WireGuard is simple over a single link, but hand-building a multi-node mesh quickly turns into a tangle of keys and routes. Patterns that work, when pure WireGuard earns its keep, and when it is worth leaning on Tailscale or Headscale instead.
Headscale is an open-source reimplementation of Tailscale's control plane, so official Tailscale clients connect to it unmodified. Version 0.25.1 stabilises HuJSON ACLs, advertised routes, and DNS across large meshes. Running it takes a Go binary, SQLite or PostgreSQL, and a reverse proxy terminating TLS. SSO, Funnel, and analytics remain better commercially.
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