add /proc/net/if_inet6 reference

FAQ.xml

@@ -17,7 +17,7 @@
  - PERFORMANCE OF THIS SOFTWARE.
 -->
 
-<!-- $Id: FAQ.xml,v 1.32 2008/01/29 23:47:00 tbox Exp $ -->
+<!-- $Id: FAQ.xml,v 1.33 2008/02/24 23:57:06 marka Exp $ -->
 
 <article class="faq">
   <title>Frequently Asked Questions about BIND 9</title>
@@ -1240,6 +1240,31 @@ named_cache_t: for files modifiable by named - $ROOTDIR/var/{tmp,named/{slaves,d
 	</para>
       </answer>
     </qandaentry>
+
+    <qandaentry>
+      <question>
+	<para>
+	  Listening on individual IPv6 interfaces does not work.
+	</para>
+      </question>
+      <answer>
+	<para>
+	  This is usually due to "/proc/net/if_inet6" not being available
+	  in the chroot file system.  Mount another instance of "/proc"
+	  in the chroot file system.
+	</para>
+	<para>
+	  This can be be made permanent by adding a second intance to
+	  /etc/fstab.
+	  <informalexample>
+	    <programlisting>
+proc /proc           proc defaults 0 0
+proc /var/named/proc proc defaults 0 0
+	    </programlisting>
+	  </informalexample>
+	</para>
+      </answer>
+    </qandaentry>
     
     </qandadiv> <!-- Linux -->