Routing PPP interface packets through ethernet


I am using ACSIP AI7688H and doing an IOT device. I have done routing of Wi-Fi network through ethernet (Device connected to my wifi access point. and ethernet connected to my laptop. Then I could browse net). Now I want to do routing PPP interface through ethernet. PPP is already implemented as I have a on-board modem connected with my device. Can anyone help?

with what ?

look at this syntax [HELP] Configuring OpenVSwitch in LEDE - #4 by guicapanema