Generate release notes

doc/notes/notes-9.18.31.rst

@@ -0,0 +1,88 @@
+.. 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.
+
+(-dev)
+------
+
+New Features
+~~~~~~~~~~~~
+
+- Added WALLET type.
+
+  Add the new record type WALLET (262).  This provides a mapping from a
+  domain name to a cryptographic currency wallet.  Multiple mappings can
+  exist if multiple records exist. :gl:`#4947`
+
+Feature Changes
+~~~~~~~~~~~~~~~
+
+- Allow IXFR-to-AXFR fallback on DNS_R_TOOMANYRECORDS.
+
+  This change allows fallback from an IXFR failure to AXFR when the
+  reason is `DNS_R_TOOMANYRECORDS`. This is because this error condition
+  could be temporary only in an intermediate version of IXFR
+  transactions and it's possible that the latest version of the zone
+  doesn't have that condition. In such a case, the secondary would never
+  be able to update the zone (even if it could) without this fallback.
+
+  This fallback behavior is particularly useful with the recently
+  introduced `max-records-per-type` and `max-types-per-name` options:
+  the primary may not have these limitations and may temporarily
+  introduce "too many" records, breaking IXFR. If the primary side
+  subsequently deletes these records, this fallback will help recover
+  the zone transfer failure automatically; without it, the secondary
+  side would first need to increase the limit, which requires more
+  operational overhead and has its own adverse effect. :gl:`#4928`
+
+Bug Fixes
+~~~~~~~~~
+
+- Fix a statistics channel counter bug when 'forward only' zones are
+  used.
+
+  When resolving a zone with a 'forward only' policy, and finding out
+  that all the forwarders are marked as "bad", the 'ServerQuota' counter
+  of the statistics channel was incorrectly increased. This has been
+  fixed. :gl:`#1793`
+
+- Fix a bug in the static-stub implementation.
+
+  Static-stub addresses and addresses from other sources were being
+  mixed together, resulting in static-stub queries going to addresses
+  not specified in the configuration, or alternatively, static-stub
+  addresses being used instead of the correct server addresses.
+  :gl:`#4850`
+
+- Don't allow statistics-channel if libxml2 and libjson-c are
+  unsupported.
+
+  When the libxml2 and libjson-c libraries are not supported, the
+  statistics channel can't return anything useful, so it is now
+  disabled. Use of `statistics-channel` in `named.conf` is a fatal
+  error. :gl:`#4895`
+
+- Limit the outgoing UDP send queue size.
+
+  If the operating system UDP queue gets full and the outgoing UDP
+  sending starts to be delayed, BIND 9 could exhibit memory spikes as it
+  tries to enqueue all the outgoing UDP messages.  Try a bit harder to
+  deliver the outgoing UDP messages synchronously and if that fails,
+  drop the outgoing DNS message that would get queued up and then
+  timeout on the client side. :gl:`#4930`
+
+- Do not set SO_INCOMING_CPU.
+
+  We currently set SO_INCOMING_CPU incorrectly, and testing by Ondrej
+  shows that fixing the issue by setting affinities is worse than
+  letting the kernel schedule threads without constraints. So we should
+  not set SO_INCOMING_CPU anymore. :gl:`#4936`
+
+