Configuring iPXE to DHCP probe a specific interface

[NiKiZe]

If it is always that same nic, and iPXE is booted from some local device, then you could have an embeded script that loops over the interfaces and checks the mac before booting that device.

However if you chainload iPXE over the network in the first place, then try snponly.efi (assuming efi here) - that should make it only have that same nic, not multiple ones.

To give more proper examples, could you give us more information about what platform you are booting (pcbios/efi), what nics it is, how iPXE is booted, and which build target of iPXE you are using.