choosing userprofile by NAS

Hi, how can I serve different information to the same user depending on the Huntgroup having all information stored in a LDAP-server? meaning: userA logging in NAS_A: receives IP-A supplied by LDAP userA logging in NAS_B: receives IP-B supplied by LDAP -- ---------------------------------------------------------- Dipl. Inf. Florian Prester Network Administration Regionales RechenZentrum Erlangen Universitaet Erlangen-Nuernberg Germany Tel.: +499131 8527813