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Add IP to Node Firewall

Introduction

If you need to add a reserved IP to a node (for example, on a firewall node), follow this runbook.


Step 1: Check Node Interfaces

List the network interfaces on the node:

ip -br a

The device name is usually something like ens192.


Step 2: Add the IP Address

Add the reserved IP to the correct interface:

ip addr add <IP> dev <device-name>

Step 3: Verify Connectivity

Confirm the IP is reachable by pinging it:

ping <IP>