-extern void ip_address_to_46 (const ip_address_t * addr,
- ip46_address_t * a, fib_protocol_t * proto);
+extern fib_protocol_t ip_address_to_46 (const ip_address_t * addr,
+ ip46_address_t * a);
+extern void ip_address_from_46 (const ip46_address_t * a,
+ fib_protocol_t fproto, ip_address_t * addr);