mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-29 05:28:00 +00:00
106 lines
4.2 KiB
ReStructuredText
106 lines
4.2 KiB
ReStructuredText
..
|
|
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 9.17.16
|
|
----------------------
|
|
|
|
Security Fixes
|
|
~~~~~~~~~~~~~~
|
|
|
|
- Sending non-zero opcode via DoT or DoH channels would trigger an assertion
|
|
failure in ``named``. This has been fixed.
|
|
|
|
ISC would like to thank Ville Heikkila of Synopsys Cybersecurity Research
|
|
Center for responsibly disclosing the vulnerability to us. :gl:`#2787`
|
|
|
|
Known Issues
|
|
~~~~~~~~~~~~
|
|
|
|
- None.
|
|
|
|
New Features
|
|
~~~~~~~~~~~~
|
|
|
|
- Automatic KSK rollover: A new configuration option ``parental-agents`` is
|
|
added to add a list of servers to a zone that can be used for checking DS
|
|
presence. :gl:`#1126`
|
|
|
|
- It is now possible to set a hard quota on the number of concurrent DoH
|
|
connections, and the number of active HTTP/2 streams per connection,
|
|
by using the ``http-listener-clients`` and ``http-streams-per-connection``
|
|
options, or the ``listener-clients`` and ``streams-per-connection``
|
|
parameters to an ``http`` statement. The defaults are 300 and 100
|
|
respectively. :gl:`#2809`
|
|
|
|
Removed Features
|
|
~~~~~~~~~~~~~~~~
|
|
|
|
- Support for compiling and running BIND 9 natively on Windows has been
|
|
completely removed. The last release branch that has working Windows
|
|
support is BIND 9.16. :gl:`#2690`
|
|
|
|
Feature Changes
|
|
~~~~~~~~~~~~~~~
|
|
|
|
- IP fragmentation on outgoing UDP sockets has been disabled. Errors from
|
|
sending DNS messages larger than the specified path MTU are properly handled;
|
|
``named`` now sends back empty DNS messages with the TC (TrunCated) bit set,
|
|
forcing the DNS client to fall back to TCP. :gl:`#2790`
|
|
|
|
- DNS over HTTPS support can be disabled at the compile time via the new
|
|
configuration option ``--disable-doh``. This allows BIND 9 to be
|
|
compiled without libnghttp2 library. :gl:`#2478`
|
|
|
|
- Memory allocation has been substantially refactored, and is now based on
|
|
the memory allocation API provided by the `jemalloc` library on platforms
|
|
where it is available. This library is now recommended for building BIND 9.
|
|
:gl:`#2433`
|
|
|
|
- Previously, named accepted FORMERR responses both with and without
|
|
an OPT record, as an indication that a given server did not support
|
|
EDNS. To implement full compliance with RFC 6891, only FORMERR
|
|
responses without an OPT record are now accepted. This intentionally
|
|
breaks communication with servers that do not support EDNS and
|
|
that incorrectly echo back the query message with the RCODE field
|
|
set to FORMERR and the QR bit set to 1. :gl:`#2249`
|
|
|
|
- CDS and CDNSKEY records may now be published in a zone without the
|
|
requirement that they exactly match an existing DNSKEY record, so long
|
|
the zone is signed with an algorithm represented in the CDS or CDNSKEY
|
|
record. This allows a clean rollover from one DNS provider to another
|
|
when using a multiple-signer DNSSEC configuration. :gl:`#2710`
|
|
|
|
Bug Fixes
|
|
~~~~~~~~~
|
|
|
|
- Fixed a bug that caused the NSEC salt to be changed for KASP zones on
|
|
every startup. :gl:`#2725`
|
|
|
|
- Signed, insecure delegation responses prepared by ``named`` either
|
|
lacked the necessary NSEC records or contained duplicate NSEC records
|
|
when both wildcard expansion and CNAME chaining were required to
|
|
prepare the response. This has been fixed. :gl:`#2759`
|
|
|
|
- A deadlock at startup was introduced when fixing :gl:`#1875` because when
|
|
locking key files for reading and writing, "in-view" logic was not taken into
|
|
account. This has been fixed. :gl:`#2783`
|
|
|
|
- Fix a race condition where two threads are competing for the same set of key
|
|
file locks, that could lead to a deadlock. This has been fixed. :gl:`#2786`
|
|
|
|
- Testing revealed that setting the thread affinity on both the netmgr
|
|
and netthread threads led to inconsistent recursive performance, as
|
|
sometimes the netmgr and netthread threads competed over a single
|
|
resource.
|
|
|
|
When the affinity is not set, tests show a slight dip in the authoritative
|
|
performance of around 5% (ranging from 3.8% to 7.8%), but
|
|
the recursive performance is now consistently improved. :gl:`#2822`
|