I’ve been seeing bizarre problems with my openvpn client (on linux) over the last couple of days. It would connect, and I could access the network, but the VPN would regularly restart itself and connections would be closed, seeing messages like
Tue May 22 13:19:43 2012 [OpenVPN_Server] Inactivity timeout (--ping-restart), restarting Tue May 22 13:19:43 2012 TCP/UDP: Closing socket
I saw these problems when I tried my profile on several different computers.
I was unable to find anything on the internet about this (possibly my google fu was weak), but we’ve finally managed to track down the problem. I thought I’d put this here in case other people had the same issue.
This seems to happen when you’re running two openvpn clients with the same profile from different computers. I have two computers I use, and I’d left one idle running the VPN client. When I then tried to connect to the VPN from the other computer I would see this behaviour. I then (foolishly) left that computer trying to use the VPN when I went back to the first computer, so now the problem had mysteriously appeared there too.
Anyway, now that I know the issue it’s easy to avoid. Live and learn.