Since 2016, I started manage my own VPN infrastructure for my own usage and also for testing purpose. My VPN is not always started, in fact, I use it rarely. After the latest upgrade of OpenBSD to 7.9, I started to see the openvpn vanishing after few minutes of usage. It was not really important, but recently, I needed someone else to use the VPN for debugging purpose and... Every 3 or 4 minutes, the service crashed. Not really cool for a debugging session, fortunately, having tmux (or tmate) running on the other side is life saving. Let stop the openvpn service and invoke it as a standalone service instead of a daemon.
$ doas openvpn --config /etc/openvpn/server.conf
2026-06-20 08:27:44 us=727112 TCP/UDP: Closing socket
2026-06-20 08:27:46 us=638261 MULTI: multi_create_instance called
openvpn(90124) in free(): double free 0x3626945d540
