Attempting to network boot endpoints on a different subnet/vlan from where the NBS/PXE server resides. Between the PXE server and endpoints that are network booting there is a Cisco ACI fabric equipment acting as a DHCP relay.
The ACI fabric network is dropping offers that do not include Option 82 - it appears our NBS server does not offer option 82 so the offer is silently dropped by the fabric.
Deployment Solution 8.7 GA and earlier
Ghost Solution Suite 3.3 RU10 and earlier
Cisco ACI fabric with IP helpers is dropping DHCP offers (from PXE/NBS) because they do not include Option 82.
Wireshark capture shows no Option-82 offered from PXE/NBS and this appears to be standard for most PXE servers.
Ghost Solution Suite 3.3 RU10 and earlier did not have support Option-82
Ghost Solution Suite 3.3 RU11 and later do have support Option-82
Deployment Solution 8.7 GA and earlier did not have support Option-82
Deployment Solution 8.7.1 and later do have support Option-82