Does your DDNS service provide/update AAAA records for IPv6?

Anyway it should work. Basically every device on your LAN that has IPv6 will be accessible from the internet. Not necessarily a good thing so ensure your router's firewalls are up to snuff.

Here, https://forum.lowyat.net/index.php?showtopi...post&p=88431256 , I tested using IPv6 to connect to my iPhone which was running a http server. And it works.

Without public IP, (Mainly for IPv4)
1. CCTV remote access without go through CCTV brand hosted server will not be accessible.
(I think some people will think access from CCTV company hosted platform not secured, but i think as long as using a well-known CCTV company then it is okay for most people,
and of course chinese or non well-known cctv or IP camera brand might be having some security issue, then for this it depends on the user.
2.Private game server hosted in home like Minecraft, Ark or something else will not be accessible. (But i know Minecraft support IPv6, and of course most people does not use IPv6) (Second way for MC- Ngrok to public access from internet)
3.Torrenting without IPv4 will having a lot of problem like lower download speed, and mostly upload speed will be limited.
4.VPN server hosted in home will not be accessible.
5.NAS hosted in home will need to go through NAS P2P cloud service for access which mean the speed will be limited.
6. Web server hosted in home will not be accessible from internet. (This can be solve by using Ngrok or Cloudflared tunnel)
7. PS online game will get lower NAT mode or level? (I dont have PS console) (will cause higher ping or causing more harder to find players to play together)
8. Small possibility for having same ip address with others on some services? (Might be false block/ban user if the same ip address ban)
9.Lower priority network to access internet?

Anything I didn't mention or said wrong, feel free to provide your opinion.

Edit Added: For TM IPv6,I think still need a lot of improvement made by TM before call it as fully usable ,or else there still got a lot of crap routing issue or getting lower speed from a lot of server.
For anyone who want to access LAN device without public ip can try a service called - Zerotier or Tailscale
And install it on every device that you want to access from outside.
And for device that unable to install zerotier or tailscale ,u can try setup a port redirect/forward on your PC or buy a raspberry-pi and setup port redirect/forward.
Or buy a Mikrotik router that is able to install zerotier on it and port forward to those internal device. (Normal users please dont consider this method, quite hard to learn.. haha, but it really the best router brand I own ever.)