Additionally, for claim that IPv4 does not do that, please provide 
Wireshark trace, if available.

On 29-Jun-21 18:36, Maciej Rabeda wrote:
> 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?
>> Get Outlook for Android <https://aka.ms/AAb9ysg>
>> ------------------------------------------------------------------------
>> *From:* devel@edk2.groups.io <devel@edk2.groups.io> on behalf of 
>> LathaKannan Arumugam via groups.io <larumugam=microsoft.com@groups.io>
>> *Sent:* Friday, June 25, 2021 1:11:42 PM
>> *To:* Bret Barkelew <Bret.Barkelew@microsoft.com>; Rabeda, Maciej 
>> <maciej.rabeda@linux.intel.com>; 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@microsoft.com>; Rabeda, Maciej 
>> <maciej.rabeda@linux.intel.com>; 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@microsoft.com 
>> <mailto:Bret.Barkelew@microsoft.com>>
>> *Sent:* Friday, June 25, 2021 9:19 AM
>> *To:* Rabeda, Maciej <maciej.rabeda@linux.intel.com 
>> <mailto:maciej.rabeda@linux.intel.com>>; devel@edk2.groups.io 
>> <mailto:devel@edk2.groups.io>; LathaKannan Arumugam 
>> <larumugam@microsoft.com <mailto:larumugam@microsoft.com>>
>> *Subject:* Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected 
>> DHCP RELEASE after PXE server reply on IPv6
>>
>> + @LathaKannan Arumugam <mailto:larumugam@microsoft.com>
>>
>> - Bret
>>
>> ------------------------------------------------------------------------
>>
>> *From:*Rabeda, Maciej <maciej.rabeda@linux.intel.com 
>> <mailto:maciej.rabeda@linux.intel.com>>
>> *Sent:* Friday, June 25, 2021 7:40:16 AM
>> *To:* devel@edk2.groups.io <mailto:devel@edk2.groups.io> 
>> <devel@edk2.groups.io <mailto:devel@edk2.groups.io>>; Bret Barkelew 
>> <Bret.Barkelew@microsoft.com <mailto:Bret.Barkelew@microsoft.com>>; 
>> Bret Barkelew <Bret.Barkelew@microsoft.com 
>> <mailto:Bret.Barkelew@microsoft.com>>
>> *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!
>>
>
>