systemd based machines don't use ethX anymore. There is a more reliable naming 
scheme described here.

> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.freedesktop.org_wiki_Software_systemd_PredictableNetworkInterfaceNames_&d=DwIF-g&c=gRgGjJ3BkIsb5y6s49QqsA&r=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A&m=r6yNOWImSOHQP7nksDZAzQXDRFb52SFP3q08jQNE358&s=2gqVMIg2JhFlhK_y-M-bVzc7nP1586T5HmS4c3vX5hs&e=
>  

I've been using the #3 scheme which is based on the geographical location of 
the 
network card. The system will prefer schemes #1 and #2 if the bios numbers them 
but #3 always works nevertheless during installs.



On 9/11/19 6:51 AM, Steven C Timm wrote:
> I don’t know about your machine but I have seen on other SL7 machines that 
> what 
> was eth0 turns to eth1 and so forth.  Do ifconfig -a
> That will show you all interfaces on the machine.  Then use ethtool on them 
> to 
> see which one has the link.
> 
> Steve
> --------------------------------------------------------------------------------
> *From:* owner-scientific-linux-us...@listserv.fnal.gov 
> <owner-scientific-linux-us...@listserv.fnal.gov> on behalf of Francesco 
> Alfano 
> <00000bdf64e162f4-dmarc-requ...@listserv.fnal.gov>
> *Sent:* Wednesday, September 11, 2019 6:42:05 AM
> *To:* scientific-linux-users <scientific-linux-users@fnal.gov>
> *Subject:* Missing eth0 after upate to 7.7
> I have update to 7.7 and now i missing network connection:
> The ifconfig eth0 returns
> Device not found.
> 
> How can I resolve the problem ?

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