an awk script.
+
+- Keep a PID file for the client and the relay agent, and have the
+  relay agent background itself by default.
+
+- Add client script for bsd/os, fix many niggling bugs in existing
+  client scripts and add support for static routing tables to all bsd
+  scripts.
+
+- Add a -q option to the client, server and relay agent so that they
+  can be started from /etc/rc scripts without spewing a bunch of
+  garbage on the console.   By default, all three daemons still print
+  startup messages, since these are helpful in bug reporting.
+
+- Don't print anything to stderr or stdout after going into
+  background.
+
+- Fix bug where hostname keyword was not being recognized in
+  dhcpd.leases file, resulting in the loss of lease database entries.
+
+- Fix problem on some operating systems where zero-length ifreq
+  structures were being offset incorrectly when scanning the interface
+  list on startup.
+
+- Unless a BOOTP client requests it, never send more than 64 bytes of
+  options.
+
+- Don't ping static leases, since we don't have a lease structure on
+  the heap to work with later.
+
+- Fixed a compile problem on Solaris 2.6.
+
+- Support interface aliases on Solaris.
+
+- Print day and month with leading zero in lease files if less than
+  ten, for easier parsing by perl/sed/awk scripts.
+
+- Never make the lease database world writable, even if dhcpd is
+  invoked with a bogus umask.
+
+- Fix DHCPRELEASE handling (before, addressed would never be
+  released.)
+
+- If there is more than one lease for a particular client on a
+  particular network, find the lease the client is asking for so as to
+  avoid a cycle of NAKs.
+
+- If a BOOTP request is received from a particular client and that
+  client has previously received a DHCP address, make sure that we
+  still find a valid BOOTP lease so that we don't cycle through
+  addresses.
+
+- Remove server-identifier option from documentation, other than to
+  document that it has been deprecated.
+
+- Don't give up if we get an EINTR or EAGAIN while polling or
+  selecting - these return statuses can occur spuriously without
+  indicating a fatal problem.
+
+- Do not select for exceptions, since we don't handle them.   This was
+  causing massive CPU consumption on some systems.
+
+- When a DHCP client has been assigned a fixed address but had
+  previously had a lease, it will request the old leased address.   In
+  such an event, send a DHCPNAK so that it will discover its new
+  static binding.