I've been messing with trying to get SHA512 password hash formats in openldap 2.4.39 under a 64-bit CentOS 6 distribution, using the LTB RPMs.
SHA512 works fine for me with 2.4.39. --Quanah -- Quanah Gibson-Mount Server Architect Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration