I upgraded one of my whiteboxes to ESXi 6 and noticed the Realtek NIC was no longer detected. I tried to install the same VIB I used previously and got dependency errors. A quick google search later and I found this post that references a communities post that has a fix. Yay!
Note – this probably shouldn’t have been posted publically during the beta program but meh, past is the past.
Here’s the VIB: http://vibsdepot.v-front.de/depot/vft/net51-drivers-1.0/net51-drivers-1.0.0-1vft.510.0.0.799733.x86_64.vib I can confirm this working on a Gigabyte Z68X-UD3H-B3 that has a Realtek 8168 on board. Many thanks to the author!