>Where can i set it up? I use rp-pppoe-server and ppp 2.4.4 on debian That attribute should be replied by the server in access-accept RADIUS packet. You can define it for each user in your user DB ( SQL, LDAP ) and freeradius should be able to add it to the above mentioned packet.
Regards, E:S - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html