<html 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=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Helvetica Neue";
panose-1:2 0 5 3 0 0 0 2 0 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:3.0cm 2.0cm 3.0cm 2.0cm;}
div.WordSection1
{page:WordSection1;}
--></style>
</head>
<body lang="DA" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-GB">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Another suggestion:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Have you checked with wireshark what the request and offer is?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">We have had the same issue when it came to unicast and broadcast offers.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">If the host had broadcast flag set in discover, it would reject any offers sent as unicast.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Most clients do not differ on this, but PXE, UEFI, iDRAC and some specific windows 7 installations CAN filter them if there is the slightest mismatch.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Kea 0.9 and 1.0 had default unicast response even though client asked for broadcast. Was changed in 1.1 I think.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Br,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thomas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Kea-users <kea-users-bounces@lists.isc.org> on behalf of Joelson Vendramin <jtvendramin@yahoo.com.br><br>
<b>Date: </b>Friday, 15 February 2019 at 12.05<br>
<b>To: </b>"KEA-Users (kea-users@lists.isc.org)" <kea-users@lists.isc.org>, Klaus Steden <klausfiend@gmail.com><br>
<b>Subject: </b>Re: [Kea-users] Hosts refusing lease offers?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">Hi Klaus,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">I remember a similar tricky situation. Some clients complaining about leases offers.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">Then I find a strange solution: configuring KEA to send "renew-timer" and "rebind-timer" optional parameters together with "valid-lifetime" (mandatory).<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">This way:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:12.0pt;font-family:"Courier New""> "valid-lifetime": X,<br>
"renew-timer": 50% * X,<br>
"rebind-timer": 87,5% * X,<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">Hope this clue helps you someway.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">Regards,<o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">--<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New"">Joelson Vendramin<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
</div>
</div>
<div id="ydpe40d3534yahoo_quoted_0736961137">
<div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Em quinta-feira, 14 de fevereiro de 2019 22:36:38 BRST, Klaus Steden <klausfiend@gmail.com> escreveu:
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<div id="ydpe40d3534yiv1040069820">
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Hi there,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">I've got a bit of a puzzler on my hands. We've racked some new gear and are preparing to provision it.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Scope definitions have been added to Kea, and are active.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Hosts are on the network, and are generating DHCP requests.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Kea is responding as expected and offering leases, but none of these machines (6 racks worth) are accepting the offers, leaving them stranded.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">The hardware is Dell, so it's actually the iDRAC that's not leasing, but a different batch of similar hardware in other racks (installed two weeks ago) had no such
issues.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">We're reasonably confident that it's not something on the switches, but for the life of me I can't identify why these aren't accepting leases.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">I've attached a sample of the debug output in the log (cranked up to 99) with only DNS info redacted.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Again, the most confusing thing here is that a comparable platform in the same data center in different racks had no issues, and the only change is additional DHCP
scopes.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">thanks,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Klaus<o:p></o:p></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">_______________________________________________<br>
Kea-users mailing list<br>
<a href="mailto:Kea-users@lists.isc.org" target="_blank">Kea-users@lists.isc.org</a><br>
<a href="https://lists.isc.org/mailman/listinfo/kea-users" target="_blank">https://lists.isc.org/mailman/listinfo/kea-users</a><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</body>
</html>