We’re releasing a set of changes that builds on the foundation of our earlier WireGuard performance work, significantly improving UDP throughput on Linux. As with the previous work, we intend to upstream these changes to WireGuard. Our changes improve throughput for HTTP/3, QUIC, and other UDP-based applications through the use of segmentation offloads. UDP throughput over Tailscale increases 4x on bare metal Linux, and pushes past (for now) the in-kernel WireGuard implementation on that hardware. You can experience these improvements in Tailscale v1.54.