Does ELB Support IPv6 Networks?
Shared load balancers support only IPv4 networks. Dedicated load balancer 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.
- 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.
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