diff --git a/Shorewall/manpages/shorewall-providers.xml b/Shorewall/manpages/shorewall-providers.xml
index bf13a2aca..c5da7ebdb 100644
--- a/Shorewall/manpages/shorewall-providers.xml
+++ b/Shorewall/manpages/shorewall-providers.xml
@@ -84,8 +84,8 @@
 
           <para>If PROVIDER_OFFSET is non-zero in <ulink
           url="/manpages/shorewall.conf.html">shorewall.conf(5)</ulink>, then
-          the value must be a multiple of 2^^PROVIDER_OFFSET. In all cases, the
-          number of significant bits may not exceed PROVIDER_OFFSET +
+          the value must be a multiple of 2^^PROVIDER_OFFSET. In all cases,
+          the number of significant bits may not exceed PROVIDER_OFFSET +
           PROVIDER_BITS.</para>
         </listitem>
       </varlistentry>
@@ -117,6 +117,12 @@
           specified unless <option>loose</option> is given in the OPTIONS
           column of this entry.</para>
 
+          <important>
+            <para>For IPv6, if the interface is an Ethernet device and an IP
+            address is supplied, it should be the upstream router's link-level
+            address, not its global address.</para>
+          </important>
+
           <para>Where more than one provider is serviced through a single
           interface, the <emphasis>interface</emphasis> must be followed by a
           colon and the IP <emphasis>address</emphasis> of the interface that