Migration ZeroTier → Tailscale: URLs .talloires.local, ajout doc réseau (dnsmasq, cloudflared, AdGuard DoH)

docs/config/network.md

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+# Architecture Réseau
+
+## Vue d'ensemble
+
+Tous les appareils Tailscale utilisent Talloires comme serveur DNS.
+
+- `go` et `*.talloires.local` → résolus localement par dnsmasq
+- Autres requêtes → cloudflared → AdGuard DoH (filtrage pub/tracking)
+
+## Composants
+
+### Tailscale
+
+VPN mesh reliant tous les appareils.
+
+| Machine | IP Tailscale | OS |
+|---------|--------------|-----|
+| talloires | 100.116.198.105 | Raspberry Pi 5 (Debian) |
+| annecy | 100.118.210.128 | Synology DS620slim |
+| olympou | 100.125.242.58 | macOS |
+| pentamodi | 100.78.237.78 | iOS |
+| perce | 100.69.7.78 | tvOS (Apple TV) |
+
+**Tailnet:** tailfd281f.ts.net
+
+### dnsmasq
+
+Serveur DNS local sur Talloires.
+
+**Config:** `/etc/dnsmasq.d/tailscale.conf`
+
+```ini
+address=/.talloires.tailfd281f.ts.net/100.116.198.105
+address=/.talloires.local/100.116.198.105
+address=/go/100.116.198.105
+listen-address=127.0.0.1,100.116.198.105
+bind-dynamic
+server=127.0.0.1#5053
+no-resolv
+```
+
+**Commandes:**
+
+```bash
+sudo systemctl status dnsmasq
+sudo systemctl restart dnsmasq
+sudo journalctl -u dnsmasq -f
+```
+
+### cloudflared
+
+Proxy DNS-over-HTTPS vers AdGuard DNS.
+
+**Config:** `/etc/cloudflared/config.yml`
+
+**Commandes:**
+
+```bash
+sudo systemctl status cloudflared-dns
+sudo systemctl restart cloudflared-dns
+sudo journalctl -u cloudflared-dns -f
+```
+
+## Configuration Tailscale Admin
+
+Dans Tailscale Admin Console, DNS, Nameservers :
+
+- **Global nameserver:** 100.116.198.105 (Talloires)
+- **Override local DNS:** activé
+
+## Domaines
+
+| Domaine | Usage |
+|---------|-------|
+| `*.talloires.local` | Services sur Talloires (recommandé) |
+| `go` | Raccourcis Shlink |
+
+## Dépannage
+
+### Test résolution DNS
+
+```bash
+nslookup go 100.116.198.105
+nslookup docs.talloires.local 100.116.198.105
+nslookup google.com 100.116.198.105
+```
+
+### Cache DNS macOS
+
+```bash
+sudo dscacheutil -flushcache && sudo killall -HUP mDNSResponder
+```