@eazis said in PXE UEFI boot problems:
NBP filename is ipxe.efiÿ
Did you copy&paste the filename into the Unifi DHCP settings page? Maybe just clear the setting and re-type by hand to make sure there is no hidden character in that filename field. I can clearly see 0xff in the PCAP file… So either the Unifi DHCP is doing something really weird or there is a character in that field.