Is it possible to add PPTP support on the SRP540?

With latest software release 1.02.01 (023) Aug 12 2011, you cannot create multiple VPN tunnels with the same local IP network.  If the tunnel existed prior to upgrading it works fine.  After the upgrade when you create the tunnel you get:Fail! Overla...

Tested with version 1.02.01 (023) Aug 12 2011 as well as current.When using multiple WAN interfaces and the voice is routed to WAN2, once the re-invite is processed, the SRP send the T.38 stream out the WAN1 interface sourced from the WAN2 IP address...

Testing with software 1.02.00 (023), when the SRP negotiates T.38 either in the INVITE or 200 OK, it always sends a media IP of 0.0.0.0.