# Host-specific PXE options class "pxeclients" { match if substring (option vendor-class-identifier, 0, 9) = "PXEClient"; # Keep identifier option vendor-class-identifier "PXEClient"; option PXE.mtftp-ip 224.1.5.1; option PXE.mtftp-cport 1758; option PXE.mtftp-sport 1759; vendor-option-space PXE; }