1.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
2..
3.. SPDX-License-Identifier: MPL-2.0
4..
5.. This Source Code Form is subject to the terms of the Mozilla Public
6.. License, v. 2.0.  If a copy of the MPL was not distributed with this
7.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
8..
9.. See the COPYRIGHT file distributed with this work for additional
10.. information regarding copyright ownership.
11
12Notes for BIND 9.18.21
13----------------------
14
15Removed Features
16~~~~~~~~~~~~~~~~
17
18- Support for using AES as the DNS COOKIE algorithm (``cookie-algorithm
19  aes;``) has been deprecated and will be removed in a future release.
20  Please use the current default, SipHash-2-4, instead. :gl:`#4421`
21
22- The :any:`resolver-nonbackoff-tries` and :any:`resolver-retry-interval`
23  statements have been deprecated. Using them now causes a warning to be
24  logged. :gl:`#4405`
25
26Known Issues
27~~~~~~~~~~~~
28
29- There are no new known issues with this release. See :ref:`above
30  <relnotes_known_issues>` for a list of all known issues affecting this
31  BIND 9 branch.
32