RIp4 Openvpn server IPv6 & IPv4 CGNAT

Popeye59

Hi all,
I have an openvpn server (on raspberry) that worked perfectly with my old ISP.
I recently changed ISP, the router of this one is in IPv6 & IPv4 CGNAT.
Since then, despite a new installation of my openvpn server, I'm having a lot of problems connecting to my vpn.

It is functional from my 2 mobiles (Android and Apple, with 2 different providers), but impossible to connect from a Windows PC, a Mac...and even a Chrome Os.
In connection sharing from my 2 mobiles: OK with my Iphone, NOK with Android.

I'm stuck today, and I'd like to know if there is a way to solve my problem.

Thank you in advance

TinCanTech

If your server is behind CGNAT then it does not have a publicly routable IP address and you cannot connect to it over the internet. Check your router for your public IP address.

Popeye59

Hello
Thanks for the feedback.
I have an ipv6 public address, I can also use my vpn on raspi (behind my router) from my Android mobile and from my Mac mobile.

edit : Openvpn is configured for the ipv6 address of my raspi (vpn server).
On my router, the port used by my vpn server is open on the firewall

TinCanTech

Ask your new ISP about CGNAT and running a server behind it.