+ if (option != NULL) {
+ if (!nfs_get_proto(option, &tmp_family, &protocol)) {
+ nfs_error(_("%s: Failed to find '%s' protocol"),
+ progname, option);
+ errno = EPROTONOSUPPORT;
+ goto out_err;
+ }
+ if (!nfs_verify_family(tmp_family))
+ goto out_err;
+ *family = tmp_family;
+ return 1;
+ }