validation := validateWorkloadSelector(in.Selector)
		errs = appendErrors(errs, validation)

		return validation.Warning, errs
	})

// ValidateVirtualService checks that a v1alpha3 route rule is well-formed.
var ValidateVirtualService = RegisterValidateFunc("ValidateVirtualService",
	func(cfg config.Config) (Warning, error) {
		virtualService, ok := cfg.Spec.(*networking.VirtualService)
		if !ok {