This document explains how to set a static IP address on an Ethernet interface using `nmcli`, assuming you are connected to the machine via SSH.

• The network interface is 'enp2s0'
• The desired static IP is '192.168.0.31'
• The default gateway is '192.168.0.1'
• DNS servers will be '8.8.8.8' and '1.1.1.1'

sudo nmcli con add type ethernet ifname enp2s0 con-name static-ip autoconnect no ip4 192.168.0.31/24 gw4 192.168.0.1

sudo nmcli con mod static-ip ipv4.dns "8.8.8.8 1.1.1.1"

Note: This may temporarily disconnect the SSH session. Reconnect using the static IP:

sudo nmcli con up static-ip

Once confirmed that the static IP connection works:

sudo nmcli con delete "Wired connection 1"

sudo nmcli con mod static-ip connection.autoconnect yes

nmcli con show
ip addr show enp2s0

The machine will use the static IP '192.168.0.31' permanently, even after reboots, without relying on DHCP.