- Log in to the VPC Console.
- Click Subnet in the left directory. On the top of the Subnet list, select Region and VPC. All subnet information under the region and VPC will be displayed.
- Select a subnet and click Allocate IPv6 CIDR. The system will allocate one
/64IPv6 CIDR.
- Select a subnet that has obtained an IPv6 CIDR, click Release IPv6 CIDR, and confirm the operation. The system will then reclaim the IPv6 CIDR of the subnet.


