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Static IP address configuration

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Configure Static IP Address on Ubuntu with Netplan

· 8 min read
Guangze Yang
Guangze Yang
Master of Control System, Ibaraki University

This comprehensive guide explains how to configure a static IP address on Ubuntu using the netplan configuration system. Setting a static IP is essential for servers, network devices, or any system that requires a consistent network address for reliable connectivity.

Overview​

Static IP addresses provide several advantages over dynamic IP assignment:

  • Consistent Network Identity: Same IP address after reboots and network changes
  • Server Applications: Essential for hosting services that clients need to find
  • Network Management: Easier to manage firewall rules and network policies
  • Remote Access: Reliable SSH and remote desktop connections
  • Port Forwarding: Stable configuration for router port forwarding rules

Prerequisites​

  • Ubuntu system with network connectivity
  • Administrative (sudo) privileges
  • Basic understanding of network concepts (IP, subnet, gateway)
  • Access to your network's configuration details

Understanding Netplan​

Ubuntu uses netplan as the default network configuration system since Ubuntu 18.04. Netplan:

  • Uses YAML configuration files for network settings
  • Supports both NetworkManager and systemd-networkd as backends
  • Provides a unified configuration approach across Ubuntu systems
  • Validates configuration before applying changes