openvpn – TLS Error: local/remote TLS keys are out of sync and VPN restarts
one day an openvpn that used to carry traffic for the last 7 years started to misbehave. openvpn’s own built in watchdog was restarting it every few minutes. one of the tunnels endpoints – a- is behind NAT that we don’t control, another – b – is a host with public ip address.