# loss-harness A **FEC loss-resilience sweep** for [`punktfunk-core`](../../crates/punktfunk-core/README.md). It drives access units through the in-process loopback at increasing packet-loss rates — for **both** FEC schemes (GF(2⁸) and GF(2¹⁶)) — and reports how many frames survive. It's a pure-software stand-in for `tc netem`: no network, no root, runs anywhere `punktfunk-core` builds. Use it to sanity-check the FEC before reaching for the real `punktfunk/1` harness (which adds `tc netem` jitter/reorder on the UDP path). ```sh cargo run -p loss-harness # from the repo root ``` Part of the measurement tooling (design/implementation-plan §10), alongside [`latency-probe`](../latency-probe/README.md).