Titulo: Network wireless USB Adapter Edimax EW-7711UMn
Contenido: For Karmic (ubuntu 9.10), add "blacklist rt2800usb" to /etc/modprobe.d/blacklist.conf and reboot system

https://help.ubuntu.com/community/HardwareSupportComponentsWirelessNetworkCardsEdimax

Titulo: Network-manager resolv.conf
Contenido: It is really simple. Edit /etc/dhcp3/dhclient.conf and add the following line in there:

prepend domain-name "unibe.ch";

Titulo: Networking Configuration Using Command Line
Contenido: disable NetworkManager permenently
----------------------------------
$ sudo update-rc.d NetworkManager remove

That will take it out of the system startup. If you truly want to remove it you can
$ sudo apt-get remove NetworkManager


Configuring Static IP address for your network card
---------------------------------------------------
eth0 renamed to eth1, eth2, eth3, ... in domU


Evidently the gutsy domU, noticing that eth0 had a different MAC address than the "saved eth0 MAC address", assigns a brand new eth# and saves the MAC address with the new interface number.

Solution:

1. Edit /etc/udev/rules.d/70-persistent-net.rules in the domU.
2. Remove dynamically generated lines.
3. Add:

SUBSYSTEM=="net", DRIVERS=="vif", ATTRS{nodename}=="device/vif/0", NAME="eth0"

4. Shut down the domU and restart it.


If you want to configure Static IP address you need to edit the /etc/network/interfaces and you need to enter the following lines replace eth0 with your network interface card

sudo vi /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.3.90
gateway 192.168.3.1
netmask 255.255.255.0
network 192.168.3.0
broadcast 192.168.3.255

After entering all the details you need to restart networking services using the following command

sudo /etc/init.d/networking restart

if you don't see lo in ifconfig do:

# ifup lo

Setting up Second IP address or Virtual IP address in Ubuntu

If you are a server system administrator or normal user some time you need to assign a second ipaddress to your Ubuntu machine.For this you need to edit the /etc/network/interfaces file and you need to add the following syntax.Below one is the only example you need to chnage according to your ip address settings

sudo vi /etc/network/interfaces

auto eth0:1
iface eth0:1 inet static
address 192.168.1.60
netmask 255.255.255.0
network x.x.x.x
broadcast x.x.x.x
gateway x.x.x.x

You need to enter all the details like address,netmask,network,broadcast and gateways values after entering all the values save this file and you need to restart networking services in debian using the following command to take effect of our new ipaddress.

After entering all the details you need to restart networking services using the following command

sudo /etc/init.d/networking restart

Setting your ubuntu stytem hostname

Setting up your hostname upon a ubuntu installation is very straightforward. You can directly query, or set, the hostname with the hostname command.

As an user you can see your current hostname with

sudo /bin/hostname

Example

To set the hostname directly you can become root and run

sudo /bin/hostname newname

When your system boots it will automatically read the hostname from the file /etc/hostname

If you want to know more about how to setup host name check here

Setting up DNS

When it comes to DNS setup Ubuntu doesn’t differ from other distributions. You can add hostname and IP addresses to the file /etc/hosts for static lookups.

To cause your machine to consult with a particular server for name lookups you simply add their addresses to /etc/resolv.conf.

For example a machine which should perform lookups from the DNS server at IP address 192.168.3.2 would have a resolv.conf file looking like this

sudo vi /etc/resolv.conf

enter the following details

search test.com
nameserver 192.168.3.2

Titulo: Netzwerkkarte Volition unter linux
Contenido: In /etc/modules.conf

alias eth0 tulip
post-install tulip mii-tool -v -F 100baseTx-FD eth0