@JasonNaughton

Hi, I noticed that this was unresolved after so long. Wonder if you have solved it?
I recently stumbled across the man page for dhcpcd.conf. In there is a denyinterfaces (pattern) should solve the issue for you. It tells dhcpd to ignore the nic interfaces listed in pattern. Just was wondering if you found the fix otherwise hope this helps.

@JasonNaughton As we had another person run into a similar looking issue I had a closer look at the code and might have found why this happens. Please find all the details here: https://forums.fogproject.org/post/144691