Amazon Web Services (AWS) has announced that there will be additional charges for the use of IPv4. The additional charges is for Elastic Classic Compute (EC2) users that are using IPv4 (either with Static or Dynamic IP Address). Previously, the use of IPv4 with EC2 is Free. If you are thinking about ditching IPv4 for your WordPress server to save cost, you will lose access to WordPress services.
As per testing on 30 October 2023, both WordPress.org, and WordPress.com does not have AAAA records. This means, WordPress can only be accessed with IPv4.
Hence, at least for now, you need to have your EC2 instances running in dual stack mode which have IPv4 and IPv6 connection.
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