DirecttAcces Clients Show up in remote client status but can't connect. IPV6 internal network

Dear All,

I'm using a DirectAccess server 2012 R2 and Windows 8 enterprise clients. The problem that I am facing is that the clients can't connect to the network, the operation status on the DA shows that everything is working fine and they also show up in the remote client status. I think the problem might have to do with the IPV6 internal network that I'm using but I can't seem to fix it. I tried every troubleshooting step that I've found but can't connect. I will also attach some screenshots that can clarify the problem. The first one shows the connection with the DA server.

Then on the client I ran the DA client troubleshooting tool. Which gave some information. The dns server adress is the internal adress of the dns server I am using.

As I'm only allow to upload two images the thrid one can be found here:

DA troubleshooting 2

I'm really out of ideas on how to let the DA clients succesfully connect to the DA server. So any help would be greatly appreciated.

Thanks in advance!