Problem in accessing F5 VPN with Linux Fedora 36

That's helpful, actually. To me, that looks like your concentrator is doing an endpoint check and there's a timeout. APM endpoint inspection could include something like a mandatory Windows Registry Key value. If the administrators have not done an OS check prior to that mandatory value and booted your session out, you would likely be stuck where you are.. or if the OS check only included Windows / Mac and included no fail option. Your best bet is to talk to the people that run the APM. If you need help finding those people, your f5 sales team may know. DM me if you would like me to try to help.