gethostbyname2
struct hostent *gethostbyname2(const char *, int);
(h = gethostbyname2(name, AF_INET6)))
return gethostbyname2(name, AF_INET);
DEF_WEAK(gethostbyname2);
PROTO_NORMAL(gethostbyname2);
h = gethostbyname2(host, family);