I've just noticed something.... strange?

I manage this mirror: https://archlinux.org/mirrors/librelabucm.org/

And I've just noticed that this other mirror: https://archlinux.org/mirrors/mirrors.marquitos.space/

Is actually just a reverse proxy to ours.

We are sure about this:

* If I temporarily create a file in our mirror folder, it is also shown on their end, instantly

* Every time I go to "https://mirrors.marquitos.space/archlinux/", I see in our server logs a request coming from the same IP as the one "mirrors.marquitos.space" resolves to.

We've seen that aprox 1/10 of the requests we are receiving in our mirror come from this IP.

I've added a temporary rule to enable their IP in our firewall, so they are not blocked, so if someone is using their mirror, it's still working. 

I found his email address online, so I'm going to send him an email to ask him about it.

So.....

* Was there any official request to add that mirror to the list?

     https://archlinux.org/mirrorlist/all/

* Is there any reason/benefit to offering a mirror as a reverse proxy to other mirror?

     (I've checked, they are not caching files)

Thank you,

Pablo