this post was submitted on 12 Dec 2025
57 points (96.7% liked)
Programming
23908 readers
146 users here now
Welcome to the main community in programming.dev! Feel free to post anything relating to programming here!
Cross posting is strongly encouraged in the instance. If you feel your post or another person's post makes sense in another community cross post into it.
Hope you enjoy the instance!
Rules
Rules
- Follow the programming.dev instance rules
- Keep content related to programming in some way
- If you're posting long videos try to add in some form of tldr for those who don't want to watch videos
Wormhole
Follow the wormhole through a path of communities !webdev@programming.dev
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Your detail is correct, but I feel like the point is - it would not work if there would be no server
We need to stop using legacy IP.
I was reading recently about how Tailscale makes peer-to-peer connections work, which I thought was quite interesting. If we stop using NAT there is still an issue of getting traffic through stateful firewalls. That can be hard without a server because, for example, in some cases you need to coordinate two nodes sending each other messages on the same port nearly simultaneously to get all the intervening firewalls to interpret that as an "outbound" session from both sides to allow traffic through. https://tailscale.com/blog/how-nat-traversal-works
Have you heard of yggdrasil?
I was trying to find a summary of what it does, but couldn't. That's how far I've got.
https://yggdrasil-network.github.io/
sorry for not providing a link. It's not totally related to legacy ip, but might be interesting in the context of the whole topic.
tldr: it's an encrypted mesh network on top of the internet (and every member gets an yggrasil ipv6 address)
Yes, that seems all like neat technology, but what is the use-case for that?