Any example of this ?

Under PPP in documentation :
routes (text) - routes that appear on the server when the client is connected. The route format is: dst-address gateway metric (for example, 10.1.0.0/ 24 10.0.0.1 1). Several routes may be specified separated with commas

I want to assign public IPs to customers but all my hops till customers are in private IPs. Im doing PPPoE to auth customers. Am I looking at the above thing or something else I have to consider ?

yes, this is essentially the sort of framed-route for blocks of ip’s that your provider would normally give you on a business adsl connection.

Proxy-Arp ?