VPN SSL with split tunnel disabled does not work properly

Hi everyone, I have a pretty big problem. Then I created an SSL VPN with Split tunnel disabled, the vpn connects and works, but it seems not to resolve the DNS, in fact if I poodle the google 8.8.8.8 dns, I get an "expired request" In practice I wish that when I connect with the VPN, all traffic must pass through the public IP of the firewall. So when I'm going to do a "WhatsMyip", I have to get the IP from the firewall and not my public. I remember that the VPN connects, works and I can also do Google searches, but when I enter any website, it times out. In addition, if I ping with cmd example: ping google.it only resolve ipv6 and not ipv4 .

my configuration:

DNS Server is DC01 E DC02

So when I go to resolve my ip, on any website, it must be 46.44.xx.xx and not my public ip

Thank You Guys