Add release notes

diff --git a/doc/arm/notes.xml b/doc/arm/notes.xml
index 03653ec363b9408ef4dd6de689c259b5807cc721..9f5ba91667b27d565f3e5bbd6c22994cc2b1f0fa 100644 (file)
--- a/doc/arm/notes.xml
+++ b/doc/arm/notes.xml
@@ -142,6 +142,18 @@
          as a result of a zone update.  [GL #513]
        </para>
       </listitem>
+      <listitem>
+       <para>
+         A SipHash 2-4 based DNS Cookie (RFC 7873) algorithm has been added.
+       </para>
+       <para>
+         If you are running multiple DNS Servers (different versions of BIND 9
+         or DNS server from multiple vendors) responding from the same IP
+         address (anycast or load-balancing scenarios), you'll have to make
+         sure that all the servers are configured with the same DNS Cookie
+         algorithm and same Server Secret for the best performance.
+       </para>
+      </listitem>
     </itemizedlist>
   </section>