What's new in 4.0beta4:
*) incorporated all the bugfixes since v3.27;
*) user manager - old credits migrated to new profiles;
*) user manager - profile support for radius requests;
*) user manager - style saving bugfix for child customers;
*) user manager - parent router accepts requests containing
data for user of a child customer;
*) user manager - IP address reset bugfix;
*) user manager - permission field for customers;
Lembrando que a recomendação de uso hoje da versão 4.xx é somente para estudos ou mesmo para quem quer testar a tecnologia "N"...