Comment 3 for bug 1665441

I've gone ahead and proposed the fix for merging. It results in interface config files that are correct but that will only work with legacy (pre-NetworkManager) networking until https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=a8f0d88596d8dd2b807a7b0adee272c4f077dade reaches centos/rhel/etc packaging.