When Every Network is 192.168.1.x
Summary
The article tackles the recurring problem of overlapping private subnets across many customer sites and proposes an overlay addressing approach using WireGuard and 1:1 NAT to create unique overlay addresses per device. It explains why port forwarding, simple routing, and re-addressing fail at scale, presents a production-ready deployment pattern, and outlines the orchestration challenges and security benefits of an overlay network that keeps local IPs private.