diff --git a/docs/SimpleBridge.xml b/docs/SimpleBridge.xml
index 00dde6695..ee75f7086 100644
--- a/docs/SimpleBridge.xml
+++ b/docs/SimpleBridge.xml
@@ -131,5 +131,12 @@ loc            <emphasis role="bold">br0</emphasis>             10.0.1.255     <
         10.0.1.254 — the IP address of the bridge itself.</para>
       </listitem>
     </itemizedlist>
+
+    <para><emphasis role="bold">Note to Shorewall-perl users</emphasis>: You
+    should also specify the <emphasis role="bold">bridge</emphasis>
+    option:<programlisting>#ZONE          INTERFACE       BROADCAST      OPTIONS
+net            eth0            detect         ...
+loc            <emphasis role="bold">br0</emphasis>             10.0.1.255     <emphasis
+          role="bold">routeback,bridge</emphasis>,...</programlisting></para>
   </section>
 </article>
\ No newline at end of file