<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word"> <div class="WordSection1"> <p class="MsoNormal">FYI<o:p></o:p></p> <p class="MsoNormal">For IPv6, the TFTP-based network boot process (i.e., pxe) is called Netboot6 & detailed in “24.3.1 Netboot6”/” 24.3.1.2 IPv6-based PXE boot", and for IPV4 PXE we also curate changes/clarifications in “E.4.20 PXE 2.1 specification wire protocol clarifications”, all of which are found in <a href="https://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf"> https://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf</a> since <a href="https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.pix.net%2Fsoftware%2Fpxeboot%2Farchive%2Fpxespec.pdf&data=04%7C01%7CBret.Barkelew%40microsoft.com%7C6ba252758f3d4ef4eb2208d93b1c8cf8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637605816087554815%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Lb7ELKglF3Y%2Fdeg5aNdrt8WTPSpytI2kF%2FGm6CNTolQ%3D&reserved=0"> http://www.pix.net/software/pxeboot/archive/pxespec.pdf</a> is frozen/unmaintained at this point.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Vincent<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal"><b>From:</b> devel@edk2.groups.io <devel@edk2.groups.io> <b> On Behalf Of </b>Bret Barkelew via groups.io<br> <b>Sent:</b> Tuesday, June 29, 2021 9:54 AM<br> <b>To:</b> devel@edk2.groups.io; maciej.rabeda@linux.intel.com; LathaKannan Arumugam <larumugam@microsoft.com><br> <b>Subject:</b> Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6<o:p></o:p></p> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> <div> <div> <div> <p class="MsoNormal" style="background:white"><span style="color:black">Thanks, Maciej! We’ll investigate!<o:p></o:p></span></p> </div> </div> <div id="ms-outlook-mobile-signature"> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">- Bret<o:p></o:p></p> </div> </div> </div> <div class="MsoNormal" align="center" style="text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="divRplyFwdMsg"> <p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Rabeda, Maciej <<a href="mailto:maciej.rabeda@linux.intel.com">maciej.rabeda@linux.intel.com</a>><br> <b>Sent:</b> Tuesday, June 29, 2021 9:39:59 AM<br> <b>To:</b> <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a> <<a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a>>; LathaKannan Arumugam <<a href="mailto:larumugam@microsoft.com">larumugam@microsoft.com</a>>; Bret Barkelew <<a href="mailto:Bret.Barkelew@microsoft.com">Bret.Barkelew@microsoft.com</a>><br> <b>Subject:</b> Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6</span> <o:p></o:p></p> <div> <p class="MsoNormal"> <o:p></o:p></p> </div> </div> <div> <p class="MsoNormal" style="margin-bottom:12.0pt">Additionally, for claim that IPv4 does not do that, please provide Wireshark trace, if available.<o:p></o:p></p> <div> <p class="MsoNormal">On 29-Jun-21 18:36, Maciej Rabeda wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <p class="MsoNormal" style="margin-bottom:12.0pt">Hi guys,<br> <br> Finally got some time to look into it. <br> <br> Long story short, this smells like infrastructure problem.<br> SARR passes over 546/547 port pair. That is between UEFI PXE client and DHCP server (even if it is the same machine).<br> 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.<br> The release packet is a direct reaction to 3 second timeout (see time diff between packet 9 and 11).<br> <br> See section 2.2.1 in PXE spec: <a href="https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.pix.net%2Fsoftware%2Fpxeboot%2Farchive%2Fpxespec.pdf&data=04%7C01%7CBret.Barkelew%40microsoft.com%7C6ba252758f3d4ef4eb2208d93b1c8cf8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637605816087554815%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Lb7ELKglF3Y%2Fdeg5aNdrt8WTPSpytI2kF%2FGm6CNTolQ%3D&reserved=0"> http://www.pix.net/software/pxeboot/archive/pxespec.pdf</a><br> <br> Please verify that your WDS service is running correctly, since clearly there is no reaction to that packet from Boot server.<br> <br> <img border="0" width="1557" height="914" style="width:16.2166in;height:9.525in" id="Picture_x0020_2" src="cid:image001.png@01D76CD2.39FA0EA0"><o:p></o:p></p> <div> <p class="MsoNormal">On 28-Jun-21 22:05, LathaKannan Arumugam via groups.io wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <div> <p class="MsoNormal" style="background:white"><span style="color:#212121">Can you please help us on this issues? <o:p></o:p></span></p> </div> <div id="x_ms-outlook-mobile-signature"> <p class="MsoNormal">Get <a href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2FAAb9ysg&data=04%7C01%7CBret.Barkelew%40microsoft.com%7C6ba252758f3d4ef4eb2208d93b1c8cf8%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637605816087564776%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=7z98WyQ%2BYboLv47ti6v2Fe2iZbOWzuCJAVo0uYD4R7Q%3D&reserved=0"> Outlook for Android</a><o:p></o:p></p> </div> <div class="MsoNormal" align="center" style="text-align:center"> <hr size="2" width="98%" align="center"> </div> <div id="x_divRplyFwdMsg"> <p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a> <a href="mailto:devel@edk2.groups.io"> <devel@edk2.groups.io></a> on behalf of LathaKannan Arumugam via groups.io <a href="mailto:larumugam=microsoft.com@groups.io"> <larumugam=microsoft.com@groups.io></a><br> <b>Sent:</b> Friday, June 25, 2021 1:11:42 PM<br> <b>To:</b> Bret Barkelew <a href="mailto:Bret.Barkelew@microsoft.com"><Bret.Barkelew@microsoft.com></a>; Rabeda, Maciej <a href="mailto:maciej.rabeda@linux.intel.com"><maciej.rabeda@linux.intel.com></a>; <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a> <a href="mailto:devel@edk2.groups.io"> <devel@edk2.groups.io></a><br> <b>Subject:</b> Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6</span> <o:p></o:p></p> <div> <p class="MsoNormal"> <o:p></o:p></p> </div> </div> <div> <div> <p class="xxmsonormal">Any inputs?<o:p></o:p></p> <p class="xxmsonormal">We kind of blocked on this for a week. Kindly look into packet capture and suggest a path forward.<o:p></o:p></p> <p class="xxmsonormal"> <o:p></o:p></p> <p class="xxmsonormal"> <o:p></o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="xxmsonormal"><b>From:</b> LathaKannan Arumugam <br> <b>Sent:</b> Friday, June 25, 2021 9:23 AM<br> <b>To:</b> Bret Barkelew <a href="mailto:Bret.Barkelew@microsoft.com"><Bret.Barkelew@microsoft.com></a>; Rabeda, Maciej <a href="mailto:maciej.rabeda@linux.intel.com"><maciej.rabeda@linux.intel.com></a>; <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a><br> <b>Subject:</b> RE: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6<o:p></o:p></p> </div> </div> <p class="xxmsonormal"> <o:p></o:p></p> <p class="xxmsonormal">Attached packet captured from server.<o:p></o:p></p> <p class="xxmsonormal"> <o:p></o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="xxmsonormal"><b>From:</b> Bret Barkelew <<a href="mailto:Bret.Barkelew@microsoft.com">Bret.Barkelew@microsoft.com</a>> <br> <b>Sent:</b> Friday, June 25, 2021 9:19 AM<br> <b>To:</b> Rabeda, Maciej <<a href="mailto:maciej.rabeda@linux.intel.com">maciej.rabeda@linux.intel.com</a>>; <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a>; LathaKannan Arumugam <<a href="mailto:larumugam@microsoft.com">larumugam@microsoft.com</a>><br> <b>Subject:</b> Re: [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6<o:p></o:p></p> </div> </div> <p class="xxmsonormal"> <o:p></o:p></p> <div> <div> <div> <p class="xxmsonormal" style="background:white"><span style="color:black">+ <a id="OWAAM331444" href="mailto:larumugam@microsoft.com"> <span style="font-family:"Calibri",sans-serif;text-decoration:none">@LathaKannan Arumugam</span></a></span><o:p></o:p></p> </div> </div> <div id="x_x_ms-outlook-mobile-signature"> <div> <p class="xxmsonormal"> <o:p></o:p></p> </div> <div> <p class="xxmsonormal">- Bret<o:p></o:p></p> </div> </div> </div> <div class="MsoNormal" align="center" style="text-align:center"> <hr size="1" width="98%" align="center"> </div> <div id="x_x_divRplyFwdMsg"> <p class="xxmsonormal"><b><span style="color:black">From:</span></b><span style="color:black"> Rabeda, Maciej <<a href="mailto:maciej.rabeda@linux.intel.com">maciej.rabeda@linux.intel.com</a>><br> <b>Sent:</b> Friday, June 25, 2021 7:40:16 AM<br> <b>To:</b> <a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a> <<a href="mailto:devel@edk2.groups.io">devel@edk2.groups.io</a>>; Bret Barkelew <<a href="mailto:Bret.Barkelew@microsoft.com">Bret.Barkelew@microsoft.com</a>>; Bret Barkelew <<a href="mailto:Bret.Barkelew@microsoft.com">Bret.Barkelew@microsoft.com</a>><br> <b>Subject:</b> [EXTERNAL] Re: [edk2-devel] NetworkPkg: Unexpected DHCP RELEASE after PXE server reply on IPv6</span> <o:p></o:p></p> <div> <p class="xxmsonormal"> <o:p></o:p></p> </div> </div> <div> <p class="xxmsonormal" style="margin-bottom:12.0pt">Looking at it. Any chance to get Wireshark trace for this scenario?<o:p></o:p></p> <div> <p class="xxmsonormal">On 25-Jun-21 09:25, brbarkel via groups.io wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <p class="xxmsonormal">Just poking this to see if anyone has any ideas. Thanks! <o:p> </o:p></p> </blockquote> <p class="xxmsonormal"> <o:p></o:p></p> </div> </div> </div> </blockquote> <p class="MsoNormal"><o:p> </o:p></p> </blockquote> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal"></o:p></span></p> </div> </div> </body> </html> <div width="1" style="color:white;clear:both">_._,_._,_</div> <hr> Groups.io Links:<p> You receive all messages sent to this group. <p> <a target="_blank" href="https://edk2.groups.io/g/devel/message/77298">View/Reply Online (#77298)</a> | | <a target="_blank" href="https://groups.io/mt/83787800/1813853">Mute This Topic</a> | <a href="https://edk2.groups.io/g/devel/post">New Topic</a><br> <a href="https://edk2.groups.io/g/devel/editsub/1813853">Your Subscription</a> | <a href="mailto:devel+owner@edk2.groups.io">Contact Group Owner</a> | <a href="https://edk2.groups.io/g/devel/unsub">Unsubscribe</a> [edk2-devel-archive@redhat.com]<br> <div width="1" style="color:white;clear:both">_._,_._,_</div>