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#define _GNU_SOURCE
#include <sys/socket.h>
#include <netdb.h>
#include <string.h>
#include <netinet/in.h>
struct hostent *gethostbyname2(const char *name, int af)
{
static struct hostent h;
static long buf[512/sizeof(long)];
struct hostent *res;
if (gethostbyname2_r(name, af, &h,
(void *)buf, sizeof buf, &res, &h_errno)) return 0;
return &h;
}
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