}
	if err := ValidatePort(int(config.Port)); err != nil {
		errs = AppendErrors(errs, err)
	}
	if err := validateExtensionProviderService(config.Service); err != nil {
		errs = AppendErrors(errs, err)
	}
	if err := validateExtensionProviderEnvoyExtAuthzStatusOnError(config.StatusOnError); err != nil {
		errs = AppendErrors(errs, err)
	}
	if config.PathPrefix != "" {

		errs = AppendErrors(errs, fmt.Errorf("short names (non FQDN) are not allowed"))
	}

	if err := ValidateWildcardDomain(hostname); err != nil {
		if !isGateway {
			errs = AppendErrors(errs, err)
		}

		// Gateway allows IP as the host string, as well
		if !netutil.IsValidIPAddress(hostname) {
			errs = AppendErrors(errs, err)
		}
	}
	// partial wildcard is not allowed