CloudFront connect to Ipv6 Only EC2 Instance

Question

1. I manage an EC2 Instance with an IPv6-only configuration and need to connect CloudFront to it.
2. The instance lacks a public IPv6 DNS, and I'm exploring options to avoid adding an IPv4 address, which could increase costs.
3. Seeking insights and solutions from the community:
   a. Does anyone have experience with connecting CloudFront to an IPv6-only EC2 Instance?
   b. Are there any workarounds available?
   c. Is AWS working on a solution that might simplify this process?

pacohope · Answer

This is answered on [this other Re:Post question](https://repost.aws/questions/QUOWEDVURTSxWkSlenuHaS4g/cloudfront-support-for-ipv6-origins). The short answer is that, no, CloudFront will not (at this time) use IPv6 to connect to an IPv6-only origin. So you can allow direct connections to the EC2 instance, and regulate that through Security Groups, NACLs, and host-based firewall rules (e.g., `ipfilter` or `ipfw`). The other answer points to the definitive page where you can look up IPv6 support by service. So while this is true at the time of writing, you can expect IPv6 support to improve over time, and those pages are the way to figure out whether IPv6 is possible.

Andras Toth · Answer

Amazon CloudFront now supports IPv6 origins for end-to-end IPv6 delivery  
https://aws.amazon.com/blogs/networking-and-content-delivery/amazon-cloudfront-now-supports-ipv6-origins-for-end-to-end-ipv6-delivery/

Abhi Varshney · Answer

This is supported now. https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/cloudfront-enable-ipv6.html

Obijan · Answer

This is not yet supported

CloudFront connect to Ipv6 Only EC2 Instance

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