This article covers the basic overview of IP addresses, their types, and the contrast between the IPv4 and IPv6 protocols.

This article covers method to set up a static IP address on Ubuntu 20.04. Basically, in most network configurations, the IP address is assigned dynamically by the router DHCP server. 

The recommended way to assign a static IP address to a device on your LAN is to configure a Static DHCP on your router. Static DHCP or DHCP reservation is a feature found on most routers which makes the DHCP server to automatically assign the same IP address to a specific network device, each time the device requests an address from the DHCP server. This works by assigning a static IP to the device's unique MAC address.

To Get the name of network interface and the default gateway in Linux:

You can either use ip command or the network manager CLI like this:

$ nmcli d