dai malko info s kwa OS si i kakaw pppoe-server polzwash.
ste ti dam nagleden primer s rp-pppoe i slackware linux:

otiwash w /etc/ppp
i w pppoe-server-options slagash slednoto:
# PPP options for the PPPoE server
# LIC: GPL
lock
local
require-chap
default-mru
default-asyncmap
proxyarp
ktune
login
lcp-echo-interval 20
lcp-echo-failure 2
ms-dns 1.2.3.4 #dns-a za clientite ti, mojesh da slojish nqkolko takiwa linii
obsdcomp
noccp
noendpoint
noipdefault
noipx
novj
receive-all

sled towa si prawish chap-secrets
chmod 600 chap-secrets
i tam slagash slednoto:
### IDENTIFICATION SETTINGS ###
# username server password ip_addr
user * pass 10.0.0.2

i nakraq w rc.local slagash:
killall -w -9 pppoe-server
/usr/sbin/pppoe-server -I eth1 -L 10.0.0.1 -R 10.0.0.2 (razgledai man za da razberesh za kakwo sa tezi opcii)

towa e lesno i prosto.

ako pak iskash mojesh da se testwash da naprawish authentication prez radius, koito we4e ima i web interface za controlirane.
az li4no probwah s freeradius oba4e nesto ne uspqh da go podkaram kakto trqbwa i za towa si polzwam warianta koito ti predlojish po-gore
uspeh
123

P.S. mnogo wajno e da setnesh null address na eth interface-a na koito ste puskash pppoe-server-a, ina4e samo ste se 4udish sto ne raboti :) hint: ifconfig eth0 0.0.0.0 up