Hello,

I am trying to monitor the user activity on OpenVPN server using the status 
files. And sometimes I have "CLIENT_LIST,UNDEF" instead of the certificate. 
After a couple of minutes they disapear.

The logs look like this:



Invalid username in line 
CLIENT_LIST,UNDEF,10.10.10.10:1078,11.11.11.11,,260892153,103724974,2023-10-24 
14:06:45,1698145605,vpn_user,336986,336,AES-256-GCM

Invalid username in line 
CLIENT_LIST,UNDEF,12.12.12.12:1195,13.13.13.13,,90397007,614253745,2023-10-24 
08:12:37,1698124357,vpn2_user,1155,134,AES-256-GCM



[server]# openvpn --version

OpenVPN 2.5.7 x86_64-redhat-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] 
[PKCS11] [MH/PKTINFO] [AEAD] built on May 31 2022

library versions: OpenSSL 1.1.1k  FIPS 25 Mar 2021, LZO 2.08

Originally developed by James Yonan

Copyright (C) 2002-2022 OpenVPN Inc <mailto:sa...@openvpn.net>



Also I have in logs a lot of UNDEF messages:



Oct 24 18:02:00 openvpn openvpn[111111]: vpn-user-25834/2.2.2.2:45381 TLS 
ERROR: local/remote key IDs out of sync (1/2) ID:  [key#0 state=S_START id=1 
sid=555036c4 51130b51] [key#1 state=S_ACTIVE id=7 sid=555036c4 51130b51] [key#2 
state=S_UNDEF id=0 sid=00000000 00000000]

Oct 24 18:02:49 openvpn openvpn[111111]: vpn_user:57417/3.3.3.3:1195 [UNDEF] 
Inactivity timeout (--ping-restart), restarting



If you need any additional information, please let me know and I will provide 
it.



Thank you,
Claudiu Cristea 
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