ifconfig

Syntax

ifconfig[-c [name]][-l[name]]

ifconfig[-s name dhcp|[static IPaddress mask gateway]|permanent]

Description

Modifies the default IP address of the UEFI IPv4 network stack.

Options

-c: Clears the configuration.
-l: Lists the configuration.
-s: Sets the configuration.
name: Specifies an adapter name. For example, eth0.
dhcp: Specifies that DHCP4 is to dynamically request IPv4 addresses for all or a specific interface.
static IPaddress: Specifies a static IPv4 address in four integer values, each between 0 and 255, separated by periods.
mask: Specifies a subnet mask in four integer values, each between 0 and 255, separated by periods.
gateway: Specifies a default gateway in four integer values, each between 0 and 255, separated by periods.
permanent: Specifies that the configuration is permanent (not one-time only).

Usage

IMPORTANT:

You do not need to use ifconfig on a network interface if you plan to run webclient or ftp over the same interface because these interface and IP address settings are automatically selected by the Pre-Boot Network Settings configured in the System Utilities.

If the interface used by ftp and webclient happens to be configured by ifconfig, that setting is erased and, instead, the System Utilities Pre-Boot Network Settings menu is applied on the interface when the commands are run.

You can use this command to configure host networks for pre-boot network access from the Shell. The –c option clears the configuration for all or a specified interface, causing the network stack for related interfaces to default back to DHCP. If permanent is not specified, the configuration is one-time only. If permanent is specified, the configuration survives a network stack reload.

Examples

To list the configuration for the eth0 interface:

fso:\> ifconfig -l eth0

To use DHCP4 to dynamically request the IPv4 address configuration for the eth0 interface:

fso:\> ifconfig -s eth0 dhcp

To use the static IPv4 address configuration for the eth0 interface, and to set this configuration to survive a network reload:

fso:\> ifconfig -s eth0 static 192.168.0.5 255.255.255.0 192.168.0.1 permanent