How do you solve dynamic DNS?

my router uses openwrt which supports dynamic DNS updating on its own for multiple providers, I currently am through namecheap on it.

Any registrar worth using has an API for updating DNS entries.

I just found this with a quick search: https://github.com/qdm12/ddns-updater

exactly. I literally have a bash script that calls the API triggered by cron every 30 minutes. That's it. Are people seriously using a freaking docker container for this?
- It's easy to set up and also keeps a history
I would recommend OVH for DNS, they have an API and are on the list for that tool. Also you can use the API to get lets encrypt certificates
Looks good. Thanks!

What do you mean?

I use http://www.duckdns.org/

Me too. I use uptime kuma to send the api request. then I also get uptime status 🙂
- That's a great idea, I hadn't thought of that

used a bash script and a cron job for a long time, now the whole topic is one of the projects i regularly rewrite whenever I want to get my hands dirty with a new programming language or framework.

cloudflare + the dynamic dns plugin for opnsense.

I use ddclient but in a docker container. Works great with minimal config

Cloudflare DDNS updated by ddclient on my OpnSense router. Cloudflare happens to be my current domain registrar. Honestly, my IPv4 doesn't change that often. And when I used to be on Comcast, they assigned a block of IPv6 addresses and the router dealt with that. Unfortunately, I now have Quantum Fiber who only assign a single IPv6 address, so I gave up on IPv6 for now.

Just a practice I've had over the years with domains: separate your registrar and your DNS. If one goes down, or out of business, you can fix it if you still control the other and its accessible. If you have both of them in one place, it's really hard to get that domain transferred.

I solve it by paying way too much for a block of static IPs.

Way too much for sure.

Just the business internet to get the foot in the door for a static IP 5x's the cost of my Internet.

It's actually cheaper to just have DC IPs and proxy through hosted containers. Which is kind of crazy.

Negative aspect is that DC IPs aren't treated very nice.
- Yeah this has been the biggest problem with hosting. For SMTP to work outbound you gotta have a good static IP. Everything else can be DDNSed. So either you get a business class connection or proxy through a VPS front end.

Have done it via bash scripts for years. Never had a problem. Since a few months i use https://github.com/qdm12/ddns-updater

afraid still works like a charm. cloudflare is ok. duckdns is cool.

Ixury for people that can have public IPs! :)

Yup, CGNAT blows.
- It's why IPv6 is important, but many didn't listen.
- Yeah, there are workarounds... And who knows, maybe its just safer than public ip... But definitely require some external fixture.
I'm in the same situation.

Fortunately there's a million companies that offer VPS with a static IP address for only few bucks a month. I set one up to run a wireguard VPN server which all my devices and home servers connect to as clients. I also configured everything to use a split tunnel to save bandwidth.

It's an added layer of security too.
- Can you detail the split tunnel part?

Afraid has a curl update. Cron job. It's that simple.

My ip updates maybe once every three months or so, but what i did was just write a script that checks the current ip and updates the domain registrar. My domain is on cloud flare, and they have an API through which I can do it. It's literally one POST request. There are solutions out there but I wanted a really simple solution I fully understand so I just did this. Script runs in cron every few hours and that's it.

Ddclient has done the trick for me, and my registrar supports it with an API

I set it once like 6 years ago and forgot it wasn't something pre-installed and configured until I saw your comment. I was reading through the comments looking for the "you don't need to do anything, ddclient takes care of it"

Desec + Nginx Proxy Manager as a reverse proxy. Solves ddns and https with a letsencrypt wildcard cert.

Hadn't heard about deSec until now, seems to be run by some cool privacy minded folks in Germany:

https://desec.io/

Tor hidden service

I would go for registering my own domain and then rent a small vps and run debian 12 server with bind9 for dns + dyndns.
If you don't want to put the whole domain on your own name servers then you can always delegate a subdomain to the debian 12 server and run your main domain on your domain registrators name servers.

edit:

https://github.com/qdm12/ddns-updater

If your registrar is supported the ddns-updater sounds a lot easier.

Have you heard of the kuadrant project? It is for kubernetes and has a dynamic DNS element. Kuadrant.io

Probably good, but I want to stay away from anything related to Kubernetes. My experience is that it's an overkill black hole of constant debugging. Unfortunately. Thanks though!
Interesting, this seems to have better documentation and feedback than the external-dns operator
- It leans on the external-dns operator in it's DNS operator.

Ddns-updater and porkbun.

@sith
If this is useful we had a bit of a conversation about DynDns options a while back. Im currently using Hetzner with my subdomain names being dynamically updated.
lemmy.ml/post/18477306

If you don't need actually public DNS, something like Tailscale might be an option.

terraform and AWS route 53 on a self hosted gitlab pipeline.

I personally use https://desec.io

https://www.cloudns.net/ Makes dynamic DNS very easy.

Cloudflare-ddns in docker

Good FOSS software and reliable service providers? Etc.

Wow much detail. You're gonna get so much help.

Actually I did. Not thanks to you though.