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jackos1998 a7ea91f529 docs: Document the boxes

Add a top-level `README.md` mapping the boxes and per-machine docs under
`docs/boxes/` (grouped `colony/`, `home/`, `misc/`), one file per host, VM and
container documenting role, services and networking with source pointers.

Also point `AGENTS.md` at the new docs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-14 22:45:20 +01:00

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britnet

A VPS in Birmingham (bhx1) acting as a Tailscale/WireGuard gateway node.

Source: nixos/boxes/britnet.nix
Internal domain: bhx1.int.nul.ie

Role

Tailscale node + WireGuard (wg0) gateway: provides a second egress / entry point into the boxes' overlay networks.
nftables SNATs traffic arriving on tailscale0 / wg0 out of the provider interface (veth0), using the allhost assignment addresses.

Networking

Provider uplink with gateways 77.74.199.1 (v4) / 2a12:ab46:5344::1 (v6).
tailscale0 and wg0 overlay interfaces; allhost assignment for SNAT.

britnet is a separate machine from britway — different provider/site, narrower role (gateway rather than control plane + BGP edge).