This is an algorithm(C/Linux) to generate the real username during PPPoE. I disassembled the code the Android version , modified it to run the algorithm on OpenWRT.

Openwrt-NetKeeper-master
........................\.gitignore
........................\README.md
........................\mdassets
........................\........\hownetkeeperwork.png
........................\src
........................\...\DaoNet
........................\...\......\DaoNet
........................\...\......\......\Makefile
........................\...\......\......\frame.c
........................\...\......\......\frame.h
........................\...\......\......\main.c
........................\...\......\......\netkeeper.c
........................\...\......\......\netkeeper.h
........................\...\......\......\netutils.c
........................\...\......\......\netutils.h
........................\...\confnetwork.sh
........................\...\hainan_sxplugin.c
........................\...\makefile
........................\...\md5.h
........................\...\onekeyrun.sh
........................\...\patchlevel.h
........................\...\pppd.h
........................\...\sxplugin.c

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