check_secure_net_ti
if (!(check_secure_net_ti(nbuf, ypname))) {
int check_secure_net_ti(struct netbuf *caller, char *ypname);
if (!(check_secure_net_ti(nbuf, fun))) {
if (!check_secure_net_ti(nbuf, ypname)) {
extern int check_secure_net_ti(struct netbuf *, char *);