gethostbyname2_async
struct asr_query *gethostbyname2_async(const char *, int, void *);
as = gethostbyname2_async(name, af, NULL);
DEF_WEAK(gethostbyname2_async);
return gethostbyname2_async(name, AF_INET, asr);
PROTO_NORMAL(gethostbyname2_async);