Troubleshooting AWS Client VPN: A connection is terminated due to an IP mismatch - AWS Client VPN

Troubleshooting AWS Client VPN: A connection is terminated due to an IP mismatch

Problem

VPN connection terminated and the client software returns the following error: "The VPN connection is being terminated due to a discrepancy between the IP address of the connected server and the expected VPN server IP. Please contact your network administrator for assistance in resolving this issue."

Cause

The AWS provided client requires that the IP address that it is connected to matches the IP of the VPN server backing the Client VPN endpoint. For more information, see Rules and best practices for using AWS Client VPN.

Solution

Verify that there is no DNS proxy between the AWS provided client and the Client VPN endpoint.