[ipxe-devel] How to UEFI HTTP chainload using MS DHCP

[Tuzhenhua]

Hi iPXE,
     I’m trying UEFI HTTP chainload with a MS DHCP server and IIS. 
     I checked online document http://ipxe.org/appnote/uefihttp. It’s for ISC. 
     Since I had a existing MS DHCP which successfully boot with TFTP chainload with iPXE, I still want to use it for UEFI HTTP chainload. 
     I tried to create a vendor class. Use 67 to lunch ipxe.efi and policy to lunch true boot.ipxe script. But nothing happened on the client when boot into DHCP query. 
     Would you please guide me to setup MS DHCP server for UEFI http Chainload? It’s much much appreciated for any help.

Regards,
Tony