https://bugs.openldap.org/show_bug.cgi?id=10202
--- Comment #1 from Nadezhda Ivanova nivanova@symas.com --- It seems nestgroup is added twice to slap_oinfo:
Making servers/slapd/overlays/statover.c Add nestgroup ... Add accesslog ... Add auditlog ... Add autoca ... Add collect ... Add constraint ... Add dds ... Add deref ... Add dyngroup ... Add dynlist ... Add homedir ... Add memberof ... Add nestgroup ...