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+====== Static network IP on Ubuntu server ======
+Configuring IP address on Ubuntu server without using any tools other than a text editor
+====== Version 18.04 ======
+The new interfaces configuration file now lives in the /etc/netplan directory. There are two renderers: NetworkManager and networkd.
+**NetworkManager** renderer is mostly used on desktop computers and **networkd** on servers. If you want NetworkManager to control the network interfaces, use NetworkManager as the renderer, otherwise use networkd.
+When you use NetworkManager as the renderer, you will use the NetworkManager GUI to manage the interfaces.
+<code javascript DHCP sample file using networkd>
+# This file describes the network interfaces available on your system
+# For more information, see netplan(5).
+network:
+ version: 2
+ renderer: networkd
+ ethernets:
+   ens33:
+     dhcp4: yes
+     dhcp6: yes
+</code>
+<code ini Static configuration>
+# This file describes the network interfaces available on your system
+# For more information, see netplan(5).
+network:
+ version: 2
+ renderer: networkd
+ ethernets:
+   ens33:
+     dhcp4: no
+     dhcp6: no
+     addresses: [192.168.1.2/24]
+     gateway4: 192.168.1.1
+     nameservers:
+       addresses: [8.8.8.8,8.8.4.4]
+</code>
+<code bash Apply changes>sudo netplan apply</code>
+===== Examples =====
+<code javascript Multiple IP addresses and multiple gateways>
+network:
+  version: 2
+  renderer: networkd
+  ethernets:
+    enp3s0:
+     addresses:
+       - 9.0.0.9/24
+       - 10.0.0.10/24
+       - 11.0.0.11/24
+     #gateway4:    # unset, since we configure routes below
+     routes:
+       - to: 0.0.0.0/0
+         via: 9.0.0.1
+         metric: 100
+       - to: 0.0.0.0/0
+         via: 10.0.0.1
+         metric: 100
+       - to: 0.0.0.0/0
+         via: 11.0.0.1
+         metric: 100
+</code>
+<code javascript Wireless>
+network:
+  version: 2
+  renderer: networkd
+  wifis:
+    wlp2s0b1:
+      dhcp4: no
+      dhcp6: no
+      addresses: [192.168.0.21/24]
+      gateway4: 192.168.0.1
+      nameservers:
+        addresses: [192.168.0.1, 8.8.8.8]
+      access-points:
+        "network_ssid_name":
+          password: "**********"
+</code>
+<code javascript Static>
+network:
+  version: 2
+  renderer: networkd
+  ethernets:
+    enp3s0:
+      addresses:
+        - 10.10.10.2/24
+      gateway4: 10.10.10.1
+      nameservers:
+          search: [mydomain, otherdomain]
+          addresses: [10.10.10.1, 1.1.1.1]
+</code>
+====== Version 16.04 and earlier ======
+Edit network configuration file
+<code>sudo vim /etc/network/interfaces</code>
+You fill find configuration something like this
+<code>
+# The primary network interface -- use DHCP to find our address
+auto eth0
+iface eth0 inet dhcp
+</code>
+Change it to this
+<code>
+# The primary network interface
+auto eth0
+iface eth0 inet static
+address 192.168.1.2
+gateway 192.168.1.1
+netmask 255.255.255.0
+network 192.168.1.0
+broadcast 192.168.1.255
+dns-nameservers 8.8.8.8 8.8.4.4
+</code>
+And finally restart networking service
+<code>sudo /etc/init.d/networking restart</code>
+You should be able to ping the host on the new IP address
+If you need to add static routes, you can do it here by adding the lines
+<code>up route add -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.180.1 dev eth0</code>
+And delete them
+<code>down route del -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.180.1 dev eth0</code>