On an A12 BIOS on my E7250, UEFI PXE booting doesn't appear in one-time boot menu and BIOS configuration (of course UEFI Network Stack and NIC w/PXE boot is enabled). After downgrading BIOS to A00, it magically comes back, but after updating back to A12 - it's gone again.
I've also tried A08, no option in here, so it was probably broken before. Legacy NIC boot works nicely and flawlessly.
Are there any Dell guys out here who could forward it to BIOS development team?