Realtek 8111e vs. Precise

[compdoc]

> By "cleared out" do you mean deleted?

You can edit the file and delete the hardware entries below the #commented
lines.  Deleting the file may work.

These commands are useful:

How to generate /etc/udev/rules.d/70-persistent-net.rules:

sudo INTERFACE=eth0 udevadm test --action=add /sys/class/net/eth0
etc...

command to force:   sudo udevadm trigger

I tend to reboot after.