Administrators on commonswiki have the right to upload flickr files by URL. Nevertheless this is limited to '*flickr.com'-files. See also Gerrit change #34357 (and possibly Gerrit change #25605 )
Allowing other domains would make it possible for administrators to transfer files directly from other sources to commonswiki. (No need to fiddle with download/upload/large file size ...)
Version: wmf-deployment
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=63961