How Tailscale Peer Relays saved my holiday: a 12.5X performance boost from India

During a holiday visit to India, an engineer experienced significant networking challenges when trying to access his North American homelab infrastructure due to reliance on Tailscale's DERP relay servers, which are optimized for availability but not for high throughput. These issues were compounded by the widespread use of CGNAT and symmetric NAT among Indian ISPs, which hindered direct peer-to-peer connections. Tailscale's Peer Relays, introduced in late 2025, provided a solution by allowing users to designate their own nodes as dedicated traffic relays, bypassing the shared infrastructure of DERP and offering full control over bandwidth. The engineer implemented a peer relay in his homelab, resulting in a dramatic 12.5x performance improvement, stabilizing throughput at 27-35 Mbits/sec and significantly reducing latency. This setup not only resolved the connectivity issues but also transformed the previously sluggish and unreliable remote access into a productive experience, illustrating the potential of peer relays for users facing similar network constraints.