this post was submitted on 16 Aug 2024
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IP4 is running out, that's the problem. Or better, IP4 is hoarded by companies and they don't give them up. The insane amount of network devices every human being uses on a daily basis doesn't make the situation better. It exploded the last 10 years and only gets worse. The fuckery ISPs are doing to solve it without IP6 is insane, fuck cgnats and co. The whole networking world would be so much better to get it over with and adopt IP6 everywhere and let the hoarders drown in their mountain of IP4.
My ISP gave me a IPV6 router. I have it bridged (or whatever the right term is) to another router that serves IPV4 addresses to all my devices. Worked well so far with the added bonus that the ISP can't see what's going on within my network.
Old tale, I know, but just cause v4 is running out on the internet it doesn't stop anyone from using it in their homes. I manage some ASNs on the internet. I have no need yet to worry about implementing v6 on the inside.
The thing is that if IPv6 were actually adopted, it would be straight up better. For everyone. It's easier to use if it's all the networking instead of just a niche case.
Yup, I know. What a pain to migrate it all.
It's really not though. ISPs are a problem, but every hosting provider I've used has offered IPv6. It's really trivial to setup IPv6 name DNS, and host a website on both IPv4 and IPv6. I just do it by default now.
Once it becomes the default to deploy to both, if IPv4 died then the IPv6 side would just keep working.
For DNS, you can make a single glue record contain an IPv4 and IPv6 address.
DNS just needs A and AAAA records for the Name servers. NS records still point to the hostname as normal.
For Web servers, the web server just needs to bind to the IPv6 address(es). Then in DNS just have an A and AAAA record for each website hostname. The server name directives will cover both.
There really isn't much to it right now. The technology is mature now. It used to be a pain, but now it isn't.
It really is for me when I've got thousands of servers and hundreds of firewall rules, hundreds of subnets and routing to worry about.