replace the PXE stack with an OS installer written in UEFI. This bootload can be installed through a guest running on the host in the EFI partition, or possibly through PXE or direct UEFI http load.
this allows you intermediate the boot process without coordinating with the administrative owner of the DHCP server, and is actually less janky than PXE
this allows you intermediate the boot process without coordinating with the administrative owner of the DHCP server, and is actually less janky than PXE