Does ELB Support IPv6 Networks?
Shared load balancers support only IPv4 networks. Dedicated load balancer load balancers support both IPv4 and IPv6 networks.
At Layer 4, when a client communicates with a dedicated load balancer using an IPv6 address, the load balancer must communicate with backend servers using an IPv6 address. At Layer 7, when a client communicates with a dedicated load balancer using an IPv6 address, the load balancer must communicate with backend servers using an IPv4 address.
![](https://support.huaweicloud.com/intl/en-us/elb_faq/public_sys-resources/note_3.0-en-us.png)
- If you do not enable IPv6 for the specified backend subnet when you create a dedicated load balancer, the load balancer cannot use IPv6 addresses to route requests.
- If you need IPv6 networks, you must select a backend subnet with IPv6 enabled for your dedicated load balancer.
![](https://support.huaweicloud.com/intl/en-us/elb_faq/en-us_image_0000001259901195.png)
![](https://support.huaweicloud.com/intl/en-us/elb_faq/en-us_image_0000001259581281.png)
ELB Functionality FAQs
- Can ELB Be Used Separately?
- Does ELB Support Persistent Connections?
- Does ELB Support FTP on Backend Servers?
- Can ELB Block DDoS Attacks and Secure Web Code?
- Is an EIP Assigned Exclusively to a Load Balancer?
- How Many Load Balancers and Listeners Can I Have?
- What Types of APIs Does ELB Provide? What Are Permissions of ELB?
- Can I Adjust the Number of Backend Servers When a Load Balancer is Running?
- Can Backend Servers Run Different OSs?
- Can I Configure Different Backend Ports for a Load Balancer?
- Can ELB Be Used Across Accounts or VPCs?
- Can Backend Servers Access the Ports of a Load Balancer?
- Can I Bind a Public IP Address Purchased from a Third-Party Cloud Provider to My Load Balancer?
- Can Both the Listener and Backend Server Group Use HTTPS?
- Can I Change the VPC and Subnet for My Load Balancer?
- Can I Upgrade a Shared Load Balancer to a Dedicated Load Balancer Without Interrupting Traffic Routing?
- Does ELB Support IPv6 Networks?
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