technitium-split-dns

Bootstrap and operate Technitium for LAN split-horizon DNS: primary zones, forwarders, optional catalog secondary, client DHCP/DNAT, diagnose public CF vs…

Skill by giovannirco

IndexedMIT★ 1

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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Bootstrap and operate Technitium for LAN split-horizon DNS: primary zones, forwarders, optional catalog secondary, client DHCP/DNAT, diagnose public CF vs private Gateway VIP. Triggers: /technitium-split-dns, split-DNS, Technitium, dig returns Cloudflare, DNS_PROBE_POSSIBLE, catalog zone.

Use cases: cloud

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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codeload.github.com · found in install command

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~/.claude/skills/technitium-split-dns

What's inside

Skill name: technitium-split-dns
Description: Bootstrap and operate Technitium for LAN split-horizon DNS: primary zones, forwarders, optional catalog secondary, client DHCP/DNAT, diagnose public CF vs private Gateway VIP. Triggers: /technitium-split-dns, split-DNS, Technitium, dig returns Cloudflare, DNS_PROBE_POSSIBLE, catalog zone.
License: MIT
Instructions: 37 lines in SKILL.md · view on GitHub

Files (1)

SKILL.md

SKILL.md (first lines)

# Technitium split-DNS

Full guide: `docs/setup/11-technitium-split-dns.md`.

## Goal

LAN: `app.example.com` → **INTERNAL_GW_VIP**.  
WAN: same name → Cloudflare/tunnel.

## Bootstrap order

1. Static IP VM/LXC for Technitium on Proxmox  
2. Install Technitium; set admin + API  
3. Explicit **forwarders** (1.1.1.1 / 1.0.0.1 / 8.8.8.8)  
4. Primary zone(s) + **TSIG** for external-dns  
5. Point DHCP DNS at primary  
6. Optional: catalog + secondary; never write external-dns to secondary  

## Hard rules

1. external-dns → **primary only**  
2. Do not NAT-hijack DNS server’s own upstream :53  
3. New zones join catalog if secondary exists  
4. DoH/Private Relay bypasses split-DNS  

## Verify

```bash
dig A app.example.com @<TECHNITIUM> +short   # private VIP
dig youtube.com @<TECHNITIUM> +short         # public IPs
```

## Related

`skills/external-dns` · `skills/home-network-controllers`

From giovannirco/agentic-homelab, MIT.

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Stars: 1
Forks: 0
Open issues: 0
Last commit (this folder): Aug 3, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License: MIT
Repository: github.com/giovannirco/agentic-homelab
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: GitHub github-graphql

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technitium-split-dns skill. Agent Mart. https://agentmart.dev/skills/giovannirco-technitium-split-dns (last updated 2026-10-24)