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.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
..
.. SPDX-License-Identifier: MPL-2.0
..
.. 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 9.16.1
---------------------
Known Issues
~~~~~~~~~~~~
- UDP network ports used for listening can no longer simultaneously be
used for sending traffic. An example configuration which triggers
this issue would be one which uses the same address:port pair for
``listen-on(-v6)`` statements as for ``notify-source(-v6)`` or
``transfer-source(-v6)``. While this issue affects all operating
systems, it only triggers log messages (e.g. "unable to create
dispatch for reserved port") on some of them. There are currently no
plans to make such a combination of settings work again.
- See :ref:`above <relnotes_known_issues>` for a list of all known
issues affecting this BIND 9 branch.
Feature Changes
~~~~~~~~~~~~~~~
- The system-provided POSIX Threads read-write lock implementation is
now used by default instead of the native BIND 9 implementation.
Please be aware that glibc versions 2.26 through 2.29 had a
`bug <https://sourceware.org/bugzilla/show_bug.cgi?id=23844>`__ that
could cause BIND 9 to deadlock. A fix was released in glibc 2.30, and
most current Linux distributions have patched or updated glibc, with
the notable exception of Ubuntu 18.04 (Bionic) which is a work in
progress. If you are running on an affected operating system, compile
BIND 9 with ``--disable-pthread-rwlock`` until a fixed version of
glibc is available. :gl:`!3125`
Bug Fixes
~~~~~~~~~
- Fixed re-signing issues with inline zones which resulted in records
being re-signed late or not at all.
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