You can now use custom constraints with Organization Policy to provide more granular control over specific fields for some networksecurity and networkservices resources

## Feature You can now use [custom constraints](https://cloud.google.com/service-mesh/docs/service-routing/custom-constraints) with Organization Policy to provide more granular control over specific fields for some networksecurity and networkservices resources. ## Feature Cloud Service Mesh now supports dual-stack, extending IPv6 capability to both proxy-based Envoy and proxyless gRPC. For more information, see [Configure IPv6 dual-stack for Cloud Service Mesh](https://cloud.google.com/service-mesh/docs/service-routing/configure-dual-stack-ipv6). ## Announcement If you use the managed Cloud Service Mesh with the `ISTIOD` control plane implementation, important changes have been made to how and when you'll receive notifications of upcoming modernization. For details, see [Managed control plane modernization](https://cloud.google.com/service-mesh/docs/modernization#notifications-and-scheduling).