diff --git a/docs/netmap.xml b/docs/netmap.xml
index 0eee72f03..fa8deedee 100644
--- a/docs/netmap.xml
+++ b/docs/netmap.xml
@@ -311,5 +311,9 @@ SNAT  192.168.1.0/24 vpn              10.10.10.0/24        #RULE 2B</programlist
     /etc/shorewall/netmap and <ulink url="MultiISP.html">multiple
     providers</ulink>. If you try it and get it working, please contribute an
     update to this article.</para>
+
+    <para>See the<ulink url="OPENVPN.html"> OpenVPN documentation</ulink> for
+    a solution contributed by Nicola Moretti for resolving duplicate networks
+    in a roadwarrior VPN environment.</para>
   </section>
 </article>