Chapter 9. Network Configuration
Use this screen to customize the network settings of your Fedora
Manual network configuration of a Fedora system is often not
required. Many networks have a DHCP (Dynamic Host Configuration
Protocol) service that automatically supplies connected systems with
configuration data. By default, Fedora activates all network
interfaces on your computer and configures them to use DHCP.
Many home Internet routers and firewalls do not include
support for IPv6. The default settings will not harm your system or
router in any way. However, the speed of some services improves
drastically if you disable IPv6 on any interface on a network that
does not use IPv6.
Fedora displays a list of network interfaces detected on your
computer. Each interface must have a unique IP
address on the network to which it is attached. The
interface may receive this address from the network DHCP service.
Specify whether an interface should be automatically activated at
boot time with the Active on Boot check box
for that device. You may manually activate a network interface at
any time after the system has booted.
The Network Configuration screen does not
list modems. Configure these devices after installation
with the Network utility. The
settings for your modem are specific to your particular Internet
Service Provider (ISP).
9.1.1. Configuring IPv4 and IPv6 Support
To add or remove IPv4 or IPv6 support, highlight the
interface on the Network Device list and
select . Fedora displays the
Edit Interface dialog. If the interface is
not configured for IPv4 or IPv6 protocol, that entry is marked
To change the selection, select or deselect the appropriate
checkbox. If necessary, change the network address
configuration for the interface.
||DHCP and Servers
If this computer system is a server, avoid DHCP if possible,
and manually configure networking. Manual network
configuration allows your server to join the local network
even if the DHCP provider is down.
To assign an unchanging, or static, IP
address to your system, highlight the interface on the
Network Device list and select
. Fedora then displays the
Edit Interface dialog.
Deselect the Configure using
DHCP check box, so that it is empty. Enter the
IP Address and the appropriate
Netmask for the interface, then select
If you disable DHCP, automatic configuration of the
Hostname is also disabled, and the
Miscellaneous Settings options are enabled.
Refer to Section 9.3, “Miscellaneous Settings” for more
If IPv6 is enabled, the installation program defaults to
using Automatic neighbor discovery. If you
want to change the default, select either
DHCPv6 for IPv6-compliant dynamic IP
addressing, or Manual configuration to
enter IP information manually.
To assign a static IPv6 address, enter the IP
Address and the appropriate
Prefix for the interface, then select