tcpd_gethostbyname
if ((hp = tcpd_gethostbyname(host, 0)) == 0) {
if ((hp = tcpd_gethostbyname(host->name, SGFAM(sin))) == 0) {
return (tcpd_gethostbyname(name, af));
return (tcpd_gethostbyname(dot_name, af));
extern struct hostent *tcpd_gethostbyname();