We’ve been looking to try out the c5.* instances with the latest AMI for the aforementioned image within us-east-1, but this will fail due to both the allowed instance list not containing c5.* and the ENA support flag being set to false.

ENA support shipped with CentOS 7.4 and should now be fine to be enabled within the AMI metadata, which judging by a similar thread in July this year (https://lists.centos.org/pipermail/centos-virt/2017-July/005592.html) could also enable support for the c5.* instances where ENA is a requirement.

Would it be possible to enable ENA support for this image, as well as enable support for c5.* instances if that doesn’t happen automatically?

Thanks for everything, your work is very much appreciated.

Regards,