Hello,
This is a community forum and we rely on the information you give to be able to help you. So the more info you can provide, the better is the chance of getting help.
Please take a look at the post that I have linked to in my signature for some tips on what information to include.
The Package: pppoeconf (1.19ubuntu1)
http://packages.ubuntu.com/lucid/pppoeconfcreates pppoe connections via an Bridged router like an Bridged DSL router. This will enable an direct IP number and all open ports bypassing all NAT ant other functionality of the Gateway - possibly NAT 'ed routing.
The link it create looks like this
ppp0 Link encap:Point-to-Point Protocol
inet addr:41.222.122.222 P-t-P:41.222.122.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:1350943 errors:0 dropped:0 overruns:0 frame:0
TX packets:1573496 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:744630204 (744.6 MB) TX bytes:1203528565 (1.2 GB)
It can be started automatically by the lines appending to your /etc/network/interfaces config file
...
auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
provider dsl-provider
...
All other functionality and configuration is found in /etc/ppp specifically under /etc/ppp/peers is the file called /etc/ppp/peers/dsl-provider that contain the specific settings for the rp-pppoe.so plugin.
to install require only the command
sudo aptitude pppoeconf
followed by
sudo pppoeconf
In the end of this all ebox simply delete the functionality from the /etc/network/interfaces file and provide no alternative to do the same via the interface or otherwise! If you can provide the solution of HOW to create an DSL dialup / other ppp connections using ebox I will be thankfull because that is an Awesome way to create an failover via 3G device and or dsl over pppoe when the normal internet connection fails. Other reasons also exist.
P.S. A good understanding require half a word