2700. [doc] The match-mapped-addresses option is discouraged.

			[RT #12252]

CHANGES

+2700.	[doc]		The match-mapped-addresses option is discouraged.
+			[RT #12252]
+
 2699.	[bug]		Missing lock in rbtdb.c. [RT #20037]
 
 2698.	[placeholder]

doc/arm/Bv9ARM-book.xml

@@ -18,7 +18,7 @@
  - PERFORMANCE OF THIS SOFTWARE.
 -->
 
-<!-- File: $Id: Bv9ARM-book.xml,v 1.428 2009/09/02 21:24:24 jreed Exp $ -->
+<!-- File: $Id: Bv9ARM-book.xml,v 1.429 2009/10/03 23:35:28 each Exp $ -->
 <book xmlns:xi="http://www.w3.org/2001/XInclude">
   <title>BIND 9 Administrator Reference Manual</title>
 
@@ -6176,13 +6176,15 @@ options {
                   If <userinput>yes</userinput>, then an
                   IPv4-mapped IPv6 address will match any address match
                   list entries that match the corresponding IPv4 address.
-                  Enabling this option is sometimes useful on IPv6-enabled
-                  Linux
-                  systems, to work around a kernel quirk that causes IPv4
-                  TCP connections such as zone transfers to be accepted
-                  on an IPv6 socket using mapped addresses, causing
-                  address match lists designed for IPv4 to fail to match.
-                  The use of this option for any other purpose is discouraged.
+                </para>
+                <para>
+                  This option was introduced to work around a kernel quirk
+                  in some operating systems that causes IPv4 TCP
+                  connections, such as zone transfers, to be accepted on an
+                  IPv6 socket using mapped addresses.  This caused address
+                  match lists designed for IPv4 to fail to match.  However,
+                  <command>named</command> now solves this problem
+                  internally.  The use of this option is discouraged.
                 </para>
               </listitem>
             </varlistentry>