qname minimization: ARM entry

diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index 8f2bfca31b1fb9b4f54b7c884dd9506acfe8ef9b..e2a6e7f06b112d8b2ace225aeadded5e324c34ff 100644 (file)
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -4665,6 +4665,26 @@ badresp:1,adberr:0,findfail:0,valfail:0]
            </listitem>
          </varlistentry>
 
+         <varlistentry>
+           <term><command>qname-minimization</command></term>
+           <listitem>
+             <para>
+               This option controls QNAME minimization behaviour
+               in the BIND resolver. When set to <command>strict</command>,
+               BIND will follow the QNAME minimization algorithm to
+               the letter, as specified in RFC 7816. Setting this
+               option to <command>relaxed</command> will cause BIND
+               to fall back to normal (non-minimized) query mode
+               when it receives either NXDOMAIN or other unexpected
+               responses (e.g. SERVFAIL, improper zone cut, REFUSED)
+               to a minimized query. <command>disabled</command> disables
+               QNAME minimization completely. The current default is
+               <command>relaxed</command>, but it might be changed to
+               <command>strict</command> in a future release.
+             </para>
+           </listitem>
+         </varlistentry>
+
          <varlistentry>
            <term><command>tkey-gssapi-keytab</command></term>
            <listitem>