Hello! Thank you very much for the up-to-date AWS images for CentOS 7 on https://centos.org/download/aws-images/ .
They contain all the necessary drivers for fast networking, but unfortunately the images lack a simple flag ("SRIOV") on the image to activate some of the drivers.
The bug has been open since 2015: https://bugs.centos.org/view.php?id=8541 Reading related bugs, it sounds like the flag may have been added in the meantime, however right now it is missing (tested on ami-0686851c4e7b1a8e1).
How can I help resolve this?
Best regards, Viktor.