res_nsearch
int res_nsearch(res_state, const char *, int, int, unsigned char *,
n = res_nsearch(res, name, C_IN, type, buf->buf, (int)sizeof(buf->buf));
anslen = res_nsearch(res, qbuf, C_IN, T_PTR, buf->buf,
return (res_nsearch(&_nres, name, class, type, answer, anslen));