diff --git a/manpages/shorewall-interfaces.xml b/manpages/shorewall-interfaces.xml
index 6a41b70c2..5dfc6cfcc 100644
--- a/manpages/shorewall-interfaces.xml
+++ b/manpages/shorewall-interfaces.xml
@@ -267,8 +267,19 @@ loc     eth2            -</programlisting>
                   </listitem>
 
                   <listitem>
-                    <para>the interface is a bridge with a DHCP server on one
-                    port and DHCP clients on another port.</para>
+                    <para>the interface is a <ulink
+                    url="../SimpleBridge.html">simple bridge</ulink> with a
+                    DHCP server on one port and DHCP clients on another
+                    port.</para>
+
+                    <note>
+                      <para>If you use <ulink
+                      url="../bridge-Shorewall-perl.html">Shorewall-perl for
+                      firewall/bridging</ulink>, then you need to include
+                      DHCP-specific rules in <ulink
+                      url="shorewall-rules.html">shorewall-rules</ulink>(8).
+                      DHCP uses UDP ports 67 and 68.</para>
+                    </note>
                   </listitem>
                 </orderedlist>