UEFI PXE Boot Policy

Use this option to set the order of network boot targets in the UEFI Boot Order list. When set to Auto, new network boot targets are added to the end of the list according to the default policy of the system ROM.
NOTE:

When both IPv4 and IPv6 are enabled, each network boot target appears twice in the UEFI Boot Order list (one for IPv4 and the other for IPv6).