Answer: official binaries do not exist as of this writing. I won't post the binary I got to work because no one in their right mind would trust it, but here's what I did: Downloaded the driver sources from Intel here: [URL] Updated to the most recent kernel backport packages with "sudo apt-get install --install-recommends linux-generic-lts-xenial" Updated gcc to a more recent version with 'retpoline' support ([URL] to match the newer kernel packages. Built e1000e-3.4.0.2 from the Intel sources, put it onto the machine via USB stick, replaced the existing e1000e driver under /lib/modules, and added a line with 'e1000e' to /etc/modules. Added to /etc/network/interfaces:  
Do network drivers for Ubuntu 14.04 on Optiplex 7060 exist, preferably in .deb form?
Optiplex 7060, network drivers for Ubuntu 14.04