Network configuration on ubuntu

Netplan on Ubuntu is a network configuration tool introduced in Ubuntu 17.10 (Artful Aardvark) and widely used in subsequent versions. It simplifies network setup by allowing administrators to define network interfaces and their configurations in YAML files, which are then applied to the system using a backend renderer (such as systemd-networkd or NetworkManager).

sudo vi /etc/netplan/50-cloud-init.yaml

network:
  version: 2
  # networkd is for server environments with static/fixed configurations.
  # NetworkManager is for for desktop/laptop environments with dynamic networks (e.g., Wi-Fi, VPNs).
  renderer: networkd
  ethernets:
    # ip link show
    enp0s5:
      dhcp4: no
      # static addresses
      addresses:
        - 10.211.55.100/24
      # gateway
      routes:
        - to: default
        - via: 10.211.55.1
      # dns
      nameservers:
        addresses:
         - 8.8.8.8

sudo netplan try
sudo netplan apply