Floating IP reassignment and connection handling during same-datacenter Droplet migration
The goal is to migrate a small application to a replacement Droplet in the same DigitalOcean datacenter by moving a Floating IP, avoiding DNS propagation and user-facing downtime. The reassignment is a control-plane action. Existing TCP connections to the original Droplet are dropped rather than gracefully drained, and Floating IPs do not fail over automatic