Dear Friends, Right now I have setup working of freeradius with mysql authentication. I have static & dynamic group created in mysql and all seems working. Currently static IPs are provided by radius with mysql backend. But dynamic IP is provided by Cisco Router. Cisco router is configured as PPPOE/PPPOA. Cisco does all authentication with freeradius. Now what I want is to provided Dynamic IPs with freeradius instead of Cisco. I have searched alot and tried few setting but that didnt worked. Is it possible to configure USERS file and have all dynamic users get dynamically using USERS file ? I checked but wasnt sucessful. Or a solution in mysql itself. For testing i had activated below config in radiusd.conf ippool main_pool { # range-start,range-stop: The start and end ip # addresses for the ip pool range-start = 192.168.1.1 range-stop = 192.168.3.254 # netmask: The network mask used for the ip's netmask = 255.255.255.0 # cache-size: The gdbm cache size for the db # files. Should be equal to the number of ip's # available in the ip pool cache-size = 800 # session-db: The main db file used to allocate ip's to clients session-db = ${raddbdir}/db.ippool # ip-index: Helper db index file used in multilink ip-index = ${raddbdir}/db.ipindex # override: Will this ippool override a Framed-IP-Address already set override = no # maximum-timeout: If not zero specifies the maximum time in seconds an # entry may be active. Default: 0 maximum-timeout = 0 } main_pool in accounting & post-auth modules. doing this and starting the radius gives me segmentation error. Any suggestion please ? Regards, Joel