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BIND 9

	BIND version 9 is a major rewrite of nearly all aspects of the
	underlying BIND architecture. This re-architecting of BIND was
	necessitated by the expected demands of:

		- Domain name system growth, particularly in very large
		  zones such as .COM
		- Protocol enhancements necessary to securely query and
		  update zones
		- Protocol enhancements necessary to take advantage of
		  certain architectural features of IP version 6

	These demands implied performance requirements that were not
	necessarily easy to attain with the BIND version 8
	architecture.  In particular, BIND must not only be able to
	run on multi-processor multi-threaded systems, but must take
	full advantage of the performance enhancements these
	architectures can provide. In addition, the underlying data
	storage architecture of BIND version 8 does not lend itself to
	implementing alternative back end databases, such as would be
	desirable for the support of multi-gigabyte zones. As such
	zones are easily foreseeable in the relatively near future,
	the data storage architecture needed revision. The feature
	requirements for BIND version 9 included:

		- Scalability
			Thread safety
		        Multi-processor scalability
		        Support for very large zones

		- Security
		        Support for DNSSEC
		        Support for TSIG
		        Auditability (code and operation)
		        Firewall support (split DNS)

		- Portability

		- Maintainability

		- Protocol Enhancements
		        IXFR, DDNS, Notify, EDNS0
		        Improved standards conformance

		- Operational enhancements
		        High availability and reliability
		        Support for alternative back end databases

		- IP version 6 support
		        IPv6 resource records (A6, DNAME, etc.)
		        Bitstring labels
		        APIs

	BIND version 9 development has been underwritten by the following
	organizations:

	        Sun Microsystems, Inc.
	        Hewlett Packard
	        Compaq Computer Corporation
	        IBM
	        Process Software Corporation
	        Silicon Graphics, Inc.
	        Network Associates, Inc.
	        U.S. Defense Information Systems Agency
		USENIX Association
		Stichting NLnet - NLnet Foundation


BIND 9.0.0rc4

	BIND 9.0.0rc4 is a release candidate for the upcoming
	9.0.0 release.  The only changes expected between
	rc4 and the final release are bug fixes and documentation
	updates.

	The 9.0.0 release, and this release candidate, is aimed at
	early adopters and those who wish to make use of new 9.0
	features, such as IPv6 and DNSSEC secure resolution support.

	We are running BIND 9 in production, and it has been used 
	as a root name server.

	The distribution includes a new lightweight resolver library
	and associated resolver daemon.  These should still be considered
	experimental.

	The server-side support for DNSSEC secured zones is stable and
	complete with the exception of the handling of wildcard records.
	The support for secure resolution is still to be considered
	experimental.  For detailed information about the state of the
	DNSSEC implementation, see the file doc/misc/dnssec.

	A small number of bugs found in rc3 have been fixed.  For a detailed
        list of user-visible changes, see the CHANGES file.

	There are a few known bugs:

		The option "query-source * port 53;" will not work as
		expected.  Instead of the wildcard address "*", you need 
		to use an explicit source IP address.

		On some systems, IPv6 and IPv4 sockets interact in
		unexpected ways.  For details, see doc/misc/ipv6.
		To reduce the impact of these problems, the server
		no longer listens for requests on IPv6 addresses
		by default.  If you need to accept DNS queries over
		IPv6, you must specify "listen-on-v6 { any; };"
		in the named.conf options statement.

		There are known problems with thread signal handling 
		under Solaris 2.6.

		The "isc_timer_reset" test sometimes fails on HP-UX 11
		for unknown reasons, but the server itself seems to
		run fine.

		On FreeBSD systems, the server logs error messages
		like "fcntl(8, F_SETFL, 4): Inappropriate ioctl for
		device".  This is due to a bug in the FreeBSD
		/dev/random device.  The bug has been reported
		to the FreeBSD maintainers.  A similar problem is
		reported to exist on OpenBSD.


Building

	BIND 9 currently requires a UNIX system with an ANSI C compiler,
	basic POSIX support, and a good pthreads implementation.

	We've had successful builds and tests on the following systems:

		AIX 4.3
		COMPAQ Tru64 UNIX 4.0D
                COMPAQ Tru64 UNIX 5 (with IPv6 EAK)
		FreeBSD 3.4-STABLE
		HP-UX 11
		IRIX64 6.5
		NetBSD-current (with unproven-pthreads-0.17)
		Red Hat Linux 6.0, 6.1, 6.2
		Solaris 2.6, 7, 8

	To build, just

		./configure
		make

        Several environment variables that can be set before running
        configure will affect compilation:

            CC
                The C compiler to use.  configure tries to figure
                out the right one for supported systems.

            CFLAGS
                C compiler flags.  Defaults to include -g and/or -O2
                as supported by the compiler.

            STD_CINCLUDES
                System header file directories.  Can be used to specify
                where add-on thread or IPv6 support is, for example.
                Defaults to empty string.

            STD_CDEFINES
                Any additional preprocessor symbols you want defined.
                Defaults to empty string.

        To build shared libraries, specify "--with-libtool" on the
	configure command line.

	If your operating system has integrated support for IPv6, it
	will be used automatically.  If you have installed KAME IPv6
	separately, use "--with-kame[=PATH]" to specify its location.
	
        To see additional configure options, run "configure --help".

	"make install" will install "named" and the various BIND 9 libraries.
	By default, installation is into /usr/local, but this can be changed
	with the "--prefix" option when running "configure".

	If you're planning on making changes to the BIND 9 source, you
	should also "make depend".  If you're using Emacs, you might find
	"make tags" helpful.

	Building with gcc is not supported, unless gcc is the vendor's usual
	compiler (e.g. the various BSD systems, Linux).

	Parts of the library can be tested by running "make test" from the
	bin/tests subdirectory.


Documentation

	The BIND 9 Administrator Reference Manual is included with the
	source distribution in HTML and plain text format, in the
	doc/arm directory.  A PDF version can be downloaded separately
	at <http://www.nominum.com/resources/>.

	Some of the programs in the BIND 9 distribution have man pages
	under the doc/man directory.  In particular, the command line
	options of "named" are documented in doc/man/bind/named.8.

	The man pages are currently not installed automatically by
	"make install".

	If you are upgrading from BIND 8, please read the migration
	notes in doc/misc/migration.


Bug Reports and Mailing Lists

	Bugs reports should be sent to

		bind9-bugs@isc.org

	To join the BIND 9 Users mailing list, send mail to

		bind9-users-request@isc.org

	If you're planning on making changes to the BIND 9 source
	code, you might want to join the BIND 9 Workers mailing list.
	Send mail to

		bind9-workers-request@isc.org