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From: Tom Rhodes <trhodes@FreeBSD.org>
Date: Wed, 5 Jun 2013 02:33:36 +0000 (UTC)
To: doc-committers@freebsd.org, svn-doc-projects@freebsd.org
Subject: svn commit: r41841 -
 projects/ISBN_1-57176-407-0/en_US.ISO8859-1/books/handbook/advanced-networking
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Author: trhodes
Date: Wed Jun  5 02:33:36 2013
New Revision: 41841
URL: http://svnweb.freebsd.org/changeset/doc/41841

Log:
  Wording tweaks to the ipv6/ipv4 mapping section.
  
  Suggested by:	hrs

Modified:
  projects/ISBN_1-57176-407-0/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml

Modified: projects/ISBN_1-57176-407-0/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml
==============================================================================
--- projects/ISBN_1-57176-407-0/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml	Tue Jun  4 22:29:55 2013	(r41840)
+++ projects/ISBN_1-57176-407-0/en_US.ISO8859-1/books/handbook/advanced-networking/chapter.xml	Wed Jun  5 02:33:36 2013	(r41841)
@@ -5453,14 +5453,19 @@ redirect_port tcp 192.168.0.3:80 80</pro
 	may be a security issue.</para>
 
       <para>This option may not be required in most cases and is
-	available only for compatibility while services are updated
-	to support <acronym>IPv6</acronym>.  To enable the feature,
+	available only for compatibility.  This option will allow
+	<acronym>IPv6</acronym>-only applications to work with
+	<acronym>IPv4</acronym> in a dual stack environment.  This
+	is most useful for third party applications which may not
+	support an <acronym>IPv6</acronym>-only environment.  To
+	enable this feature,
 	add the following to <filename>/etc/rc.conf</filename>:</para>
 
       <programlisting>ipv6_ipv4mapping="YES"</programlisting>
 
       <para>Reviewing the information in <acronym>RFC</acronym> 3493,
-	section 3.6 and 3.7 may be useful to some adminstrators.</para>
+	section 3.6 and 3.7 as well as <acronym>RFC</acronym> 4038
+	section 4.2 may be useful to some adminstrators.</para>
     </sect2>
   </sect1>