Freeradius+pbkdf2

Hello,     My users' passwords are stored in ldap using pbkdf2 encryption, until Freeradius v2  all users were successfully authenticated, when migrating to the Freeradius 3.2.3 version users are unable to authenticate using pbkdf2 encryption. What could have happened? Is there any way to resolve this problem? Thank you very much. Att, André Luis Forigato RNP