The article discusses migrating an existing Google Cloud network from IPv4 to dual-stack IPv6, focusing on Compute Engine VM instances used for external access.It describes the process consists of the following steps for a successful migration:
- Converting the existing VPC network to custom mode if it's currently in auto mode.
- Ensuring there are no organization policies restricting the use of IPv6.
- Updating the subnets in the VPC network to dual-stack includes associating IPv4 and IPv6 address ranges with the subnets.
- Updating the Compute Engine VM instances to dual-stack and connecting them to a dual-stack subnet.
- Creating firewall rules to allow or deny IPv6 address ranges.
