Really at the level of the dns server to reference a file on another host?

Not really be hosted on GD where all the links are temporary

I think not worth powder and shot.

Before there was such a function as Google Drive Host, which automatically hostile any content in the public folder. Accordingly, the titles they gave is correct, and the browser did the right thing.

Now this feature is disabled, the server gives another Content-Disposition.

Plus, without a nearby ID file you will not be able to pull external files, even if you manage to replace the headers.

Sincerely,
contributor.pw