DigitalOcean floating IPs are publicly-accessible static IP addresses that you can assign to Droplets and instantly remap between other Droplets in the same datacenter. Implement a failover mechanism with floating IPs to build a high availability infrastructure.
You can reassign a floating IP to point it at a different Droplet. You can also unassign it from a Droplet entirely.
To reassign or unassign a floating IP from the control panel, click Networking in the main navigation, then click Floating IPs.
This page lists your floating IPs and their assigned Droplets. Open the More menu of the floating IP you want to reassign or unassign:
From the More menu, click Unassign to unassign the floating IP entirely, or click Reassign and pick a new Droplet in the Search for a Droplet text box that opens. You can only reassign floating IPs to Droplets in the same datacenter.