Trying to set up a VPN connection from your smartphone to your IXON edge gateways does not work, or you áre able to VPN connect, but you cannot reach any of the devices behind the edge gateway, like a PLC, HMI, or controller.

You may be using one of the following cellular providers, but this problem has also been observed with other providers.

• Verizon
• AT&T
• T-Mobile
• others ...

The provider indicates that IPv6 is available. As such, your phone will try to use IPv6 to set up the VPN connection. However, internal testing reveals that the cellular connection is not fully IPv6 compatible. As a result, difficulties are experienced when trying to set up a VPN connection.

Configure your IXON Portal app to use IPv4 when setting up a VPN connection.

1. Open the IXON Portal app on your smartphone.
2. Tap on one of your edge gateways, find the "VPN Connect"-component, and tap the icon.
    
3. Change the VPN protocol to IPv4 only.
4. Set up the VPN connection as you did before.
   • If you are still unable to reach the devices behind the edge gateway, there may be something else going on. Please use the following support article to help you resolve the issue: Troubleshooting the connection to your machine.