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Doing a fresh network install of 42.1 milestone 2 (from a DVD image
exported from another server via HTTP) seemed to finish normally, but on
reboot the system was no longer on the network, and ifconfig reported
only the loopback interface as being configured.  In YaST2, I resupplied
the IPv4 address, which fixed the problem:  ifconfig showed the external
interface as eth0 with the correct address, and I was able to use the
local network.

I remember seeing the "enp0" thing somewhere before fixing the default
route, so it's possible that may have messed up the address as well.
The system has a single Ethernet interface on the motherboard, using the
r8169 module, with no options.


Subsequently I found that I could not access the public Internet, and
"route -n" reported no default route; in YaST2, the default route I had
entered when configuring the installer was still there, but with a bogus
"enp0" interface; changing it to "eth0" in YaST2 fixed that problem.


Reproducible: Didn't try

Steps to Reproduce:
I did what I consider a standard network installation.  I can furnish an HTML
page that describes what I do in great detail . . . but it's probably more
efficient if you just ask me for specific details.