System Administration Guide: Resource Management and Network Services

pppoe.so Plugin

pppoe.so is the PPPoE shared object that must be loaded by PPPoE to provide PPPoE capability to access servers and clients. This shared object limits MTU and MRU to 1492, filters packets from the driver, and handles runtime PPPoE messages.

On the client side, pppd loads pppoe.so when the user specifies the plugin pppoe.so option.