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bind9/doc/notes/notes-current.rst
Mark Andrews b8c44c8e1f Add CHANGES and release notes for [GL #2245]
(cherry picked from commit fc4af548e7)
2020-12-23 09:26:50 +11:00

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Copyright (C) Internet Systems Consortium, Inc. ("ISC")
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, you can obtain one at https://mozilla.org/MPL/2.0/.
See the COPYRIGHT file distributed with this work for additional
information regarding copyright ownership.
Notes for BIND 9.16.11
----------------------
Security Fixes
~~~~~~~~~~~~~~
- None.
Known Issues
~~~~~~~~~~~~
- None.
New Features
~~~~~~~~~~~~
- None.
Removed Features
~~~~~~~~~~~~~~~~
- None.
Feature Changes
~~~~~~~~~~~~~~~
- The new networking code introduced in BIND 9.16 (netmgr) was
overhauled in order to make it more stable, testable, and
maintainable. [GL #2321]
- Earlier releases of BIND versions 9.16 and newer required the
operating system to support load-balanced sockets in order for
``named`` to be able to achieve high performance (by distributing
incoming queries among multiple threads). However, the only operating
systems currently known to support load-balanced sockets are Linux and
FreeBSD 12, which means both UDP and TCP performance were limited to a
single thread on other systems. As of BIND 9.17.8, ``named`` attempts
to distribute incoming queries among multiple threads on systems which
lack support for load-balanced sockets (except Windows). [GL #2137]
- When using the ``unixtime`` or ``date`` method to update the SOA
serial number, ``named`` and ``dnssec-signzone`` silently fell back to
the ``increment`` method to prevent the new serial number from being
smaller than the old serial number (using serial number arithmetics).
``dnsssec-signzone`` now prints a warning message, and ``named`` logs
a warning, when such a fallback happens. [GL #2058]
Bug Fixes
~~~~~~~~~
- Only assign threads to CPUs in the CPU affinity set, so that ``named`` no
longer attempts to run threads on CPUs outside the affinity set. Thanks to
Ole Bjørn Hessen. [GL #2245]