[v9_10] document dscp option

diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index f659ce8d969437906ade4cb11cac198a897949f3..3a585231fc52ace05c6d0f8fb696f255eb813274 100644 (file)
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -5423,6 +5423,18 @@ 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>