/dev/eth error

When I run the sudo ./qemu.sh I get the follow in the ELKS window:

Starting network processes: eth ktcp

ERROR: failed to open device /dev/eth
failed to open /dev/eth
Starting network services:  httpd.

ELKS 0.2.0
login:

My environment is Windows 10 host running Ubuntu linux in virtualbox,
and then qemu running in vbox and elks running in  qemu.

I suspect this error is an issue with so many layers of
virtualization.  Is there any hope of making this work or do I need a
more hospitable environment to use elks netwrorking?