Hello, I've got a standard configuration of FreeRadius + OpenVPN + IPsec . Everything works good except of traffic accounting for OpenVPN . Some TCP\UDP sessions has no problems with accounting but some has no any data about Acct-Input-Octets and Acct-Output-Octets Example: /var/log/radius/radacct/IP_address/detail-20180719 Thu Jul 19 12:20:08 2018 User-Name = "******@gmail.com" NAS-IP-Address = *********** NAS-Port = 2 Service-Type = Outbound-User Framed-Protocol = PPP Framed-IP-Address = 10.0.3.10 Calling-Station-Id = "***********" NAS-Identifier = "OpenVpn" Acct-Status-Type = Stop Acct-Input-Octets = 0 Acct-Output-Octets = 0 Acct-Session-Id = "40B889944DEC6DA1C2905D0CC5EE9D08" Acct-Session-Time = 32 Acct-Input-Gigawords = 0 Acct-Output-Gigawords = 0 NAS-Port-Type = Virtual Acct-Unique-Session-Id = "6ae1bb07105d7ebb" Timestamp = 1531995608 There are no errors in logs on OpenVPN server and FreeRadius server. Just 50/50 no traffic information come to freeradius server (looks like). Maybe someone have any suggestions what to check and how to fix this problem? I'm ready to provide any logs or configs for further proceedings . Best regards