how to provision CM4 only over usb in latest Raspberry Pi OS

[ZouChao091]

After checking the issue https://github.com/raspberrypi/cmprovision/issues/33 I don't find /etc/dhcpcd.conf in provision server, the 4PiB is installed with the latest raspberry Pi OS, how to config the provision server.

In addtion, PDF guide said "When using the Provisioner to program SODIMM-based Compute Modules over USB, do NOT connect the Ethernet port of the server Raspberry Pi. Its wireless connection is used to access the management web interface"

1. Does it means the Ethernet eth0 of the provision server is useless in this case, how to configure it at this USB flashing case.
2. What's the detail reason, there is no wireless network in my case , I want to connect PC to provision server with network cable directly or through switch