This testvar must be explicitly defined in the configuration file
This parameter specifies the IP address of the PPP server created by CDRouter when PPTP is enabled. Note that PPTP creates a tunneled PPP connection once the PPTP control session is established. CDRouter will assign a new IP address to the PPTP client using this PPP session. Each end of the PPP connection must be configured using the PPTP server IP address and PPTP client IP address.