My machine get's an IP from OpenVPN server when connecting to the VPN gateway. This is tun0 on Ubuntu. I assume naming might be different for other systems that may connect to OpenVPN gateway.
Is that a reliable way (a script) to determine an IP, that was given to a machine by VPN gateway?
You probably want to specify an up script, which will receive the ifconfig_local and ifconfig_remote environment variables, which contain the local and remote IP addresses assigned to the VPN tunnel.
You'll also need to set script-security 2 in order to have your script actually run.
