Arch Linux defaults to DHCP on a new install. This guide will walk you through the steps need to configure a static IP interface for your Arch Linux install.
1. Create the interface config file in “/etc/netctl/”. Either use the sample file in “/etc/netctl/examples/” as a base or create one from scratch. We’ll create a new file for this walkthrough.
#cd /etc/netctl
#vi eth0
The lines below go into the file.
Description='eth0'
Interface=eth0
Connection=ethernet
IP=static
Address='192.168.1.201/24'
Gateway='192.168.1.1'
DNS='192.168.1.40'
Broadcast='192.168.1.255'
2. Enable the new interface.#netctl enable eth0
3. Start the new interface or reboot.#netctl start eth0
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