NICs have the wrong MAC address and "systemd-udevd: error changing net interface name ethX to ethY: File exists" error is seen in the logs

Issue

• We have set HWADDR in the ifcfg files to assign specific names to each interface and it is not working.
• Trying to give a specific name like eth0 or eth1 to each interface.

• Finding these error messages and interfaces show the wrong MACs in ifconfig.

  systemd-udevd: error changing net interface name eth0 to eth1: File exists
  systemd-udevd: error changing net interface name eth1 to eth0: File exists
  

• Finding these error messages in IBM System z (s390x) systems:

  systemd-udevd: Error changing net interface name 'hsi2' to 'hsi3': File exists
  systemd-udevd: could not rename interface '5' from 'hsi2' to 'hsi3': File exists