bind9/doc/notes/notes-9.17.3.rst

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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 9.17.3
---------------------
New Features
~~~~~~~~~~~~
- New ``rndc`` command ``rndc dnssec -status`` shows the current DNSSEC
policy and keys in use, the key states, and rollover status.
[GL #1612]
- Added support in the network manager for initiating outgoing TCP
connections. [GL #1958]
Feature Changes
~~~~~~~~~~~~~~~
- Disable and disallow static linking of BIND 9 binaries and libraries
as BIND 9 modules require ``dlopen()`` support and static linking also
prevents using security features like read-only relocations (RELRO) or
address space layout randomization (ASLR) which are important for
programs that interact with the network and process arbitrary user
input. [GL #1933]
- As part of an ongoing effort to use RFC 8499 terminology,
``primaries`` can now be used as a synonym for ``masters`` in
``named.conf``. Similarly, ``notify primary-only`` can now be used as
a synonym for ``notify master-only``. The output of ``rndc
zonestatus`` now uses ``primary`` and ``secondary`` terminology.
[GL #1948]
Bug Fixes
~~~~~~~~~
- A race condition could occur if a TCP socket connection was closed
while ``named`` was waiting for a recursive response. The attempt to
send a response over the closing connection triggered an assertion
failure in the function ``isc__nm_tcpdns_send()``. [GL #1937]
- A race condition could occur when ``named`` attempted to use a UDP
interface that was shutting down. This triggered an assertion failure
in ``uv__udp_finish_close()``. [GL #1938]
- Fix assertion failure when server was under load and root zone had not
yet been loaded. [GL #1862]
- ``named`` could crash when cleaning dead nodes in ``lib/dns/rbtdb.c``
that were being reused. [GL #1968]
- ``named`` crashed on shutdown when a new ``rndc`` connection was
received during shutdown. This has been fixed. [GL #1747]
- The DS RRset returned by ``dns_keynode_dsset()`` was used in a
non-thread-safe manner. This could result in an INSIST being
triggered. [GL #1926]
- The ``primary`` and ``secondary`` keywords, when used as parameters
for ``check-names``, were not processed correctly and were being
ignored. [GL #1949]
- ``rndc dnstap -roll <value>`` did not limit the number of saved files
to ``<value>``. [GL !3728]
- The validator could fail to accept a properly signed RRset if an
unsupported algorithm appeared earlier in the DNSKEY RRset than a
supported algorithm. It could also stop if it detected a malformed
public key. [GL #1689]
- The ``blackhole`` ACL was inadvertently disabled for client queries.
Blocked IP addresses were not used for upstream queries but queries
from those addresses could still be answered. [GL #1936]