Hi all, 
I configured freeradius (FreeRADIUS Version 2.2.2) with mysql,While testing Mikrotik NAS i found that Mikrotik-Total-Limit attribute it works upto 4gb then Mikrotik-Total-Limit-Gigawords for more than 4gb (4294967296 in bytes).If i set Mikrotik-Total-Limit value more then 3.9 GB ,it's taking random value or 0 for this attribute. 
Currently my hotspot ,wifi users data usage limit set in database, using store procedure it's calculating value for Mikrotik-Total-Limit and assigning other attributes. 
Today i tried by sending both attributes(Mikrotik-Total-Limit-Gigawords and Mikrotik-Total-Limit) in redreply, 

Sending Access-Accept of id 61 to 192.168.53.157 port 48563 
Mikrotik-Rate-Limit = "15M/16M" 
Mikrotik-Total-Limit = 5242880 (this value in bytes) 
Mikrotik-Total-Limit-Gigawords = 1 (this value in GB) 
Session-Timeout = 0 
Idle-Timeout = 0 
Port-Limit = 1 
I'm assuming that it will Terminate the session after 1026 mb usage (Mikrotik-Total-Limit + Mikrotik-Total-Limit-Gigawords), but user session not Terminating even after 1026 mb usage . 
I am not sure whether Mikrotik-Total-Limit-Gigawords taking value in GB or bytes. 
Please suggests how i can use Mikrotik-Total-Limit-Gigawords for more then 4 GB data limit.