return nil, fmt.Errorf("iptables version %q is not a valid version string: %v", match[1], err)
	}
	return version, nil
}

// transformToXTablesErrorMessage returns an updated error message with explicit xtables error hints, if applicable.
func transformToXTablesErrorMessage(stderr string, err error) string {
	ee, ok := err.(*exec.ExitError)
	if !ok {
		// Not common, but can happen if file not found error, etc