- 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, click Allocate IPv6 CIDR, and the system will assign one
/64IPv6 CIDR block to this subnet.
- Select a subnet that has already been assigned an IPv6 CIDR, click Release IPv6 CIDR, and confirm the operation. The system will reclaim the IPv6 CIDR of the subnet.
