OpenLDAP 2.4.22 Engineering
Added slapd SLAP_SCHEMA_EXPOSE flag for hidden schema elements (ITS#6435)
Added slapd tools selective iterations (ITS#6442)
+ Added slapd syncrepl TCP keepalive (ITS#6389)
Added slapo-ldap idassert-passthru (ITS#6456)
Added slapo-pbind
Fixed libldap GnuTLS serial length (ITS#6460)