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 9.9.6 is a maintenance release, and also includes
57 the following new functionality.
59 - The former behavior with respect to capitalization of names
60 (prior to BIND 9.9.5) can be restored for specific clients via
61 the new "no-case-compress" ACL.
65 BIND 9.9.5 is a maintenance release, and patches the security
66 flaws described in CVE-2013-6320 and CVE-2014-0591. It also
67 includes the following functional enhancements:
69 - "named" now preserves the capitalization of names when
70 responding to queries.
71 - new "dnssec-importkey" command allows the use of offline
72 DNSSEC keys with automatic DNSKEY management.
73 - When re-signing a zone, the new "dnssec-signzone -Q" option
74 drops signatures from keys that are still published but are
76 - "named-checkconf -px" will print the contents of configuration
77 files with the shared secrets obscured, making it easier to
78 share configuration (e.g. when submitting a bug report)
79 without revealing private information.
83 BIND 9.9.4 is a maintenance release, and patches the security
84 flaws described in CVE-2013-3919 and CVE-2013-4854. It also
85 introduces DNS Response Rate Limiting (DNS RRL) as a
86 compile-time option. To use this feature, configure with
87 the "--enable-rrl" option.
91 BIND 9.9.3 is a maintenance release and patches the security
92 flaws described in CVE-2012-5688, CVE-2012-5689 and CVE-2013-2266.
96 BIND 9.9.2 is a maintenance release and patches the security
97 flaw described in CVE-2012-4244.
101 BIND 9.9.1 is a maintenance release.
105 BIND 9.9.0 includes a number of changes from BIND 9.8 and earlier
106 releases. New features include:
108 - Inline signing, allowing automatic DNSSEC signing of
109 master zones without modification of the zonefile, or
110 "bump in the wire" signing in slaves.
111 - NXDOMAIN redirection.
112 - New 'rndc flushtree' command clears all data under a given
113 name from the DNS cache.
114 - New 'rndc sync' command dumps pending changes in a dynamic
115 zone to disk without a freeze/thaw cycle.
116 - New 'rndc signing' command displays or clears signing status
117 records in 'auto-dnssec' zones.
118 - NSEC3 parameters for 'auto-dnssec' zones can now be set prior
119 to signing, eliminating the need to initially sign with NSEC.
120 - Startup time improvements on large authoritative servers.
121 - Slave zones are now saved in raw format by default.
122 - Several improvements to response policy zones (RPZ).
123 - Improved hardware scalability by using multiple threads
124 to listen for queries and using finer-grained client locking
125 - The 'also-notify' option now takes the same syntax as
126 'masters', so it can used named masterlists and TSIG keys.
127 - 'dnssec-signzone -D' writes an output file containing only DNSSEC
128 data, which can be included by the primary zone file.
129 - 'dnssec-signzone -R' forces removal of signatures that are
130 not expired but were created by a key which no longer exists.
131 - 'dnssec-signzone -X' allows a separate expiration date to
132 be specified for DNSKEY signatures from other signatures.
133 - New '-L' option to dnssec-keygen, dnssec-settime, and
134 dnssec-keyfromlabel sets the default TTL for the key.
135 - dnssec-dsfromkey now supports reading from standard input,
136 to make it easier to convert DNSKEY to DS.
137 - RFC 1918 reverse zones have been added to the empty-zones
139 - Dynamic updates can now optionally set the zone's SOA serial
140 number to the current UNIX time.
141 - DLZ modules can now retrieve the source IP address of
143 - 'request-ixfr' option can now be set at the per-zone level.
144 - 'dig +rrcomments' turns on comments about DNSKEY records,
145 indicating their key ID, algorithm and function
146 - Simplified nsupdate syntax and added readline support
150 BIND 9 currently requires a UNIX system with an ANSI C compiler,
151 basic POSIX support, and a 64 bit integer type.
153 We've had successful builds and tests on the following systems:
155 COMPAQ Tru64 UNIX 5.1B
157 FreeBSD 4.10, 5.2.1, 6.2
160 NetBSD 3.x, 4.0-beta, 5.0-beta
162 Solaris 8, 9, 9 (x86), 10
166 NOTE: As of BIND 9.5.1, 9.4.3, and 9.3.6, older versions of
167 Windows, including Windows NT and Windows 2000, are no longer
170 We have recent reports from the user community that a supported
171 version of BIND will build and run on the following systems:
180 MacOS X 10.5, 10.6, 10.7
181 Red Hat Enterprise Linux 4, 5, 6
191 Do not use a parallel "make".
193 Several environment variables that can be set before running
194 configure will affect compilation:
197 The C compiler to use. configure tries to figure
198 out the right one for supported systems.
201 C compiler flags. Defaults to include -g and/or -O2
202 as supported by the compiler. Please include '-g'
203 if you need to set CFLAGS.
206 System header file directories. Can be used to specify
207 where add-on thread or IPv6 support is, for example.
208 Defaults to empty string.
211 Any additional preprocessor symbols you want defined.
212 Defaults to empty string.
215 Change the default syslog facility of named/lwresd.
216 -DISC_FACILITY=LOG_LOCAL0
217 Enable DNSSEC signature chasing support in dig.
218 -DDIG_SIGCHASE=1 (sets -DDIG_SIGCHASE_TD=1 and
220 Disable dropping queries from particular well known ports.
221 -DNS_CLIENT_DROPPORT=0
222 Sibling glue checking in named-checkzone is enabled by default.
223 To disable the default check set. -DCHECK_SIBLING=0
224 named-checkzone checks out-of-zone addresses by default.
225 To disable this default set. -DCHECK_LOCAL=0
226 To create the default pid files in ${localstatedir}/run rather
227 than ${localstatedir}/run/{named,lwresd}/ set.
229 Enable workaround for Solaris kernel bug about /dev/poll
230 -DISC_SOCKET_USE_POLLWATCH=1
231 The watch timeout is also configurable, e.g.,
232 -DISC_SOCKET_POLLWATCH_TIMEOUT=20
235 Linker flags. Defaults to empty string.
237 The following need to be set when cross compiling.
240 The native C compiler.
241 BUILD_CFLAGS (optional)
242 BUILD_CPPFLAGS (optional)
244 -DNEED_OPTARG=1 (optarg is not declared in <unistd.h>)
245 BUILD_LDFLAGS (optional)
246 BUILD_LIBS (optional)
248 To build shared libraries, specify "--with-libtool" on the
249 configure command line.
251 For the server to support DNSSEC, you need to build it
252 with crypto support. You must have OpenSSL 0.9.5a
253 or newer installed and specify "--with-openssl" on the
254 configure command line. If OpenSSL is installed under
255 a nonstandard prefix, you can tell configure where to
256 look for it using "--with-openssl=/prefix".
258 On some platforms it is necessary to explictly request large
259 file support to handle files bigger than 2GB. This can be
260 done by "--enable-largefile" on the configure command line.
262 On some platforms, BIND 9 can be built with multithreading
263 support, allowing it to take advantage of multiple CPUs.
264 You can specify whether to build a multithreaded BIND 9
265 by specifying "--enable-threads" or "--disable-threads"
266 on the configure command line. The default is operating
269 Support for the "fixed" rrset-order option can be enabled
270 or disabled by specifying "--enable-fixed-rrset" or
271 "--disable-fixed-rrset" on the configure command line.
272 The default is "disabled", to reduce memory footprint.
274 If your operating system has integrated support for IPv6, it
275 will be used automatically. If you have installed KAME IPv6
276 separately, use "--with-kame[=PATH]" to specify its location.
278 "make install" will install "named" and the various BIND 9 libraries.
279 By default, installation is into /usr/local, but this can be changed
280 with the "--prefix" option when running "configure".
282 You may specify the option "--sysconfdir" to set the directory
283 where configuration files like "named.conf" go by default,
284 and "--localstatedir" to set the default parent directory
285 of "run/named.pid". For backwards compatibility with BIND 8,
286 --sysconfdir defaults to "/etc" and --localstatedir defaults to
287 "/var" if no --prefix option is given. If there is a --prefix
288 option, sysconfdir defaults to "$prefix/etc" and localstatedir
289 defaults to "$prefix/var".
291 To see additional configure options, run "configure --help".
292 Note that the help message does not reflect the BIND 8
293 compatibility defaults for sysconfdir and localstatedir.
295 If you're planning on making changes to the BIND 9 source, you
296 should also "make depend". If you're using Emacs, you might find
299 If you need to re-run configure please run "make distclean" first.
300 This will ensure that all the option changes take.
302 Building with gcc is not supported, unless gcc is the vendor's usual
303 compiler (e.g. the various BSD systems, Linux).
305 Known compiler issues:
306 * gcc-3.2.1 and gcc-3.1.1 is known to cause problems with solaris-x86.
307 * gcc prior to gcc-3.2.3 ultrasparc generates incorrect code at -02.
308 * gcc-3.3.5 powerpc generates incorrect code at -02.
309 * Irix, MipsPRO 7.4.1m is known to cause problems.
311 A limited test suite can be run with "make test". Many of
312 the tests require you to configure a set of virtual IP addresses
313 on your system, and some require Perl; see bin/tests/system/README
316 SunOS 4 requires "printf" to be installed to make the shared
317 libraries. sh-utils-1.16 provides a "printf" which compiles
322 Linux requires kernel build 2.6.39 or later to get the
323 performance benefits from using multiple sockets.
327 The BIND 9 Administrator Reference Manual is included with the
328 source distribution in DocBook XML and HTML format, in the
331 Some of the programs in the BIND 9 distribution have man pages
332 in their directories. In particular, the command line
333 options of "named" are documented in /bin/named/named.8.
334 There is now also a set of man pages for the lwres library.
336 If you are upgrading from BIND 8, please read the migration
337 notes in doc/misc/migration. If you are upgrading from
338 BIND 4, read doc/misc/migration-4to9.
340 Frequently asked questions and their answers can be found in
343 Additional information on various subjects can be found
344 in the other README files.
349 A detailed list of all changes to BIND 9 is included in the
350 file CHANGES, with the most recent changes listed first.
351 Change notes include tags indicating the category of the
352 change that was made; these categories are:
356 [bug] General bug fix
358 [security] Fix for a significant security flaw
360 [experimental] Used for new features when the syntax
361 or other aspects of the design are still
362 in flux and may change
364 [port] Portability enhancement
366 [maint] Updates to built-in data such as root
367 server addresses and keys
369 [tuning] Changes to built-in configuration defaults
370 and constants to improve performanceo
372 [protocol] Updates to the DNS protocol such as new
375 [test] Changes to the automatic tests, not
376 affecting server functionality
378 [cleanup] Minor corrections and refactoring
382 [contrib] Changes to the contributed tools and
383 libraries in the 'contrib' subdirectory
385 [placeholder] Used in the master development branch to
386 reserve change numbers for use in other
387 branches, e.g. when fixing a bug that only
388 exists in older releases
390 In general, [func] and [experimental] tags will only appear
391 in new-feature releases (i.e., those with version numbers
392 ending in zero). Some new functionality may be backported to
393 older releases on a case-by-case basis. All other change
394 types may be applied to all currently-supported releases.
397 Bug Reports and Mailing Lists
399 Bug reports should be sent to:
403 Feature requests can be sent to:
407 To join or view the archives of the BIND Users mailing list,
410 https://lists.isc.org/mailman/listinfo/bind-users
412 If you're planning on making changes to the BIND 9 source
413 code, you may also want to join the BIND Workers mailing
416 https://lists.isc.org/mailman/listinfo/bind-workers
418 Information on read-only Git access, coding style and developer
419 guidelines can be found at:
421 http://www.isc.org/git/