Looking for contributors to TunnelScope: Python MTU diagnostics with good first issues

Doğukan Sağlık — Wed, 28 Oct 2026 22:34:29 +0000

I'm building TunnelScope, an MIT-licensed Python CLI for evidence-based MTU and packet-size experiments on Linux.

It runs bounded UDP probes with a cooperating receiver, keeps sender and receiver observations in JSON, and can generate a self-contained HTML report. v0.4.1 is available on PyPI.

TunnelScope is still an alpha tool: a timeout is inconclusive, and the tool does not automatically discover an exact path MTU or prove a root cause. Its probe protocol is unauthenticated, so experiments belong in controlled labs rather than public networks.

Good first issues

Add Python 3.10 to CI checks — a small GitHub Actions change.
Show receiver correlation in the README quick start — help new users understand what reached the receiver.
Document a Windows PowerShell loopback quick start — a documentation task for basic local testing.

If you have a suitable lab, IPv6 routed-path, VPN, and Kubernetes validation would also be valuable. Sanitized results and documentation feedback are welcome; please don't share credentials or private packet captures.

Start with the README and contribution guide. If a task interests you, leave a comment on its issue before opening a PR. I'm happy to answer questions and review contributions.

DEV Community: Doğukan Sağlık

Looking for contributors to TunnelScope: Python MTU diagnostics with good first issues

Good first issues