Hello, Am Sonntag, 9. Februar 2020, 14:10:44 CET schrieb Nicolas Kovacs: > Hi, > > I've done my fair share of CentOS 7 installations, but this is the first > time I have this kind of weird problem. Here goes. > > In my office I have a battered Dell Optiplex 320 PC with two NICs that I'm > using as a bare metal sandbox server for testing purposes. > > The CentOS 7 installer sees the connected network card as eth0. But after > the first reboot, the interface comes up as eth1. > > My first reflex was to rename ifcfg-eth0 to ifcfg-eth1 and edit it > accordingly. Weirdly enough, on the subsequent reboot the interface comes > back as eth0. > > I took a peek in /etc/udev/rules.d to see if there was any persistent > interface definition, but the directory is empty. > > On a side note, I installed Ubuntu Server 16.04 LTS on that same machine and > got the exact same problem. Debian installer sees the main network > interface as eth0, but on the first reboot the interface comes back as > eth1. > Any suggestions ? this is coming from The NetworkManager? I set in my config *-eth0 the HWADDR=XXXXXXXXXXXX and NM_CONTROLLED=no -- mit freundlichen Grüßen / best regards Günther J. Niederwimmer