You shouldn’t need to adjust the bind address for the OPC-UA Server within Ignition to make the outbound connections to KEPServerEx. For the endpoint URL, I’d use host.docker.internal (more info in the Docker Docs here, specifically the section: I want to connect from a container to a service on the host) to resolve to your host system. It looks like 192.168.1.95 is actually the IP address of your Ignition Gateway container, not the IP address of your host system.