extern void in6_ifdetach(struct ifnet *);
extern int in6_iid_from_hw(struct ifnet *, struct in6_addr *);
extern void in6_iid_mktmp(struct ifnet *, u_int8_t *, const u_int8_t *, int);
extern void in6_ifdetach(struct ifnet *);
extern int in6_iid_from_hw(struct ifnet *, struct in6_addr *);
extern void in6_iid_mktmp(struct ifnet *, u_int8_t *, const u_int8_t *, int);