[Tool] ipv6ddns: Network-wide DDNS for dynamic IPv6 prefixes and multiple WANs

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In environments where IPv6 Prefix Delegation (PD) is dynamic, maintaining consistent DNS records for internal hosts can be problematic. Traditional DDNS clients are host-centric and do not scale well for network-wide management.

ipv6ddns operates as a centralized network monitor. It detects global IPv6 address changes for specific MAC addresses and automatically synchronizes these changes with your DNS providers.

  • No agents required: No software needed on target devices (IoT, cameras, etc.).

  • Multi-WAN Support: Seamlessly handles multiple upstream connections (e.g. FTTH + Starlink). AAAA records are kept in sync for all active global addresses, allowing inbound failover to just work.

  • Multi-Provider Support: Cloudflare, AWS Route53, DuckDNS, and more.

  • Deep MikroTik Integration:

    • Local DNS Sync: Directly manages RouterOS /ip/dns/static records for reliable local resolution.
    • Efficient Discovery: Leverages the RouterOS API to query the neighbor table, eliminating the need for network scanning.
    • Container Native: Optimized to run within RouterOS containers.

The tool is designed to be lightweight and stateless. It can run directly on the router or an adjacent server.

Documentation & Source: GitHub - miguelangel-nubla/ipv6ddns: Discover the IPv6 addresses of specific hosts in your network and update DNS records dynamically

Feedback is welcome: I would love to hear if you end up running this. If you have a specific use case or find a bug, please let me know here or open an issue on GitHub!

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