Virtual Private Cloud
A VPC is a logically isolated network space that you custom on a cloud platform, similar to the traditional network you run in a data center. IPv4 and IPv6 dual stack can be enabled for the VPC at the same time.
Subnet
A VPC consists of at least one subnet, and the subnet's CIDR block must be within the VPC's CIDR. All cloud resources in a VPC, such as cloud virtual machines and databases, must be deployed within a subnet. Subnets can also support both IPv4 and IPv6, enabling dual stack.
Elastic Network Interface
An Elastic Network Interface (ENI) is an elastic network interface bound to a CVM in a VPC and can be freely migrated between multiple CVMs. An ENI can obtain both IPv4 and IPv6 addresses at the same time.
Cloud Virtual Machine
CVM provides you with secure and reliable elastic computing services and supports dual-stack networking with both IPv4 and IPv6, with its IPv6 address assigned through the associated ENI.
Global Unicast Address
The Global Unicast Address (GUA) is equivalent to the public network address in IPv4 and can be globally routed and accessed on the IPv6 Internet. This address type allows aggregation of routing prefixes, thereby limiting the number of global routing table entries.