Just to understand this: is opensuse back with ethX device names for ethernet? I have just looked at my test machine which I have always used directly physically. I think I started with leap 42.1 milestone1 or milestone2 on it for testing, maybe it was even 13.2 before that. But I have always fetched the .iso files and used them via real physical offline upgrade/install mode via usb-stick/iso-image. So maybe even that offline upgrade/install variant brings different functionality and outcome from online installs and upgrades via zypper (up/dup). As said before, some other machine came back online normally, I shall check its interfaces if they were or are ethX named. But I am still missing in action two more machines across the distance and I fear I need to pay a visit to those sites just the same :(