We are testing CGNAT on our network with a few users and mostly everything is working fine, only a handful sites which are not loading but they work fine if we do not use the CGNAT connection.
We've tested this url to generate the NAT rules https://cgnat.remontti.com.br/
Where by initial private IP is 100.64.0.0 and our public range x.x.x.0/24 and 4000 ports per IP.
Customers are created on radius server with static IP from the CGNAT range 100.64.0.10 [example].
Once customer is dialled in, when we try "what is my public IP" it also shows the right public IP x.x.x.10
On the PPP profile we applied TCP/MSS = yes, ppp server max mtu and max mru = 1500
Then IP-Addresses = we created all the x.x.x.1/32 to x.x.x.254/32 on the wan interface
All banking, ssl sites everything works. This one site we tested does not work is https://astro4edu.org/
Have tried changing dns, manually changing mtu on client side but nothing is working.
Any suggestions or assistance will highly be appreciated