Netplan

• Ethernet (Dynamic IP)

  network:
      version: 2
      ethernets:
          eth0:
              dhcp4: true
              optional: true
  

• Ethernet (Static IP)

  network:
      version: 2
      ethernets:
          eth0:
              dhcp4: no
              addresses: [xxx.xxx.xxx.xxx/yy]
              gateway4: zzz.zzz.zzz.zzz
              nameservers:
                  addresses: [aaa, bbb]
              optional: true
  

• Wi-Fi (Dynamic)

  network:
      version: 2
      wifis:
          wlan0:
              optional: true
              access-points:
                  "xxxxx":
                      password: "yyyyy"
              dhcp4: true