3.2.4.5 RRasAdminPortEnum (Opnum 4)
If the return code is ERROR_MORE_DATA (0x000000EA), then call RRasAdminPortEnum (Opnum 4) (section 3.1.4.5) with the handle passed in lpdwResumeHandle. If lpdwResumeHandle is NULL, the enumeration cannot be continued.
When the method completes with ERROR_SUCCESS (0x00000000) as the return value, the client MUST free the returned buffer pInfoStruct.