ubuntu8.10能过sudo pppoeconf设置pppoe后还是不能上网，用plog查看后如下

[liuyeshaonian]

pppd[4436] connect:ppp0<-->eth0
pppd[4436] CHAP authentication failed userName_Err
pppd[4436] authentication failed
pppd[4436] connection terninated
pppd[4436] ppp sessionis 10442
pppd[4436] Using interface ppp0

[mjp123]

似乎是用户名错，检查一下