- struct {
- struct in6_addr addr;
-#ifdef HAVE_SOCKADDR_IN6_SCOPE_ID
- unsigned int scope_id;
-#endif /* HAVE_SOCKADDR_IN6_SCOPE_ID */
- } ipv6;
-#endif /* ENABLE_IPV6 */
- struct {
- struct in_addr addr;
- } ipv4;
- } u;
-} ip_address;
-
-/* Because C doesn't support anonymous unions, access to ip_address
- elements is unwieldy. Hence the accessors.
-
- The _ADDR accessors return the address as the struct in_addr or
- in6_addr. The _DATA accessor returns a pointer to the address data
- -- pretty much the same as the above, but cast to void*. The
- _SCOPE accessor returns the address's scope_id, and makes sense
- only when IPv6 and HAVE_SOCKADDR_IN6_SCOPE_ID are both defined. */
-
-#define ADDRESS_IPV4_IN_ADDR(x) ((x)->u.ipv4.addr)
-/* Don't use &x->u.ipv4.addr.s_addr because it can be #defined to a
- bitfield, which you can't take an address of. */
-#define ADDRESS_IPV4_DATA(x) ((void *)&(x)->u.ipv4.addr)
-
-#define ADDRESS_IPV6_IN6_ADDR(x) ((x)->u.ipv6.addr)
-#define ADDRESS_IPV6_DATA(x) ((void *)&(x)->u.ipv6.addr)
-#define ADDRESS_IPV6_SCOPE(x) ((x)->u.ipv6.scope_id)
-
-
-/* Flags for lookup_host */
-#define LH_SILENT 0x0001
-#define LH_PASSIVE 0x0002
-#define LH_IPV4_ONLY 0x0004
-#define LH_IPV6_ONLY 0x0008
-
-/* Function declarations */
-struct address_list *lookup_host PARAMS ((const char *, int));
-char *herrmsg PARAMS ((int));
-
-void forget_host_lookup PARAMS ((const char *));