397  * Determine the appropriate scope zone ID for in6 and ifp.  If ret_id is
399  * in the in6_addr structure, in6 will be modified.
404 in6_setscope(struct in6_addr *in6, struct ifnet *ifp, u_int32_t *ret_id)  in in6_setscope()  argument
414 	if (IN6_IS_ADDR_LOOPBACK(in6)) {  in in6_setscope()
418 		scope = in6_addrscope(in6);  in in6_setscope()
427 			in6->s6_addr16[1] = htons(zoneid & 0xffff); /* XXX */  in in6_setscope()
453 in6_clearscope(struct in6_addr *in6)  in in6_clearscope()  argument
457 	if (IN6_IS_SCOPE_LINKLOCAL(in6) || IN6_IS_ADDR_MC_INTFACELOCAL(in6)) {  in in6_clearscope()
458 		if (in6->s6_addr16[1] != 0)  in in6_clearscope()
460 		in6->s6_addr16[1] = 0;  in in6_clearscope()
470 in6_getscope(const struct in6_addr *in6)  in in6_getscope()  argument
473 	if (IN6_IS_SCOPE_LINKLOCAL(in6) || IN6_IS_ADDR_MC_INTFACELOCAL(in6))  in in6_getscope()
474 		return (in6->s6_addr16[1]);  in in6_getscope()
480  * Returns scope zone id for the unicast address @in6.
486 in6_get_unicast_scopeid(const struct in6_addr *in6, const struct ifnet *ifp)  in in6_get_unicast_scopeid()  argument
489 	if (IN6_IS_SCOPE_LINKLOCAL(in6))  in in6_get_unicast_scopeid()
495 in6_set_unicast_scopeid(struct in6_addr *in6, uint32_t scopeid)  in in6_set_unicast_scopeid()  argument
498 	in6->s6_addr16[1] = htons(scopeid & 0xffff);  in in6_set_unicast_scopeid()