newIngress.Spec.DefaultBackend = &networking.IngressBackend{
					Resource: resourceBackend}
			},
			expectedErrs: field.ErrorList{},
		},
		"old DefaultBackend.Resource allowed on update": {
			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
				oldIngress.Spec.DefaultBackend = &networking.IngressBackend{
					Resource: resourceBackend}

	}
	if err := s.AddGeneratedConversionFunc((*v1.IngressBackend)(nil), (*networking.IngressBackend)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_v1_IngressBackend_To_networking_IngressBackend(a.(*v1.IngressBackend), b.(*networking.IngressBackend), scope)
	}); err != nil {
		return err
	}

	}); err != nil {
		return err
	}
	if err := s.AddConversionFunc((*networking.IngressBackend)(nil), (*v1beta1.IngressBackend)(nil), func(a, b interface{}, scope conversion.Scope) error {
		return Convert_networking_IngressBackend_To_v1beta1_IngressBackend(a.(*networking.IngressBackend), b.(*v1beta1.IngressBackend), scope)
	}); err != nil {
		return err
	}

	// Backend defines the referenced service endpoint to which the traffic
	// will be forwarded to.
	Backend IngressBackend `json:"backend" protobuf:"bytes,2,opt,name=backend"`
}

// IngressBackend describes all endpoints for a given service and port.
type IngressBackend struct {
	// Specifies the name of the referenced service.
	// +optional