Resolve error "HttpEOLicenseService activateEngageOneLicense Invalid MAC Address" in EngageOne Server

Issue

When applying a new EngageOne license, the customer gets the following error:

HttpEOLicense W com.pb.engageone.license.service.HttpEOLicenseService activateEngageOneLicense Invalid MAC Address

Cause

The customer had 3 network cards.  Their specific issue was due to them not having permissions to the ent0, ent1, ent2 devices.

Resolution

UPDATED: November 14, 2017
The ent0 device was the one specifically for EngageOne but having either 1 or 3 MAC addresses in the license would have worked either way.

FYI: The run time userid must have access to run enstat and lsdev commands.