Comment # 2 on bug 967206 from Donald Curtis

Stefan, only that the default for Leap 42.1 is to use "persistent interface
names"; which will happen with an install but as the Release Notes mention is
not recommended for an upgrade from 13.2.

The workaround needed for an upgrade from 13.2 is only needed after the initial
reboot in the upgrade procedure to ensure that network connectivity (Network
Manager WiFi passwords) will happen as expected and therefore the upgrade
procedure can complete successfully, including any network activity it requires
during the initial reboot.

Once the upgrade has completed, I can see no advantage in continuing to use the
13.2 "predictable network interface names", and indeed can only suspect that
other adverse effects will occur as Leap 42.1 progresses if the interface names
are not changed to the default Leap 42.1 style.