Feature/hetzner dns provider

[ArcanConsulting]

Summary

New plugin for comprehensive Hetzner DNS management in OPNsense.

Features

• Multi-account support - Manage multiple Hetzner API tokens
• Multi-zone DNS management - Handle all your domains from one interface
• Dynamic DNS with automatic failover between WAN gateways
• Dual-Stack support - IPv4 (A) and IPv6 (AAAA) records
• Full DNS record management - Create, edit, delete all record types (A, AAAA, CNAME, MX, TXT, SRV, CAA, etc.)
• Change history - Track all DNS changes with revert/undo functionality
• Notifications - Email, Webhook, and Ntfy support
• Configuration backup/restore

Supports both Hetzner Cloud API and legacy DNS Console API.

Screenshots

Technical Details

• Location: dns/hclouddns
• Backend: Python 3 with Hetzner DNS API integration
• Frontend: OPNsense MVC (Volt templates, PHP controllers)
• Service: Configurable update intervals via cron

Testing

• Tested on OPNsense 24.7
• Multiple Hetzner accounts and zones
• Failover between multiple WAN gateways verified
• IPv4 and IPv6 record updates confirmed

Checklist

• Code follows OPNsense plugin conventions
• Makefile with proper versioning
• ACL definitions included
• Menu integration