Someone

                if(ConfigFileEntry.default_invisible)
                        {
                                client_p->umodes |= UMODE_INVISIBLE;
                                Count.invisi++;
                        }
 
                 if(!IsConfDoSpoofIp(aconf))
                        {
                        if ((make_virthost(client_p->sockhost, client_p->realhost, client_p->host)) > 0) {
                                client_p->umodes |= UMODE_VIRTHOST;
                        }
                        else {
                                ilog (L_MAIN, "Could not mask user: %s!%s@%s", client_p->name, client_p->username, client_p->host);
                                sendto_realops_flags(UMODE_ALL, L_ALL, "Could not mask user: %s!%s@%s", client_p->name, client_p->username, client_p->host);
                        }
                }