backup of external proxy

[Fred MAISON]

Hello,

When proxing some eap-type by real to an external radius, is it possible
to configure a normal and a backup proxy server ?

I saw (in proxy.conf comments) it was possible when proxying to a local
virtual server, but I don't understand what to do for normal/backup
externals radius we have to proxy to for a particular real.

Best regards,
Fred MAISON