npf_config_submit
errno = npf_config_submit(ncf, npf_fd, NULL);
error = npf_config_submit(ncf, fd, &errinfo);
int npf_config_submit(nl_config_t *, int, npf_error_t *);
error = npf_config_submit(npf_conf, fd, &errinfo);
if ((errno = npf_config_submit(ncf, fd, &errinfo)) != 0) {