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mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-31 14:35:26 +00:00

Prepare release notes for BIND 9.17.9

This commit is contained in:
Michał Kępień
2021-01-08 16:16:51 +01:00
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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 9.17.9
---------------------
Security Fixes
~~~~~~~~~~~~~~
- None.
Known Issues
~~~~~~~~~~~~
- None.
New Features
~~~~~~~~~~~~
- ``ipv4only.arpa`` is now served when DNS64 is configured. [GL #385]
Removed Features
~~~~~~~~~~~~~~~~
- A number of non-working configuration options that had been marked
as obsolete in previous releases have now been removed completely.
Using any of the following options is now considered a configuration
failure:
``acache-cleaning-interval``, ``acache-enable``, ``additional-from-auth``,
``additional-from-cache``, ``allow-v6-synthesis``, ``cleaning-interval``,
``dnssec-enable``, ``dnssec-lookaside``, ``filter-aaaa``,
``filter-aaaa-on-v4``, ``filter-aaaa-on-v6``, ``geoip-use-ecs``, ``lwres``,
``max-acache-size``, ``nosit-udp-size``, ``queryport-pool-ports``,
``queryport-pool-updateinterval``, ``request-sit``, ``sit-secret``,
``support-ixfr``, ``use-queryport-pool``, ``use-ixfr``. [GL #1086]
Feature Changes
~~~~~~~~~~~~~~~
- It is now possible to transition a zone from secure to insecure mode
without making it bogus in the process; changing to ``dnssec-policy
none;`` also causes CDS and CDNSKEY DELETE records to be published, to
signal that the entire DS RRset at the parent must be removed, as
described in RFC 8078. [GL #1750]
- The default value of ``max-stale-ttl`` has been changed from 12 hours to 1
day and the default value of ``stale-answer-ttl`` has been changed from 1
second to 30 seconds, following RFC 8767 recommendations. [GL #2248]
- 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).
``dnssec-signzone`` now prints a warning message, and ``named`` logs a
warning, when such a fallback happens. [GL #2058]
Bug Fixes
~~~~~~~~~
- Multiple threads could attempt to destroy a single RBTDB instance at
the same time, resulting in an unpredictable but low-probability
assertion failure in ``free_rbtdb()``. This has been fixed. [GL #2317]
- ``named`` no longer attempts to assign threads to CPUs outside the CPU
affinity set. Thanks to Ole Bjørn Hessen. [GL #2245]
- When reconfiguring ``named``, removing ``auto-dnssec`` did not turn
off DNSSEC maintenance. This has been fixed. [GL #2341]
- The report of intermittent BIND assertion failures triggered in
``lib/dns/resolver.c:dns_name_issubdomain()`` has now been closed
without further action. Our initial response to this was to add
diagnostic logging instead of terminating ``named``, anticipating that
we would receive further useful troubleshooting input. This workaround
first appeared in BIND releases 9.17.5 and 9.16.7. However, since
those releases were published, there have been no new reports of
assertion failures matching this issue, but also no further diagnostic
input, so we have closed the issue. [GL #2091]
- KASP incorrectly set signature validity to the value of the DNSKEY signature
validity. This is now fixed. [GL #2383]