[master] document dscp option

diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index 20a796d0eb5a7f179b56ddb50e7064b6ca113c39..53c504f4d6b08368c805acf426b121c19e954485 100644 (file)
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -5457,6 +5457,18 @@ badresp:1,adberr:0,findfail:0,valfail:0]
            </listitem>
          </varlistentry>
 
+         <varlistentry>
+           <term><command>dscp</command></term>
+           <listitem>
+             <para>
+               The global Differentiated Services Code Point (DSCP)
+               value to classify outgoing DNS traffic on operating
+               systems that support DSCP. Valid values are 0 through 63.
+               It is not configured by default.
+             </para>
+           </listitem>
+         </varlistentry>
+
          <varlistentry>
            <term><command>random-device</command></term>
            <listitem>