Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6


Maciej Rabeda
 

Hi guys,

Finally got some time to look into it.

Long story short, this smells like infrastructure problem.
SARR passes over 546/547 port pair. That is between UEFI PXE client and DHCP server (even if it is the same machine).
The next packet is essentially a Boot Server choice step. UEFI PXE client sends a unicast discovery packet towards Boot server (same machine, same address) coded as DHCP Request.
The release packet is a direct reaction to 3 second timeout (see time diff between packet 9 and 11).

See section 2.2.1 in PXE spec: http://www.pix.net/software/pxeboot/archive/pxespec.pdf

Please verify that your WDS service is running correctly, since clearly there is no reaction to that packet from Boot server.



On 28-Jun-21 22:05, LathaKannan Arumugam via groups.io wrote:
Can you please help us on this issues? 

From: devel@edk2.groups.io <devel@edk2.groups.io> on behalf of LathaKannan Arumugam via groups.io <larumugam@...>
Sent: Friday, June 25, 2021 1:11:42 PM
To: Bret Barkelew <Bret.Barkelew@...>; Rabeda, Maciej <maciej.rabeda@...>; devel@edk2.groups.io <devel@edk2.groups.io>
Subject: Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6
 

Any inputs?

We kind of blocked on this for a week.  Kindly look into packet capture and suggest a path forward.

 

 

From: LathaKannan Arumugam
Sent: Friday, June 25, 2021 9:23 AM
To: Bret Barkelew <Bret.Barkelew@...>; Rabeda, Maciej <maciej.rabeda@...>; devel@edk2.groups.io
Subject: RE: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6

 

Attached packet captured from server.

 

From: Bret Barkelew <Bret.Barkelew@...>
Sent: Friday, June 25, 2021 9:19 AM
To: Rabeda, Maciej <maciej.rabeda@...>; devel@edk2.groups.io; LathaKannan Arumugam <larumugam@...>
Subject: Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6

 


From: Rabeda, Maciej <maciej.rabeda@...>
Sent: Friday, June 25, 2021 7:40:16 AM
To: devel@edk2.groups.io <devel@edk2.groups.io>; Bret Barkelew <Bret.Barkelew@...>; Bret Barkelew <Bret.Barkelew@...>
Subject: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6

 

Looking at it. Any chance to get Wireshark trace for this scenario?

On 25-Jun-21 09:25, brbarkel via groups.io wrote:

Just poking this to see if anyone has any ideas. Thanks!

 


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