Communication between virtual machine(Virtual Box) and FIO

・To communicate with FIO, OpenPLC is installed on Ubuntu installed in the Virtul Box.
・Virtual Box is also equipped with Kali Linux, and Kali Linux and OpenPLC are configured with the same host-only adapter.
・The Virtual Box’s host-only adapter is configured as a network adapter for FIO’s Modbus TCP/IP server.

In this state, communication between OpenPLC and FactoryI/O also flows to Kali Linux.

I want to make Ubuntu and Kali Linux with OpenPLC installed belong to the same network, but I want to prevent the above communication from flowing to Kali Linux.

Is there any way to do this?