Created attachment 548995 [details]
PXE server configuaration and tcpdump traces

While performing UEFI PXE boot for RHEL6.x (RHEL6.1/2) the PXE client is able to download bootx64.efi image successfully. However PXE client never requested for configuration file BOOTX64.conf from PXE server and hence unable to load vmlinuz and initrd images. PXE client gets stuck in the grub command line and won't proceed beyond that. This issue can be produced with Emulex oneconnect CNA's and intel X520 CNA.


Steps to Reproduce:
1. Setup PXE server as mentioned in the attached file
2. Boot from PXE client to PXE server
3. PXE clinet will get IP address assigned by DHCP server running in PXE server mechine and get the bootx64.efi image file
4. PXE client gets stuck at grub command line and never be able to proceed beyond that.
  
Actual results:
PXE clinet gets the DHCP adrress and bootx64.efi file gets transfeered via TFTP server, however PXE clinet never requested for configuaration file BOOTX64.conf which specifies the location of initrd and vmlinuz images.

Expected results:
PXE client should request configuartion file BOOTX64.conf from PXE server and after that vmlinz and initrd images should be loaded and installation process should begin

Additional info:
attached zip file contains two files in it.
1.	Steps that we did to configure the UEFI PXE server (RHEL6.X-UEFI_Config)
2.	Wireshark trace taken on the PXE server interface while client was booting to the PXE server (PXE_Traces_RHEL6.1)