If I understand the 30-interface script /etc/network/interfaces gets populated 
with eth0 and eth1 since they are not renamed.  When the new system boots they 
DO get renamed.  The client system /etc/network/interfaces then still refers to 
eth devices rather than enp and network does not come up...

________________________________________
From: linux-fai <linux-fai-boun...@uni-koeln.de> on behalf of Thomas Lange 
<la...@cs.uni-koeln.de>
Sent: Thursday, June 4, 2020 2:19 PM
To: fully automatic installation for Linux
Subject: Re: Network interface renaming fails

>>>>> On Thu, 4 Jun 2020 18:22:07 +0000, "Michael S. Kriss" <kr...@fnal.gov> 
>>>>> said:

    > During install of a fai client I'm getting:
    > systemd-udevd: eth0: failed to rename network interface 2 from 'eth0' to 
'enp2s0f0': Device or resource busy
This comes from the initrd created by dracut. You can just ignore this
message.

--
regards Thomas

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