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_MULTICAST(const struct in6_addr *a)
10{
11	return (a->s6_bytes[0] == 0xff);
12}