diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index cd3755b..55d7329 100644
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -2257,7 +2257,7 @@ kill `cat /usr/local/pgsql/data/postmaster.pid`
      would <quote>mysteriously</quote> not come up successfully.  This
      appears to be the result of unexpected behavior in the IPv6
      implementation.  It looks like PostgreSQL and IPv6 do not play
-     very well together at this time on AIX.
+     very well together on AIX 5.3.
     </para>
 
     <para>
@@ -2291,6 +2291,14 @@ hosts=local4,bind4
       </listitem>
      </itemizedlist>
     </para>
+
+    <warning> <para> This seemed to work on AIX version 5.3, but is
+    not an elegant solution to the problem.  Others have reported that
+    this removal of IPv6 support caused problems on AIX 6.1,
+    specifically that this <quote>solution</quote> caused loss of
+    localhost. </para>
+    </warning>
+
    </sect3>
 
    <sect3>