# PPPoE Server
echo 1 > /proc/sys/net/ipv4/ip_forward
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#install method1
apt-get install ppp pppoe
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#Install method2
sudo apt-get install ppp
wget https://dianne.skoll.ca/projects/rp-pppoe/download/rp-pppoe-3.13.tar.gz
tar zxvf rp-pppoe-3.13.tar.gz
cd rp-pppoe-3.13/src
./configure
make
sudo make install
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vim /etc/ppp/pppoe-server-options
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# start
pppoe-server -I eno4 -L 192.168.100.1 -R 192.168.100.100 -N 100
# stop
sudo killall pppoe-server