Problem with network

[Andreas Ruppen]

I'm courious what's the output of the command
gengi at eragon:~$ lsmod | grep 8139

have a look at
http://www.linuxforums.org/forum/ubuntu-help/63024-internet-not-working-3.html

in short what the above page says:

if you get (lsmod command):
8139cp 22528 0
8139too 26880 0
mii 58888 2 8139cp, 8139too
then it's bad because after the description from the kernel source:
Originally Posted by 8139cp
 RealTek RTL-8139 C+ PCI Fast Ethernet Adapter support (EXPERIMENTAL)
Originally Posted by 8139too
 RealTek RTL-8129/8130/8139 PCI Fast Ethernet Adapter support
repair this si simple, just do (as sudo)

gengi at eragon:~$ sudo echo 'blacklist 8139cp' >> /etc/modprobe.d/blacklist
gengi at eragon:~$ sudo echo '8139cp' > /etc/hotplug/blacklist.d/8139cp
(doesn't matter if this fails)
gengi at eragon:~$ sudo sed -i -e 's/\(.*8139cp\)/#
\1/' /etc/modprobe.d/aliases

gengi at eragon:~$ echo 8139too >> /etc/modules

> How can I install traceroute if my network doesn't work???? that's my
> first problem until the network run I cannot install anithing... (my
> target is install a desktop distribution with GIS programs) Is possible
> install the traceroute from the installation CD?
you can download traceroute from (under $$MS$$)
http://packages.ubuntulinux.org/dapper/net/traceroute
and then install (under ubuntu) as sudo
gengi at eragon:~$ dpkg -i tracerouteXXX.dpkg

> DSL router is a hardware router with firewall who protect the local LAN
> from internet
try disabling the firewall on the router and do the ping tests again

you can also google for your network card:
http://www.google.com/search?hl=xx-hacker&q=ubuntu+%22Realtek+RTL-8139%22&ie=UTF-8&oe=UTF-8