OpenLDAP 2.4.21 is now considered the most "stable" release of OpenLDAP Software
The OPENLDAP_STABLE cvs(1) tag has been moved forward to OPENLDAP_REL_ENG_2_4_21:
For definitions of "stable" and "release" versions of OpenLDAP
Software, please see the FAQ:
Users of prior "release" and "stable" versions of OpenLDAP Software
are strongly encouraged to upgrade.
-- The OpenLDAP Project