That is very possible. IPv6 only is still problematic. There are still loads of servers without or with broken IPv6 connectivity. You could put cloudflare on front of your server and get an IPv4 address that way.
this post was submitted on 27 Sep 2023
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Cloudflare is a few clicks away, but I don't wanna use IPV4, I want the world to move forward
Disabling IPv4 isn’t going to do anything to move IPv6 forward. You’re just shutting those who remain limited to IPv4 through no fault of their own.
After some sleep, I have to concede you this point, I enabled Cloudflare no my side. I've read a lot of criticism of Cloudflare here on Lemmy itself, but it seems to be the lesser evil.
IPv6 only is still problematic.
Well, you see, it's only been around 20 years or so. We need another 20-40 years of "IPv6 is coming" reminders before people really take a look at it.
I don't like it either but the facts are the facts. Transitioning between technologies is always hard, especially if it isn't necessary. Nat works too well.
This surprises me since Cloudflare has AAAA records listed for lemmy.world. Do you know your way around tcpdump? If so, it might be interesting to see what's happening with traffic to those addresses. My desktop doesn't have v6 right now (sigh) or I'd be testing that myself ...
They can accept incoming connections from IPV6 trough Cloudflare's proxy, but the underlying server isn't ipv6 capable:
2023-09-27T19:17:23.955421Z DEBUG activitypub_federation::activity_queue: Activity https://lemmy.fbmac.net/activities/undo/506ed9a4-bfee-472f-8249-f802639eec8d was rejected by https://lemmy.world/inbox, aborting: Request error: error sending request for url (https://lemmy.fbmac.net/u/fbmac): error trying to connect: tcp connect error: Address not available (os error 99)
lemmy.ml seems to have the same problem
ipv6 only
You successfully identified your problem.