There is no option on the RRAS snapin to Allow Calling Computer to Specify its own IP Address, when the RRAS server is a member of a domain.

To work around this issue:

1. Set the remote access policy to Server settings define policy.

2. Use Regedt32 to navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteAccess\Parameters\Ip

3. On the Edit menu, Add Value name AllowClientIpAddresses, as a type REG_DWORD. Set the data value to 1.

If the RRAS server is NOT a domain member:

1. Right-click My Network Places and select Properties.

2. Right-click Incoming Connections, select Properties / Networking.

3. Press Internet Protocol(TCP/IP) / Properties / Allow calling computer to specify its own IP address.

4. Close My Network Places.