ipv6Enabled

If you want CloudFront to respond to IPv6 DNS requests with an IPv6 address for your distribution, specify `true`. If you specify `false`, CloudFront responds to IPv6 DNS requests with the DNS response code `NOERROR` and with no IP addresses. This allows viewers to submit a second request, for an IPv4 address for your distribution. In general, you should enable IPv6 if you have users on IPv6 networks who want to access your content. However, if you're using signed URLs or signed cookies to restrict access to your content, and if you're using a custom policy that includes the `IpAddress` parameter to restrict the IP addresses that can access your content, don't enable IPv6. If you want to restrict access to some content by IP address and not restrict access to other content (or restrict access but not by IP address), you can create two distributions. For more information, see Creating a Signed URL Using a Custom Policy in the Amazon CloudFront Developer Guide. If you're using an R53AWSIntlong alias resource record set to route traffic to your CloudFront distribution, you need to create a second alias resource record set when both of the following are true:

• You enable IPv6 for the distribution

• You're using alternate domain names in the URLs for your objects For more information, see Routing Traffic to an Amazon CloudFront Web Distribution by Using Your Domain Name in the Developer Guide. If you created a CNAME resource record set, either with R53AWSIntlong or with another DNS service, you don't need to make any changes. A CNAME record will route traffic to your distribution regardless of the IP address format of the viewer request.