The URL does not work right now. But I tried another one from the same site.

No client can get this right, always. aria2c is not more reliable. It's just choosing to take the filename from the redirect URL. It appears to be the right thing to do in this case. But it would fail if the start URL was actually the one that had the right filename.

Hosts can use the Content-Disposition header if they want to make sure all (capable) clients get the right filename.

In saldl, I implemented `--filename-from-redirect` to handle your use-case. But It's not set by default.