Tailscale 4via6 — Connect Edge Deployments at Scale

Tailscale's 4via6 subnet routing is designed to enhance connectivity for complex edge deployments where traditional VPNs struggle, such as in scenarios involving multiple layers of NAT, restrictive network policies, and overlapping IPs. This innovative solution facilitates seamless connections across numerous identical networks without the need for managing IPs, CIDR ranges, or ports, making it ideal for applications involving fleets of robots, edge devices, or numerous VPCs. By supporting network-in-a-network approaches, 4via6 enables easy management and connectivity of deployed infrastructure like cameras, sensors, robots, and local servers, while also granting secure remote access for support teams and telemetry servers. It provides a single solution that works on any internet connection, including LTE, 5G, or satellite, and allows for the inclusion of embedded networked devices in the same mesh, offering low-latency access without complex VPN or SD-WAN setups. Moreover, 4via6's functionality extends to cloud deployments, supporting the linking of VPCs across environments and regions, thereby enhancing the reproducibility of tests and connectivity between hosted control and data planes.