Bug ID 22545770
Issue: The installation-stage version (3.10.0-327) of the Red Hat Enterprise Linux (RHEL) kernel and Oracle Unbreakable Enterprise Kernel (UEK) sets the onboard NIC to low power mode when the system shuts down after installation, then disables the Preboot eXecution Environment (PXE) on reboot.
Affected software:
Oracle Linux 7.2
Red Hat Enterprise Linux 7.2
Oracle Unbreakable Enterprise Kernel (UEK)
Red Hat Compatible Kernel
Workaround:
Red Hat Enterprise Linux 7.2: Perform a cold reboot of the server.
Oracle Linux 7.2 with UEK: Boot directly into the UEK kernel.
Oracle Linux 7.2 with Red Hat Compatible Kernel: Boot directly into the UEK kernel. A cold reboot of the server can also fix the issue.