PPPOEd is another PPP-over-Ethernet implementation. It splits functionality between kernel and user space and includes a user space program, pppoed, for discovery and connection management.
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This version is a fork from 0.3 since it uses the new major/minor numbers. It is not compatible with version 0.3 because it will be looking for a different device identifier; you will need to delete your /dev/pppox* devices and use the new pppoed.c instead. You can now build the driver as a module.
An install script (just type "./Install_pppoe" at the top directory), and abstraction of the module out of the kernel. For people who know what they are doing, the kernel patch and instructions are still there.