The INTERFACE_ROUTE_ENTRY structure is used to store and retrieve entries of the IPv6 ForwardRow based on the dwIndex.

 typedef struct _INTERFACE_ROUTE_ENTRY {
   DWORD dwIndex;
   INTERFACE_ROUTE_INFO routeInfo;
 } INTERFACE_ROUTE_ENTRY,
  *PINTERFACE_ROUTE_ENTRY;

dwIndex: The index to the table of INTERFACE_ROUTE_INFO structures defined on RRAS.

routeInfo: This MUST be INTERFACE_ROUTE_INFO.