Overview

EIPs support both IPv4 and IPv6. You can assign new IPv6 EIPs or convert existing IPv4 EIPs into IPv6 EIPs.

After the IPv6 EIP function is enabled, you will obtain both an IPv4 EIP and its corresponding IPv6 EIP. External IPv6 addresses can access cloud resources through this IPv6 EIP.

IPv6 addresses are currently free, but will be billed at a later date (price yet to be determined).

Application Scenarios

If your application provides services for users who use IPv6 clients, you can use IPv6 EIPs.

If your application provides services for users who use IPv6 clients and analyzes the access request data, you need to use the IPv4 and IPv6 dual-stack function. For details about how to use the IPv4 and IPv6 dual-stack function, see IPv4 and IPv6 Dual-Stack Network.

If internal communication is required between your application systems or between your application system and another system (such as a database system), you need to use the IPv4 and IPv6 dual-stack function. For details about how to use the IPv4 and IPv6 dual-stack function, see IPv4 and IPv6 Dual-Stack Network.

Assigning an IPv6 EIP

Assign an EIP by following the steps provided in Assigning an EIP. On the page for assigning EIPs, select the option for enable IPv6 EIP Internet access. Then, an IPv6 EIP will be assigned to you.

Enabling IPv6 EIP

If you want an IPv6 EIP in addition to an existing IPv4 EIP, locate the row that contains the target IPv4 EIP in the EIP list, click More in the Operation column, and select Enable IPv6 EIP. Then, a corresponding IPv6 EIP will be assigned and you will have both IPv4 and IPv6 EIPs.

Configuring Security Groups

After IPv6 EIP is enabled, add inbound and outbound security group rules to allow packets to and from the IP address range 198.19.0.0/16. Table 1 shows the security group rules. The IPv6 EIP uses NAT64. NAT64 converts the source IP address in the inbound rule into an IPv4 address in the IP address range 198.19.0.0/16, converts the source port to a random port, and converts the destination IP address to a private IPv4 address of your local machine. The destination port remains the same.

Disabling IPv6 EIP

If you do not need the IPv6 EIP, locate the row that contains its corresponding IPv4 EIP in the EIP list, click More in the Operation column, and select Disable IPv6 EIP. Then, the IPv6 EIP will be released. After the release, you will only have the IPv4 EIP.