What's in it:
- RFC 2136 / TSIG updates as a first-class path. FortiGate genericDDNS and MikroTik's /tool dns-update work natively — no custom client needed. HTTP API is also available for everything else.
- IPv6 end-to-end. Authoritative nameservers reachable over IPv6 (with AAAA glue published at the parent .dev zone), customer zones publish A and AAAA, and the platform works for IPv6-only clients.
- DNSSEC available on selected zones. With a single toggle.
- Bring your own domain via subdomain delegation. Point subdomain.yourcompany.com at our nameservers, manage normally.
- Hidden primary architecture: two geographically distributed secondaries (Sweden + Switzerland) verify TSIG locally and forward updates to a primary that doesn't take public traffic.
- Private-APN-friendly: we accept RFC 1918 and CGNAT addresses in records, which means cellular fleets on private APNs can use public DNS for stable hostnames pointing at internal IPs. Described in the fleet ops guide.
- A small Docker container (ghcr.io/33k-org/dynip-updater) for any docker-compose / Kubernetes / Coolify / Dokploy setup.
Background: 25 years of managed networking. DDNS was the part that broke or required tricks. Wanted one that didn't.
Stack: PowerDNS 4.8 authoritative, FastAPI backend, Postgres, Postfix for transactional mail, Cloudflare for the external surface and as a tunnel for the API. Live on dynip.dev. Paddle for billing. Free tier exists.
Happy to dig into architecture, the TSIG sync mechanism, per-zone DNSSEC handling, the hidden primary approach, or anything else.
Which was a bit confusing when I clicked the confirm-your-email link. No confirmation or status or anything.
< is there anything else you would like me to answer or is that good enough - GenericAI answer>
But jokes aside, words are difficult and also not my first language
Just more hidden cost of AI.. it's sufficiently hard to avoid these kinds of structural smells that I've gone back to just writing my own copy everywhere.
Also, is there anycasting?
right now there is no anycast available, possible in the future
I still can not figure out any economical way to roll out anycast.
Doesn't that cause security issues by making it possible to put other people's private servers (that you want to do XSS-type attacks against) into your domains or something? I have a vague memory of it being a security no-no somehow.
How did you set up PowerDNS? Single/multiple instances? One DB shared by many or multiple authoritative with one hidden primary?
if you register a zone and open the snippets quickly, there is a green notification saying tsig replication underway for x amount of seconds and until that happens RFC 2136 updates are not possible but the ones that use api are available right off the bat.
However, if you want to self-host, not caring for reliability or ease of use: bind9 supports RFC 2136 DNS UPDATE and DNSSEC, too (haven't figured that out yet, though). For my setup I also wrote a small Go executable that translates HTTP requests, because my home router does not talk DNS UPDATE.
And yes, BIND allows for a lot of different things, RFC 2136 being one of them and I have been looking at multiple options before settling down on the current structure. I built a few test cases from my Fortigate (dynip came to be initially fortigate only with simple copy paste over dns internally)
And there are a few code examples that can be used internally on various hosts, windows or linux, there is even an arduino example if you have any iOT devcices lying around in your home lab. and Writing a Go executable is a good idea, look out under /docs for updates :)
Fortinet for example have a similar thing, you can within their web interface register a something.fortiddns.com or float-zone.com or others. but if you upgrade the fortigate with a newer model you need to get in touch with their support because the domain is locked to the old hardware.
syncology has their own, I mean there has never been more options, what I am doing is trying to bundle, connect and provide a platform for your own domains, that can support letsencrypt out of the box, that you can use multiple update paths with ipv6 if needed.
long reply, I am genuinely happy for the "why" questions as it allows me to speak about the platform :)
So no. the auth token is just for the API and can be used as a bearer for the api, the TSIG are always valid unless the domain is deleted
the free tier allows for 5 zones and all get individual tsig keys and they are always active. no need to pay unless you start handling 100s of new zones, updates, delete etc. so there is a split between the two types of tokens. hope it is clear
Then Tailscale came out and I stopped caring about DDNS or CGNAT ever since.
Agree that the OpenWrt DDNS scripts are a bit of a pain with keys secrets but the snippets function actually take the guess / how-does-it-work work out of the equation so I am pretty happy with that
Looking into switching today :D
Check the snippets after you create a zone, hopefully less hacky scripts :D
One example I used it for just a few days ago was to set up dual ipsec tunnels for redundancy in fortigate in a remote warehouse. with the snippets I can just add a byod domain and paste the config into the cli and ship the devices. when they connect it it dials up, updates the ip in the dashboard (with notification that it has changed) and the vpn tunnels comes up automatically. it is available as road warriors as well, or dialup ipsec tunnels but I want dual initiator functionality.
Maybe this reply isnt really what the site is for but rather a subset of what can be done.
have a look at https://dynip.dev/guides/ I tried to add substantial information on what can be done
Just as a warning however the vibe coded website doesn't inspire confidence this isn't low quality auto generated AI slop and/or AI managed infra.
Looking into it of course this seems to not be the case, but just wanted to say, don't use generic looking theming that is default of all LLM-generating websites :)
With that said, I hope as well that it is a amazing idea, I am really happy with how it works and performs.
On the other hand, you being on this comment thread and answering questions competently is a huge boost to the project's credibility in my eyes! But once the link disappears from the front page, only one of these things will remain. :-)
It's not like pre-LLM you wouldnt go to Themeforest and see hundreds of designs that were all the same. Now they just call it AI slop, before it was just slop.
Fun times :)
Thanks for being awwesome!