Make a PPPTP-Client from other PPPoE-Client

Hello everyone
I have two PPPoE-Client one of them has default route and I like to make PPTP-client through other PPPoE-client. this PPPoE-Client has not default route
What can I do that.

My pptp-client has connect via first pppoeclinet…!!! I want to use the other pppoe-clinet to connect pptp-client

Please advise me

Thank you