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The easiest, most secure way to use WireGuard and 2FA.
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Brad Fitzpatrick f343b496c3 wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 
Replace the UAPI text protocol-based wireguard configuration with
wireguard-go's new direct callback API (SetPeerLookupFunc,
SetPeerByIPPacketFunc, RemoveMatchingPeers, SetPrivateKey).

Instead of computing a trimmed wireguard config ahead of time upon
control plane updates and pushing it via UAPI, install callbacks so
wireguard-go creates peers on demand when packets arrive. This removes
all the LazyWG trimming machinery: idle peer tracking, activity maps,
noteRecvActivity callbacks, the KeepFullWGConfig control knob, and the
ts_omit_lazywg build tag.

For incoming packets, PeerLookupFunc answers wireguard-go's questions
about unknown public keys by looking up the peer in the full config.
For outgoing packets, PeerByIPPacketFunc (installed from
LocalBackend.lookupPeerByIP) maps destination IPs to node public keys
using the existing nodeByAddr index.

Updates tailscale/corp#12345

Change-Id: I4cba80979ac49a1231d00a01fdba5f0c2af95dd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-29 19:46:19 -07:00
.bencher bencher: add config to suppress failures on benchmark regressions. 2021-10-01 16:16:02 -07:00
.github tool/updateflakes, cmd/nardump: replace update-flake.sh with Go tool 2026-04-28 10:18:32 -07:00
appc appc,feature/conn25: prevent clients from forwarding DNS requests and 2026-04-16 09:41:54 -04:00
atomicfile all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
chirp all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
client client/web: fail /api/routes requests with empty flags (#19548) 2026-04-28 11:16:47 -07:00
clientupdate feature/clientupdate: windows update should use tailscale.exe update (#19438) 2026-04-17 10:28:35 -07:00
cmd tstest/natlab/vmtest: add TestDiscoKeyChange 2026-04-29 12:58:00 -07:00
control wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
derp derp/derpserver: fix Server.UpdateRateLimits docs 2026-04-29 14:43:12 -07:00
disco disco: remove experimental label from BindUDPRelayHandshakeState 2026-03-24 11:04:11 -07:00
docs misc: add install-git-hooks.go and git hook for Change-Id tracking 2026-04-08 15:10:53 -07:00
doctor all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
drive cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
envknob envknob/logknob: remove unused package (#19515) 2026-04-24 15:48:06 -07:00
feature wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
gokrazy go.mod, gokrazy: bump to fork of gokrazy/gokrazy init process for syslog change 2026-04-29 11:27:41 -07:00
health cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
hostinfo all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
internal cmd/tailscale/cli: allow fetching keys from AWS Parameter Store 2026-01-29 18:09:56 -05:00
ipn wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
jsondb all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
k8s-operator cmd/k8s-operator: add nodeSelector to DNSConfig resource (#19429) 2026-04-29 15:56:33 +01:00
kube cmd/containerboot,cmd/k8s-proxy,kube: add authkey renewal to k8s-proxy (#19221) 2026-04-15 16:13:46 +01:00
licenses licenses: update license notices 2026-04-27 18:38:06 -07:00
log cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
logpolicy all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
logtail logtail: run HTTP tests in-memory with memnet + synctest 2026-04-20 13:33:10 -07:00
metrics all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
misc misc/genreadme,tempfork/pkgdoc,tsnet: generate README.md files from godoc 2026-04-22 15:13:09 -07:00
net wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
omit all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
packages/deb all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
paths all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
portlist portlist: also tb.Skip benchmarks (not just tests) on bad Linux kernels 2026-02-12 13:19:09 -08:00
posture posture: add HealthTracker for serial number retrieval (#19181) 2026-04-25 15:42:47 -03:00
prober all: use Go 1.26 things, run most gofix modernizers 2026-03-06 13:32:03 -08:00
proxymap all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
release release/dist/qnap: preserve .codesigning files as build artifacts 2026-04-28 12:29:56 +01:00
safesocket safesocket, ipn/ipnserver: use PeerCreds on solaris and illumos 2026-03-23 07:45:35 -07:00
safeweb safeweb: add CSRF token helpers and set cookie path to root (#19265) 2026-04-06 12:52:36 -04:00
scripts scripts/installer.sh: handle KDE Linux (#18861) 2026-03-02 18:29:49 +00:00
sessionrecording cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
ssh/tailssh ssh/tailssh: mark TestSSHRecordingCancelsSessionsOnUploadFailure as flaky (again) 2026-04-29 14:22:09 +01:00
syncs cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
tailcfg tailcfg: extend services model for client application actions 2026-04-29 11:33:13 -07:00
tempfork misc/genreadme,tempfork/pkgdoc,tsnet: generate README.md files from godoc 2026-04-22 15:13:09 -07:00
tka tka: reduce boilerplate code in the tests 2026-04-28 16:42:48 +02:00
tool tool/updateflakes, cmd/nardump: replace update-flake.sh with Go tool 2026-04-28 10:18:32 -07:00
tsconsensus cmd/vet: add subtestnames analyzer; fix all existing violations 2026-04-05 15:52:51 -07:00
tsconst all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
tsd tsd, all: add Sys.ExtraRootCAs, plumb through TLS dial paths 2026-04-07 18:10:54 -07:00
tsnet tstest/largetailnet, tstest/integration/testcontrol: add in-process large-tailnet benchmark 2026-04-27 11:47:12 -07:00
tstest control/tsp, tstest/integration/testcontrol: deflake TestMapAgainstTestControl 2026-04-29 16:11:00 -07:00
tstime all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
tsweb all: fix six tests that failed with -count=2 2026-04-13 18:52:57 -07:00
types wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
util util/pidowner: remove unused package (#19521) 2026-04-27 09:25:46 -07:00
version version: use debug.ReadBuildInfo in CmdName on non-Windows 2026-04-24 09:48:11 -07:00
wf wf: allow limited broadcast to/from permitted interfaces when using an exit node on Windows 2026-01-23 18:30:38 -06:00
wgengine wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
wif wif: add AWS ecs for autogenerated OIDC tokens 2026-03-25 14:41:41 -06:00
words Add 'fish' to the list of scales 2026-03-27 08:41:33 +00:00
.gitattributes .: add .gitattributes entry to use Go hunk-header driver 2021-12-03 17:56:02 -08:00
.gitignore .gitignore: explicitly include tool/go.exe 2026-04-13 18:44:59 -07:00
.golangci.yml .golangci.yml: enforce gliderssh import alias via importas linter 2026-04-07 11:59:38 +01:00
.stignore Add .stignore for syncthing (#18540) 2026-01-27 16:15:17 -08:00
ALPINE.txt docker: bump alpine v3.19 -> 3.22 (#17155) 2025-09-17 20:22:24 +01:00
api.md {api.md,publicapi}: remove old API docs (#13468) 2024-09-13 14:10:33 -06:00
assert_ts_toolchain_match.go .: permit running binary built with TS_GO_NEXT=1 2026-02-23 09:37:04 -08:00
build_dist.sh build_dist.sh: keep --extra-small making a usable build, add --min 2025-10-06 21:15:25 -07:00
build_docker.sh docker: add riscv64 to container image architectures 2026-03-29 07:47:39 -07:00
cache_key_test.go tailscaleroot: add test that tsgo rev is in Go build cache keys 2026-04-13 10:17:22 -07:00
CODE_OF_CONDUCT.md CODE_OF_CONDUCT.md: update code of conduct 2025-10-28 08:58:00 -07:00
CODEOWNERS CODEOWNERS: add the start of an owners file 2023-08-16 15:57:29 -07:00
Dockerfile go.toolchain.branch: switch to Go 1.26 2026-03-04 21:57:05 -08:00
Dockerfile.base all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
flake.lock nix: update flakes to get a nixpkgs version with go 1.26 2026-03-06 04:06:57 -08:00
flake.nix wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
flakehashes.json wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
go.mod wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
go.sum wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
go.toolchain.branch go.toolchain.branch: switch to Go 1.26 2026-03-04 21:57:05 -08:00
go.toolchain.next.branch tool/gocross, pull-toolchain.sh: support a "next" Go toolchain 2026-01-27 14:07:35 -08:00
go.toolchain.next.rev go.toolchain.rev: update to Go 1.26.2 2026-04-07 17:09:56 -07:00
go.toolchain.rev go.toolchain.rev: update to Go 1.26.2 2026-04-07 17:09:56 -07:00
go.toolchain.version go.toolchain.rev: update to Go 1.26.2 2026-04-07 17:09:56 -07:00
gomod_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
header.txt all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
LICENSE all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
license_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
Makefile tool/updateflakes, cmd/nardump: replace update-flake.sh with Go tool 2026-04-28 10:18:32 -07:00
PATENTS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
pkgdoc_test.go all: fix duplicate package docs and tighten TestPackageDocs 2026-04-24 19:01:43 -07:00
pull-toolchain.sh tool/updateflakes, cmd/nardump: replace update-flake.sh with Go tool 2026-04-28 10:18:32 -07:00
README.md README: update the version of Go in the README (#19168) 2026-03-28 22:21:41 -03:00
SECURITY.md Add a SECURITY.md for vulnerability reports. 2020-02-11 10:26:41 -08:00
shell.nix wgengine, all: remove LazyWG, use wireguard-go callback API for on-demand peers 2026-04-29 19:46:19 -07:00
staticcheck.conf all: cleanup unused code, part 2 (#10670) 2023-12-21 17:40:03 -08:00
version_tailscale_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
version_test.go all: remove AUTHORS file and references to it 2026-01-23 15:49:45 -08:00
version-embed.go cmd/printdep: add --next flag to use rc Go build hash instead 2026-01-27 14:49:56 -08:00
VERSION.txt VERSION.txt: this is v1.97.0 (#18898) 2026-03-05 15:24:48 -05:00

README.md

Tailscale

https://tailscale.com

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:

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:

Legal

WireGuard is a registered trademark of Jason A. Donenfeld.