+5966. [func] You can now specify if a server must return a DNS
+ COOKIE before accepting the response over UDP.
+ [GL #2295]
+
+ server <prefix> { require-cookie <yes_or_no>; };
+
5965. [cleanup] Move the duplicated ASCII case conversion tables to
isc_ascii where they can be shared, and replace the
various hot-path tolower() loops with calls to new
- None.
+- A new configuration option ``require-cookie`` has been introduced, it
+ specifies if there should be a DNS COOKIE in the response for a given
+ prefix and if not named falls back to TCP. This is useful if you know
+ a given server support DNS COOKIE. It can also be used to force all
+ non DNS COOKIE responses to fall back to TCP. :gl:`#2295`
+
Removed Features
~~~~~~~~~~~~~~~~