Commit 1a0eecfe authored by Evan Hunt's avatar Evan Hunt

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

			[RT #12252]
parent c36ba263
2700. [doc] The match-mapped-addresses option is discouraged.
[RT #12252]
2699. [bug] Missing lock in rbtdb.c. [RT #20037]
2698. [placeholder]
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......@@ -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>
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