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Need help understanding how to get around port-forwarding with tailscale
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this post was submitted on 02 Feb 2024
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My ISP says my IP is technically dynamic, but it hasn't changed once in the 6 years I've had their service. But that's for the best, since they're the only choice for symmetrical gigabit and their only option for static IPs is for business accounts.
So I continue to trust that they won't change it. Fingers crossed.
Dynamic IPs don't change very often. Sometimes you can get a new one by restarting your router, which most people don't do very often. But in my experience they stay the same if you don't restart it.
If you do end up with a new IP occasionally, it's typically not too hard to change things to the new one.
You can also just spend $10 on a domain name with a registrar that offers dynamic DNS. Offhand, both Namecheap and Cloudflare do. I have no idea what my public IP address is because my router just updates it automatically for me. Plenty of DDNS desktop clients around if your router can't for whatever reason.
Haven't seen mine change in 5 years, lol. Even with modem reboots!
Does your ISP sell static IPs? Maybe they are all static?
For an ISP using all public IPs, in the days of dial up they could rent less IPs than customers because people were online at different times. These days the routers are all online 24/7, so it seems odd to me that some ISPs have everyone on public IPs but they aren't static. Probably some technical reason why things don't work how I think they do, but it just feels like a way to sell static IPs as an add-on when it wouldn't cost them anymore to allocate an IP to a customer for the life of the connection.