Why does a network interfaces fail to start on boot?

Solution Verified - Updated -

Issue

  • After a server boots up, a DHCP based network interface is not working and has no IP address
  • The following error may be found in /var/log/dmesg:
ADDRCONF(NETDEV_UP): eth0: link is not ready

Environment

  • Red Hat Enterprise Linux
  • DHCP based networking

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