AIX FAQ - IPv6 Fun

cbbrowne@dba2:/opt/OXRS/sources/pgsql-HEAD/doc$ cvs diff -u FAQ_AIX
Index: FAQ_AIX
===================================================================
RCS file: /projects/cvsroot/pgsql/doc/FAQ_AIX,v
retrieving revision 1.17
diff -c -u -r1.17 FAQ_AIX
cvs diff: conflicting specifications of output style
--- FAQ_AIX    13 Apr 2006 11:41:02 -0000    1.17
+++ FAQ_AIX    25 May 2006 21:06:21 -0000
@@ -365,3 +365,35 @@
   IBM Redbook
   http://www.redbooks.ibm.com/redbooks/pdfs/sg245674.pdf
   http://www.redbooks.ibm.com/abstracts/sg245674.html?Open
+
+
+Statistics Collector Fun on AIX
+--------------------------------
+
+When implementing PostgreSQL version 8.1 on AIX 5.3, we periodically
+ran into problems where the statistics collector would "mysteriously"
+not come up successfully.
+
+This appears to be the result of unexpected behaviour in the IPv6
+implementation.  It looks like PostgreSQL and IPv6 do not play very
+well together at this time on AIX.
+
+Any of the following actions "fix" the problem.
+
+1.  Delete the localhost ipv6 address
+
+(as root)
+# ifconfig lo0 inet6 ::1/0 delete
+
+2.  Remove IPv6 from net services.  The file /etc/netsvc.conf, on AIX,
+is roughly equivalent to /etc/nsswitch.conf on Solaris/Linux.
+
+The default, on AIX, is thus:
+
+  hosts=local,bind
+
+Replace this with:
+
+  hosts=local4,bind4
+
+to deactivate searching for IPv6 addresses.
\ No newline at end of file

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