Hello,
 
For a number of reasons, I wanted to package OpenLDAP 2.4.30 for RHEL 6.   If anyone’s interested, you can get my package here…
 
http://wordpress.clarku.edu/abennett/2012/03/16/openldap-src-rpms-for-rhel-6/
 
It depends on DB5 so you’ll find a src rpm for that as well.  All the binaries go into /usr/local; configuration is in /etc/openldap and /etc/sysconfig; bdb files go in /var/lib/ldap.  The init script is the regular RHEL 5 patched to run the binary from a different location.  It conflicts with openldap-servers and openldap-clients but NOT with the base system openldap.
 
Let me know if it works for you or if you find issues with it.
 
Best,
 
Aaron
 
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Aaron Bennett
Manager, Systems Administration
Clark University ITS