Is the root server downloading this automatically, or are you manually performing downloads, or using the Airgap Tool / BESDownloadCacher?
If the root server is downloading this file, what version is your root server?
The URL we download has a redirect, but my root server, and the ones on which we tested, are transparently following that redirect to get to the correct file. If you’re using something like ‘curl’ to manually download ahead of time, you’d have to use the “-L” option to follow location redirects to the final file.