Some hosting providers don’t support IPv6 at all, others such as DigitalOcean only support IPv6 on non-custom Droplets and don’t support it at all for load balancers and other shenanigans.
I’ve read that IPv6 requires ICMP to work properly, but can’t find good documentation on what to allow in iptables.
So, what’s the deal here... my quest to adopt IPv6 has been very frustrating so far. Am I missing something?
Should I just drop the project?
Still a niche thing. It is not only ISP's - it is a lot of routing equipment either that does not (or not fully) support IPV6.
Btw., IPV4 ALSO requires ICMP to work properly. Properly i.e. to have optimal fragmentation size - without there are defaults that are quite often workable, but it is not "properly".
I am using IPV6 as secondary network in parts (because I run no risk of private IP overlap) but both ISP's and enterprise level customers are mostly duefully unaware of it, and / or not bothering with it. Part of a chicken/egg problem - as company, you inteact with the internet and all kinds of software and as long as you can not switch to totally to IPv6 - why bother to switch at all?
