1#ifndef WIN32_LEAN_AND_MEAN
 2#define WIN32_LEAN_AND_MEAN
 3#endif
 4#undef  __CRT__NO_INLINE
 5#define __CRT__NO_INLINE
 6#include <winsock2.h>
 7#include <ws2tcpip.h>
 8
 9int IN6_IS_ADDR_V4MAPPED(const struct in6_addr *a)
10{
11	return ((a->s6_words[0] == 0) &&
12		(a->s6_words[1] == 0) &&
13		(a->s6_words[2] == 0) &&
14		(a->s6_words[3] == 0) &&
15		(a->s6_words[4] == 0) &&
16		(a->s6_words[5] == 0xffff));
17}