Brad Fitzpatrick
f289f7e77c
Verifies that site-to-site Tailscale subnet routing with --snat-subnet-routes=false preserves the original source IP end-to-end. Topology: two sites, each with a Linux subnet router on a NATted WAN plus an internal LAN, and a non-Tailscale backend on each LAN. Backends are given static routes pointing to their local subnet router for the remote site's prefix; an HTTP GET from backend-a to backend-b over Tailscale returns a body containing backend-a's LAN IP. Adds the supporting vmtest.SNATSubnetRoutes NodeOption and plumbs snat-subnet-routes through TTA's /up handler. The webserver started by vmtest.WebServer now also echoes the remote IP, for the preservation assertion. Adds a /add-route TTA endpoint (Linux-only for now) and a vmtest Env.AddRoute helper so the test can install the backend static routes through TTA rather than needing a host SSH key and debug NIC. ensureGokrazy now always rebuilds the natlab qcow2 (once per test process, via sync.Once) so the test picks up the new TTA and webserver behavior. This is pulled out of a larger pending change that adds FreeBSD site-to-site subnet routing support; figured we should have at least the Linux test covering what works today. Updates #5573 Change-Id: I881c55b0f118ac9094546b5fbe68dddf179bb042 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.
Other clients
The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.26. (While we build releases with our Go fork, its use is not required.)
go install tailscale.com/cmd/tailscale{,d}
If you're packaging Tailscale for distribution, use build_dist.sh
instead, to burn commit IDs and version info into the binaries:
./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled
If your distro has conventions that preclude the use of
build_dist.sh, please do the equivalent of what it does in your
distro's way, so that bug reports contain useful version information.
Bugs
Please file any issues about this code or the hosted service on the issue tracker.
Contributing
PRs welcome! But please file bugs. Commit messages should reference bugs.
We require Developer Certificate of
Origin
Signed-off-by lines in commits.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.