Proxy

I have a weather station which loads data via ftp to http://www.fjellbergskardet.no/yr/

New website at http://fjellbergskardet.netlify.com/

When I point the DNS records for the domain at the netlify servers I need to proxy requests to /yr/ from the netlify site to the old servers (www.fjellbergskardet.no/yr)
Like this: https://www.netlify.com/docs/redirects#proxying

I have done this. Problem: It goes in a loop.

Solutions?

Regards Tor