[syslinux] Problems with EFI PXE boot on Hp DL380p Gen9

[Holger Baust]

Am 07.02.2015 um 19:50 schrieb Geert Stappers via Syslinux:
> On Sat, Feb 07, 2015 at 01:06:06PM -0500, Gene Cumm wrote:
>> On Fri, Feb 6, 2015 at 4:57 AM, Holger Baust wrote:
>>> Am 06.02.2015 um 07:44 schrieb Geert Stappers:
>>>>>> On Thu, Feb 05, 2015 at 07:02:07PM +0100, Holger Baust wrote:
>>>>>>> My IP is 0.0.0.0
>>>>>>> Any suggestion / hint ?
>>>>>> The (IMHO) missing information is the "DHCP Acknowledge"
>>>>>> that should have been between package #8 and #9.
>>>>>>
>>>>>> Capture that missing package. It should be "visible" at the DHCP server
>>>>>>
>>>>> Hmm.. This might be difficult. tftpd and dhcp are on the same system.
>>>>> If there was one, this should have been captured.
>  <snip/>
>>> Guess what the filter setting was? ;)
>>>
>>>  tcpdump -ni eth0.230 -s0 -w hp380g9_efi_pxe.pcap ether src c4:34:6b:b7:1b:cc or ether dst c4:34:6b:b7:1b:cc
>>>
>>> So the DHCPACK packet should have been captured...
> But it wasn't, neither the DHCPOFFER ...
>
>
>
>> The following has a simplification and then a specialized filter to
>> grab BOOTP/DHCP frames with the MAC in question.
>>
>>  (ether host c4:34:6b:b7:1b:cc) or ( ( udp port 67 or udp port 68) and (udp[36:4] = 0xc4346bb7 ) and (udp[40:2] = 0x1bcc))
>>
>> Beyond this, it feels like we'll need a specialized EFI load to try
>> and probe for more information.
> True.  And be aware that it might show in this case also  'my IP is 0.0.0.0'
>
> I still think the answer is the in DHCPOFFER packet.
>
> My advice: Eliminate VLAN 230  ( eth0.230 ) from the equation.
>
The Device is eth0.230 and we have to use Tagged VLANs on this port.
I have attached a new capture with this filter rules above.
Hope it helps...


MfG / Regards,
Holger Baust

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