Global external Application Load Balancers and global external proxy Network Load Balancers can now load balance IPv6 traffic

## Feature Global external Application Load Balancers and global external proxy Network Load Balancers can now load balance IPv6 traffic. The following backends support dual stack: * VM instance group * Zonal NEGs (GCE\_VM\_IP\_PORT) You can now migrate the load balancer from IPv4 based deployments to dual stack (IPv4 and IPv6) deployments. For details, see: * [IPv6 termination for external Application Load Balancers and external proxy Network Load Balancers](https://cloud.google.com/load-balancing/docs/ipv6) * [Migrate global external Application Load Balancer to dual-stack backends](https://cloud.google.com/load-balancing/docs/migrate-global-ext-https-dualstack) * [Migrate global external proxy Network Load Balancers to dual-stack backends](https://cloud.google.com/load-balancing/docs/migrate-global-ext-proxy-dualstack) This feature is available in **Preview**.