3 BIND version 9 is a major rewrite of nearly all aspects of the
4 underlying BIND architecture. Some of the important features of
9 TSIG (signed DNS requests)
12 Answers DNS queries on IPv6 sockets
13 IPv6 resource records (AAAA)
14 Experimental IPv6 Resolver Library
16 - DNS Protocol Enhancements
17 IXFR, DDNS, Notify, EDNS0
18 Improved standards conformance
21 One server process can provide multiple "views" of
22 the DNS namespace, e.g. an "inside" view to certain
23 clients, and an "outside" view to others.
25 - Multiprocessor Support
27 - Improved Portability Architecture
30 BIND version 9 development has been underwritten by the following
33 Sun Microsystems, Inc.
35 Compaq Computer Corporation
37 Process Software Corporation
38 Silicon Graphics, Inc.
39 Network Associates, Inc.
40 U.S. Defense Information Systems Agency
42 Stichting NLnet - NLnet Foundation
45 For a summary of functional enhancements in previous
46 releases, see the HISTORY file.
48 For a detailed list of user-visible changes from
49 previous releases, see the CHANGES file.
51 For up-to-date release notes and errata, see
52 http://www.isc.org/software/bind9/releasenotes
56 BIND 9.9.5 is a maintenance release, and patches the security
57 flaws described in CVE-2013-6320 and CVE-2014-0591. It also
58 includes the following functional enhancements:
60 - "named" now preserves the capitalization of names when
61 responding to queries.
62 - new "dnssec-importkey" command allows the use of offline
63 DNSSEC keys with automatic DNSKEY management.
64 - When re-signing a zone, the new "dnssec-signzone -Q" option
65 drops signatures from keys that are still published but are
67 - "named-checkconf -px" will print the contents of configuration
68 files with the shared secrets obscured, making it easier to
69 share configuration (e.g. when submitting a bug report)
70 without revealing private information.
74 BIND 9.9.4 is a maintenance release, and patches the security
75 flaws described in CVE-2013-3919 and CVE-2013-4854. It also
76 introduces DNS Response Rate Limiting (DNS RRL) as a
77 compile-time option. To use this feature, configure with
78 the "--enable-rrl" option.
82 BIND 9.9.3 is a maintenance release and patches the security
83 flaws described in CVE-2012-5688, CVE-2012-5689 and CVE-2013-2266.
87 BIND 9.9.2 is a maintenance release and patches the security
88 flaw described in CVE-2012-4244.
92 BIND 9.9.1 is a maintenance release.
96 BIND 9.9.0 includes a number of changes from BIND 9.8 and earlier
97 releases. New features include:
99 - Inline signing, allowing automatic DNSSEC signing of
100 master zones without modification of the zonefile, or
101 "bump in the wire" signing in slaves.
102 - NXDOMAIN redirection.
103 - New 'rndc flushtree' command clears all data under a given
104 name from the DNS cache.
105 - New 'rndc sync' command dumps pending changes in a dynamic
106 zone to disk without a freeze/thaw cycle.
107 - New 'rndc signing' command displays or clears signing status
108 records in 'auto-dnssec' zones.
109 - NSEC3 parameters for 'auto-dnssec' zones can now be set prior
110 to signing, eliminating the need to initially sign with NSEC.
111 - Startup time improvements on large authoritative servers.
112 - Slave zones are now saved in raw format by default.
113 - Several improvements to response policy zones (RPZ).
114 - Improved hardware scalability by using multiple threads
115 to listen for queries and using finer-grained client locking
116 - The 'also-notify' option now takes the same syntax as
117 'masters', so it can used named masterlists and TSIG keys.
118 - 'dnssec-signzone -D' writes an output file containing only DNSSEC
119 data, which can be included by the primary zone file.
120 - 'dnssec-signzone -R' forces removal of signatures that are
121 not expired but were created by a key which no longer exists.
122 - 'dnssec-signzone -X' allows a separate expiration date to
123 be specified for DNSKEY signatures from other signatures.
124 - New '-L' option to dnssec-keygen, dnssec-settime, and
125 dnssec-keyfromlabel sets the default TTL for the key.
126 - dnssec-dsfromkey now supports reading from standard input,
127 to make it easier to convert DNSKEY to DS.
128 - RFC 1918 reverse zones have been added to the empty-zones
130 - Dynamic updates can now optionally set the zone's SOA serial
131 number to the current UNIX time.
132 - DLZ modules can now retrieve the source IP address of
134 - 'request-ixfr' option can now be set at the per-zone level.
135 - 'dig +rrcomments' turns on comments about DNSKEY records,
136 indicating their key ID, algorithm and function
137 - Simplified nsupdate syntax and added readline support
141 BIND 9 currently requires a UNIX system with an ANSI C compiler,
142 basic POSIX support, and a 64 bit integer type.
144 We've had successful builds and tests on the following systems:
146 COMPAQ Tru64 UNIX 5.1B
148 FreeBSD 4.10, 5.2.1, 6.2
151 NetBSD 3.x, 4.0-beta, 5.0-beta
153 Solaris 8, 9, 9 (x86), 10
157 NOTE: As of BIND 9.5.1, 9.4.3, and 9.3.6, older versions of
158 Windows, including Windows NT and Windows 2000, are no longer
161 We have recent reports from the user community that a supported
162 version of BIND will build and run on the following systems:
171 MacOS X 10.5, 10.6, 10.7
172 Red Hat Enterprise Linux 4, 5, 6
182 Do not use a parallel "make".
184 Several environment variables that can be set before running
185 configure will affect compilation:
188 The C compiler to use. configure tries to figure
189 out the right one for supported systems.
192 C compiler flags. Defaults to include -g and/or -O2
193 as supported by the compiler. Please include '-g'
194 if you need to set CFLAGS.
197 System header file directories. Can be used to specify
198 where add-on thread or IPv6 support is, for example.
199 Defaults to empty string.
202 Any additional preprocessor symbols you want defined.
203 Defaults to empty string.
206 Change the default syslog facility of named/lwresd.
207 -DISC_FACILITY=LOG_LOCAL0
208 Enable DNSSEC signature chasing support in dig.
209 -DDIG_SIGCHASE=1 (sets -DDIG_SIGCHASE_TD=1 and
211 Disable dropping queries from particular well known ports.
212 -DNS_CLIENT_DROPPORT=0
213 Sibling glue checking in named-checkzone is enabled by default.
214 To disable the default check set. -DCHECK_SIBLING=0
215 named-checkzone checks out-of-zone addresses by default.
216 To disable this default set. -DCHECK_LOCAL=0
217 To create the default pid files in ${localstatedir}/run rather
218 than ${localstatedir}/run/{named,lwresd}/ set.
220 Enable workaround for Solaris kernel bug about /dev/poll
221 -DISC_SOCKET_USE_POLLWATCH=1
222 The watch timeout is also configurable, e.g.,
223 -DISC_SOCKET_POLLWATCH_TIMEOUT=20
226 Linker flags. Defaults to empty string.
228 The following need to be set when cross compiling.
231 The native C compiler.
232 BUILD_CFLAGS (optional)
233 BUILD_CPPFLAGS (optional)
235 -DNEED_OPTARG=1 (optarg is not declared in <unistd.h>)
236 BUILD_LDFLAGS (optional)
237 BUILD_LIBS (optional)
239 To build shared libraries, specify "--with-libtool" on the
240 configure command line.
242 For the server to support DNSSEC, you need to build it
243 with crypto support. You must have OpenSSL 0.9.5a
244 or newer installed and specify "--with-openssl" on the
245 configure command line. If OpenSSL is installed under
246 a nonstandard prefix, you can tell configure where to
247 look for it using "--with-openssl=/prefix".
249 On some platforms it is necessary to explictly request large
250 file support to handle files bigger than 2GB. This can be
251 done by "--enable-largefile" on the configure command line.
253 On some platforms, BIND 9 can be built with multithreading
254 support, allowing it to take advantage of multiple CPUs.
255 You can specify whether to build a multithreaded BIND 9
256 by specifying "--enable-threads" or "--disable-threads"
257 on the configure command line. The default is operating
260 Support for the "fixed" rrset-order option can be enabled
261 or disabled by specifying "--enable-fixed-rrset" or
262 "--disable-fixed-rrset" on the configure command line.
263 The default is "disabled", to reduce memory footprint.
265 If your operating system has integrated support for IPv6, it
266 will be used automatically. If you have installed KAME IPv6
267 separately, use "--with-kame[=PATH]" to specify its location.
269 "make install" will install "named" and the various BIND 9 libraries.
270 By default, installation is into /usr/local, but this can be changed
271 with the "--prefix" option when running "configure".
273 You may specify the option "--sysconfdir" to set the directory
274 where configuration files like "named.conf" go by default,
275 and "--localstatedir" to set the default parent directory
276 of "run/named.pid". For backwards compatibility with BIND 8,
277 --sysconfdir defaults to "/etc" and --localstatedir defaults to
278 "/var" if no --prefix option is given. If there is a --prefix
279 option, sysconfdir defaults to "$prefix/etc" and localstatedir
280 defaults to "$prefix/var".
282 To see additional configure options, run "configure --help".
283 Note that the help message does not reflect the BIND 8
284 compatibility defaults for sysconfdir and localstatedir.
286 If you're planning on making changes to the BIND 9 source, you
287 should also "make depend". If you're using Emacs, you might find
290 If you need to re-run configure please run "make distclean" first.
291 This will ensure that all the option changes take.
293 Building with gcc is not supported, unless gcc is the vendor's usual
294 compiler (e.g. the various BSD systems, Linux).
296 Known compiler issues:
297 * gcc-3.2.1 and gcc-3.1.1 is known to cause problems with solaris-x86.
298 * gcc prior to gcc-3.2.3 ultrasparc generates incorrect code at -02.
299 * gcc-3.3.5 powerpc generates incorrect code at -02.
300 * Irix, MipsPRO 7.4.1m is known to cause problems.
302 A limited test suite can be run with "make test". Many of
303 the tests require you to configure a set of virtual IP addresses
304 on your system, and some require Perl; see bin/tests/system/README
307 SunOS 4 requires "printf" to be installed to make the shared
308 libraries. sh-utils-1.16 provides a "printf" which compiles
313 Linux requires kernel build 2.6.39 or later to get the
314 performance benefits from using multiple sockets.
318 The BIND 9 Administrator Reference Manual is included with the
319 source distribution in DocBook XML and HTML format, in the
322 Some of the programs in the BIND 9 distribution have man pages
323 in their directories. In particular, the command line
324 options of "named" are documented in /bin/named/named.8.
325 There is now also a set of man pages for the lwres library.
327 If you are upgrading from BIND 8, please read the migration
328 notes in doc/misc/migration. If you are upgrading from
329 BIND 4, read doc/misc/migration-4to9.
331 Frequently asked questions and their answers can be found in
334 Additional information on various subjects can be found
335 in the other README files.
340 A detailed list of all changes to BIND 9 is included in the
341 file CHANGES, with the most recent changes listed first.
342 Change notes include tags indicating the category of the
343 change that was made; these categories are:
347 [bug] General bug fix
349 [security] Fix for a significant security flaw
351 [experimental] Used for new features when the syntax
352 or other aspects of the design are still
353 in flux and may change
355 [port] Portability enhancement
357 [maint] Updates to built-in data such as root
358 server addresses and keys
360 [tuning] Changes to built-in configuration defaults
361 and constants to improve performanceo
363 [protocol] Updates to the DNS protocol such as new
366 [test] Changes to the automatic tests, not
367 affecting server functionality
369 [cleanup] Minor corrections and refactoring
373 In general, [func] and [experimental] tags will only appear
374 in new-feature releases (i.e., those with version numbers
375 ending in zero). Some new functionality may be backported to
376 older releases on a case-by-case basis. All other change
377 types may be applied to all currently-supported releases.
380 Bug Reports and Mailing Lists
382 Bugs reports should be sent to
386 To join the BIND Users mailing list, send mail to
388 bind-users-request@isc.org
390 archives of which can be found via
392 http://www.isc.org/ops/lists/
394 If you're planning on making changes to the BIND 9 source
395 code, you might want to join the BIND Workers mailing list.
398 bind-workers-request@isc.org