diff --git a/Shorewall/manpages/shorewall.conf.xml b/Shorewall/manpages/shorewall.conf.xml
index f683be26d..fefc8a3bf 100644
--- a/Shorewall/manpages/shorewall.conf.xml
+++ b/Shorewall/manpages/shorewall.conf.xml
@@ -2119,6 +2119,11 @@ LOG:info:,bar                        net                    fw</programlisting>
               with an RST.</para>
             </listitem>
 
+            <listitem>
+              <para>if the protocol is UDP (17) then the packet is rejected
+              with an 'port-unreachable' ICMP (ICMP6).</para>
+            </listitem>
+
             <listitem>
               <para>if the protocol is ICMP (1) then the packet is rejected
               with a 'host-unreachable' ICMP.</para>
diff --git a/Shorewall6/manpages/shorewall6.conf.xml b/Shorewall6/manpages/shorewall6.conf.xml
index e4869a5ec..b0002d4c7 100644
--- a/Shorewall6/manpages/shorewall6.conf.xml
+++ b/Shorewall6/manpages/shorewall6.conf.xml
@@ -1875,6 +1875,11 @@ LOG:info:,bar                        net                    fw</programlisting>
               with an RST.</para>
             </listitem>
 
+            <listitem>
+              <para>if the protocol is UDP (17) then the packet is rejected
+              with an 'port-unreachable' ICMP (ICMP6).</para>
+            </listitem>
+
             <listitem>
               <para>if the protocol is ICMP (1) then the packet is rejected
               with a 'addr-unreachable' ICMP.</para>