diff --git a/Shorewall/releasenotes.txt b/Shorewall/releasenotes.txt
index 39b1e0a6d..cca880cee 100644
--- a/Shorewall/releasenotes.txt
+++ b/Shorewall/releasenotes.txt
@@ -153,6 +153,18 @@ Shorewall 4.4.1
 
 10) The name 'any' is now reserved and may not be used as a zone name.
 
+11) Perl module initialization has changed in Shorewall
+    4.4.1. Previously, each Shorewall Perl package would initialize its
+    global variables for IPv4 in an INIT block. Then, if the
+    compilation turned out to be for IPv6,
+    Shorewall::Compiler::compiler() would reinitialize them for IPv6.
+
+    Beginning in Shorewall 4.4.1, the modules do not initialize
+    themselves in an INIT block. So if you use Shorewall modules
+    outside of the Shorewall compilation environment, then you must
+    explicitly call the module's 'initialize' function after the module
+    has been loaded.
+
 ----------------------------------------------------------------------------
           P R O B L E M S   C O R R E C T E D   I N   4 . 4 . 1
 ----------------------------------------------------------------------------
diff --git a/docs/shorewall_prerequisites.xml b/docs/shorewall_prerequisites.xml
index 7149a2e0b..ef76ed70a 100644
--- a/docs/shorewall_prerequisites.xml
+++ b/docs/shorewall_prerequisites.xml
@@ -59,7 +59,11 @@
         <para>Iproute (<quote>ip</quote> and "tc" utilities). The iproute
         package is included with most distributions but may not be installed
         by default. The official download site is <ulink type="remote"
-        url="http://developer.osdl.org/dev/iproute2/download/">http://developer.osdl.org/dev/iproute2/download/</ulink>.</para>
+        url="http://developer.osdl.org/dev/iproute2/download/">http://developer.osdl.org/dev/iproute2/download/</ulink>.
+        Note that the Busybox versions of the iproute2 utilities
+        (<firstterm>ip</firstterm> and <firstterm>tc</firstterm>) do not
+        support all of the features required for advanced Shorewall
+        use.</para>
       </listitem>
 
       <listitem>
@@ -97,9 +101,9 @@
 
         <itemizedlist>
           <listitem>
-            <para> If you want to be able to use DNS names in your Shorewall6
+            <para>If you want to be able to use DNS names in your Shorewall6
             configuration files, then Perl 5.10 is required together with the
-            Perl Socket6 module. </para>
+            Perl Socket6 module.</para>
           </listitem>
 
           <listitem>