It is not clear to me when you get the error message. When you want to restore a container from checkpoint or when you want to create a container without host network. I tried to reproduce the issue, it it worked for me. host network couldn’t be a requirement as it is usually not even recommended to use host network.
If you share more code or command, or logs, please,.use the standard markdown syntax for code blocks, not quotes and you will not have problems with the backslashes either