1.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
2..
3.. SPDX-License-Identifier: MPL-2.0
4..
5.. This Source Code Form is subject to the terms of the Mozilla Public
6.. License, v. 2.0.  If a copy of the MPL was not distributed with this
7.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
8..
9.. See the COPYRIGHT file distributed with this work for additional
10.. information regarding copyright ownership.
11
12.. _supported_os:
13
14Supported Platforms
15-------------------
16
17Current support status of various platforms and BIND 9 versions can be
18found in the ISC Knowledgebase:
19
20https://kb.isc.org/docs/supported-platforms
21
22In general, this version of BIND will build and run on any
23POSIX-compliant system with a C11-compliant C compiler, BSD-style
24sockets with RFC-compliant IPv6 support, POSIX-compliant threads, and
25the :ref:`required libraries <build_dependencies>`.
26
27The following C11 features are used in BIND 9:
28
29-  Atomic operations support from the compiler is needed, either in the
30   form of builtin operations, C11 atomics, or the ``Interlocked``
31   family of functions on Windows.
32
33-  Thread Local Storage support from the compiler is needed, either in
34   the form of C11 ``_Thread_local``/``thread_local``, the ``__thread``
35   GCC extension, or the ``__declspec(thread)`` MSVC extension on
36   Windows.
37
38ISC regularly tests BIND on many operating systems and architectures,
39but lacks the resources to test all of them. Consequently, ISC is only
40able to offer support on a “best effort” basis for some.
41
42Regularly tested platforms
43~~~~~~~~~~~~~~~~~~~~~~~~~~
44
45As of Dec 2021, BIND 9.16 is fully supported and regularly tested on the
46following systems:
47
48-  Debian 9, 10, 11
49-  Ubuntu LTS 18.04, 20.04
50-  Fedora 35
51-  Red Hat Enterprise Linux / CentOS / Oracle Linux 7, 8
52-  FreeBSD 12.3, 13.0
53-  OpenBSD 7.0
54-  Alpine Linux 3.15
55
56The amd64, i386, armhf and arm64 CPU architectures are all fully
57supported.
58
59Best effort
60~~~~~~~~~~~
61
62The following are platforms on which BIND is known to build and run. ISC
63makes every effort to fix bugs on these platforms, but may be unable to
64do so quickly due to lack of hardware, less familiarity on the part of
65engineering staff, and other constraints. With the exception of Windows
66Server 2016, none of these are tested regularly by ISC.
67
68-  Windows Server 2012 R2, 2016 / x64
69-  Windows 10 / x64
70-  macOS 10.12+
71-  Solaris 11
72-  NetBSD
73-  Other Linux distributions still supported by their vendors, such as:
74
75   -  Ubuntu 20.10+
76   -  Gentoo
77   -  Arch Linux
78
79-  OpenWRT/LEDE 17.01+
80-  Other CPU architectures (mips, mipsel, sparc, …)
81
82Community maintained
83~~~~~~~~~~~~~~~~~~~~
84
85These systems may not all have the required dependencies for building
86BIND easily available, although it will be possible in many cases to
87compile those directly from source. The community and interested parties
88may wish to help with maintenance, and we welcome patch contributions,
89although we cannot guarantee that we will accept them. All contributions
90will be assessed against the risk of adverse effect on officially
91supported platforms.
92
93-  Platforms past or close to their respective EOL dates, such as:
94
95   -  Ubuntu 14.04, 16.04 (Ubuntu ESM releases are not supported)
96   -  CentOS 6
97   -  Debian Jessie
98   -  FreeBSD 10.x, 11.x
99
100Unsupported Platforms
101---------------------
102
103These are platforms on which BIND 9.16 is known *not* to build or run:
104
105-  Platforms without at least OpenSSL 1.0.2
106-  Windows 10 / x86
107-  Windows Server 2012 and older
108-  Solaris 10 and older
109-  Platforms that don’t support IPv6 Advanced Socket API (RFC 3542)
110-  Platforms that don’t support atomic operations (via compiler or
111   library)
112-  Linux without NPTL (Native POSIX Thread Library)
113-  Platforms on which ``libuv`` cannot be compiled
114