IPv6-only Subnets in a Dual Stack Amazon Amazon VPC
Publication date: June 23, 2022 (Diagram history)
This architecture shows how to integrate IPv6-only subnets in your dual stack Amazon VPC. IPv6-only subnets can coexist with IPv4-only and dual stack subnets in the same Amazon VPC.
IPv6-only subnets in a dual stack Amazon Amazon VPC architecture
The following numbered items describe the key components in this architecture:
To create IPv6-only subnets, you start with a dual stack Amazon Amazon VPC. The Amazon VPC needs to have a secondary IPv6 CIDR associated with it.
IPv6-only subnets only have an IPv6 CIDR associated with them, and do not need associated IPv4 CIDRs. IPv6-only subnets are bound to an Availability Zone the same as dual stack or IPv4-only subnets.
IPv6-only subnets can coexist in the same Amazon VPC as IPv4-only subnets and dual stack subnets. You can also choose to have dual stack VPCs with IPv6-only subnets, but keep in mind that the primary Amazon VPC CIDR is an IPv4 CIDR.
When you create an Amazon EC2 instance in the IPv6-only subnet, the IPv6 address is either automatically assigned from the subnet CIDR through DHCPv6, or you can manually configure it.
IPv6-only resources in IPv6-only subnets can communicate natively over IPv6 with other IPv6-only resources or dual stack resources in other subnets in the Amazon VPC.
IPv4-only resources in the IPv4-only subnets can communicate natively over IPv4 with other IPv4-only resources or dual stack resources in other subnets in the Amazon VPC.
Note
IPv6-only resources in the IPv6-only subnets cannot communicate with IPv4-only resources in other subnets in the Amazon VPC.
Further reading
For additional information, see the following resources:
Diagram history
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| Change | Description | Date |
|---|---|---|
Reference architecture diagram first published. | June 23, 2022 | |
Initial publication | Reference architecture diagram first published. | June 23, 2022 |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 | |
Reference architecture diagram first published. | June 23, 2022 |
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