func convertToPort(v string) (uint32, error) {
	p, err := strconv.ParseUint(v, 10, 32)
	if err != nil || p > 65535 {
		return 0, fmt.Errorf("invalid port %s: %v", v, err)
	}
	return uint32(p), nil
}

func extractNameInBrackets(s string) (string, error) {
	if !strings.HasPrefix(s, "[") || !strings.HasSuffix(s, "]") {
		return "", fmt.Errorf("expecting format [<NAME>], but found %s", s)
	}