This directory contains static boot configurations (not that references in $PXESRV_ROOT/once have precedents). PXESrv looks for a file called like the client IP-address within this directory, and returns its content.
Redirect to another boot configuration file with chain
(cf. iPXE commands)
#!ipxe
chain ../centos/7/default
The target path could be any URL, or an absolute/relative path in the file-system.
Provide the same boot-configuration to multiple clients by creating
a single configuration file and using soft links ln -s called like
the client IP-addresses to reference it.