Automatic Return Routing for Overlapping IP Addresses
🔁 Automatic Return Routing (ARR) is a new Cloudflare One feature, released in Closed Beta, that resolves private IP address overlap by tracking flows and returning traffic to the exact tunnel that originated the conversation. Instead of depending on routing-table lookups, ARR uses stateful flow memory to record the originating tunnel and enforce symmetric returns. This approach minimizes the need for VRF or NAT, reducing operational overhead for mergers, extranets, and uniform branch deployments while integrating with Unified Routing and the Apollo userspace hub.
