Add release note for #1834

diff --git a/doc/arm/notes-9.11.20.xml b/doc/arm/notes-9.11.20.xml
index dea0894d976e60bb0484ca4f5a02802af60dbe40..d20be0c1e512816870004711a7613ea25c0aa5a8 100644 (file)
--- a/doc/arm/notes-9.11.20.xml
+++ b/doc/arm/notes-9.11.20.xml
@@ -47,6 +47,17 @@
 
   <section xml:id="relnotes-9.11.20-bugs"><info><title>Bug Fixes</title></info>
     <itemizedlist>
+      <listitem>
+        <para>
+          When fully updating the NSEC3 chain for a large zone via IXFR, a
+          temporary loss of performance could be experienced on the secondary
+          server when answering queries for nonexistent data that required
+          DNSSEC proof of non-existence (in other words, queries that required
+          the server to find and to return NSEC3 data). The unnecessary
+          processing step that was causing this delay has now been removed.
+          [GL #1834]
+        </para>
+      </listitem>
       <listitem>
         <para>
          Fix a data race in resolver.c:formerr() that could lead to assertion