To get more information regarding how to set up the ESPRESSObin even on different OSes, you can take a look at http://wiki.espressobin.net/tiki-index.php?page=Software+HowTo.
For further information regarding qemu-debootstrap, a good starting point is at https://wiki.ubuntu.com/ARM/RootfsFromScratch/QemuDebootstrap. To manage Ethernet devices and for further information about networking on a Debian OS, you can take a look at the following: https://wiki.debian.org/NetworkConfiguration.

See also