network configuration HowTo - Linux / Unix Q & A from nixCraft

ifconfig Command Does Not Show IPv4 Address

in Networking last updated May 7, 2012

ifconfig command does not show IP address on my Linux based laptop computer. How do I fix this problem?

Linux Static IP Address Configuration

in Debian / Ubuntu, Linux, Networking, RedHat and Friends last updated April 23, 2011

How do I configure the Internet Protocol version 4 (IPv4) properties of a network connection with a static IP address for servers running Linux operating systems? How do I configure static IP address under Debian Linux or Redhat / RHEL / Fedora / Redhat Enterprise Linux server?

Linux Display Ethernet Bridge Name and Information

in Linux, Networking, RedHat and Friends last updated March 21, 2011

How do I display a list of bridges under Linux? How do I show info about the Ethernet bridge configuration in the Linux kernel?

Ubuntu: SIOCADDRT: File exists Error and Solution

in Networking, Ubuntu Linux last updated January 3, 2011

I‘m typing the following command under Ubuntu Linux:

route add default gw 192.168.3.2 eth0

But it is giving me out the following error:

SIOCADDRT: File exists

How do I fix this problem?

KVM Guest: Shared Physical Network Device With Host (bridging configuration)

in Linux KVM last updated November 18, 2010

The NAT based connectivity is useful for easy deployments. However I want to use full bridging, where the guest is connected directly to the LAN. How do setup and share physical network with host and rest of the LAN under Linux?