Hi, I am trying to use simualtaneous-use with radutmp file but cisco controller is always sending the same port to all devices and logs NAS-Port=1 for all devices in accounting detail file. Here is the typical log : Mon May 26 13:54:10 2014 User-Name = "anonymous@mwn.de" NAS-Port = 1 NAS-IP-Address = 192.168.1.1 Framed-IP-Address = 10.1.1.1 NAS-Identifier = "mytestNAS" Airespace-Wlan-Id = 300 Acct-Session-Id = "53833d09/b8:f6:b1:d1:cc:89/3584354" NAS-Port-Type = Wireless-802.11 Cisco-AVPair = "audit-session-id=82d0a5f80004506053833d07" Acct-Authentic = RADIUS Event-Timestamp = "May 26 2014 13:54:10 GMT" Acct-Status-Type = Interim-Update Acct-Input-Octets = 274220 Acct-Input-Gigawords = 0 Acct-Output-Octets = 354276 Acct-Output-Gigawords = 0 Acct-Input-Packets = 2174 Acct-Output-Packets = 1529 Acct-Session-Time = 2681 Acct-Delay-Time = 0 Calling-Station-Id = "10.1.1.1" Called-Station-Id = "192.168.1.1" Cisco-AVPair = "nas-update=true" Acct-Unique-Session-Id = "df8c433d8fc2ee10" Realm = "DEFAULT" Timestamp = 1401112450 Request-Authenticator = Verified Can I not change that NAS-IP to actual wireless access point rather the controller IP address ? I tried changing /etc/raddb/acct_users file as : NAS-Identifier == "mytestNAS", NAS-IP-Address := "%{Framed-IP-Address:-%{NAS-IP-Address}}" but I still get the NAS-Port=1 for all the device. There must be users whose cisco wireless access points controlled by the controller - can someone point me ? Khapare