Radius accounting

Hello everybody, Im having troubles in accounting packets, for example, this two packets below (Start and Stop) have a time difference of 565 sec but the stop packet says “Acct-Session-Time = 265”, obviously this values are not consistent.

Acc-Start-Time > Tue Mar 14 12:00:02 2017
Acc-Stop-Time > Tue Mar 14 12:09:27 2017
Acct-Session-Time > 265

I’ve already check the Radius Config and its ok, so I assume that the MK is not sending correct values to the RADIUS, please help me to resolve this issues, this are the MK packets received in the RADIUS server:

Tue Mar 14 12:00:02 2017
Acct-Status-Type = Start
NAS-Port-Type = Wireless-802.11
Calling-Station-Id = “CC:79:4A:A3:5C:76”
Called-Station-Id = “hs_ticnet”
NAS-Port-Id = “br_ticnet”
User-Name = “UKN4VcIMldp1lrpfVXp3kKt0_Merlot”
NAS-Port = 2149611751
Acct-Session-Id = “802078e7”
Framed-IP-Address = 10.10.1.144
Mikrotik-Host-IP = 10.10.1.144
Event-Timestamp = “Mar 14 2017 12:00:02 CLST”
NAS-Identifier = “Huesped”
Acct-Delay-Time = 0
NAS-IP-Address = 10.100.1.10
Tmp-String-9 = “ai:”
Acct-Unique-Session-Id = “83680925a5736bd81de40ffa4794aa18”
Timestamp = 1489503602

Tue Mar 14 12:09:27 2017
Acct-Status-Type = Stop
Acct-Terminate-Cause = Idle-Timeout
NAS-Port-Type = Wireless-802.11
Calling-Station-Id = “CC:79:4A:A3:5C:76”
Called-Station-Id = “hs_ticnet”
NAS-Port-Id = “br_ticnet”
User-Name = “UKN4VcIMldp1lrpfVXp3kKt0_Merlot”
NAS-Port = 2149611751
Acct-Session-Id = “802078e7”
Framed-IP-Address = 10.10.1.144
Mikrotik-Host-IP = 10.10.1.144
Event-Timestamp = “Mar 14 2017 12:09:27 CLST”
Acct-Input-Octets = 84422
Acct-Output-Octets = 113059
Acct-Input-Gigawords = 0
Acct-Output-Gigawords = 0
Acct-Input-Packets = 407
Acct-Output-Packets = 362
Acct-Session-Time = 265
NAS-Identifier = “Huesped”
Acct-Delay-Time = 0
NAS-IP-Address = 10.100.1.10
Tmp-String-9 = “ai:”
Acct-Unique-Session-Id = “83680925a5736bd81de40ffa4794aa18”
Timestamp = 1489504167

Unfortunatelly this is one of thousand packets with the same issue. I really appreciate your help.

Best regards,
Baldacia