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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Are you able to release this patch on an as-is basis? Or do you have any indication when this would roll into an release?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tom<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> dhcp-users-bounces@lists.isc.org [mailto:dhcp-users-bounces@lists.isc.org]
<b>On Behalf Of </b>Shawn Routhier<br>
<b>Sent:</b> maandag 29 juni 2015 19:30<br>
<b>To:</b> Users of ISC DHCP<br>
<b>Subject:</b> Re: DHCP server balancing issue<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have been reminded by a co-worker that we also found and fixed an issue <o:p></o:p></p>
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<p class="MsoNormal">between delayed-ack and failover recently. This patch has not been released yet.<o:p></o:p></p>
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<p class="MsoNormal">So in addition to migrating to a more recent version you may want to disable<o:p></o:p></p>
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<p class="MsoNormal">delayed-ack for the time being.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">regards,<o:p></o:p></p>
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<p class="MsoNormal">Shawn<o:p></o:p></p>
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<p class="MsoNormal">On Jun 29, 2015, at 10:17 AM, de Brouwer Tom (ST-CO/ENG5.1) <<a href="mailto:Tom.deBrouwer@nl.bosch.com">Tom.deBrouwer@nl.bosch.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks. I will do that.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Would these fixes from 4.2 / 4.3 have been merged into 4.1-R11, or is that something I should have a look at myself?</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks again!</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span class="apple-converted-space"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> </span></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><a href="mailto:dhcp-users-bounces@lists.isc.org"><span style="color:purple">dhcp-users-bounces@lists.isc.org</span></a><span class="apple-converted-space"> </span>[<a href="mailto:dhcp-users-bounces@lists.isc.org"><span style="color:purple">mailto:dhcp-users-bounces@lists.isc.org</span></a>]<span class="apple-converted-space"> </span><b>On
Behalf Of<span class="apple-converted-space"> </span></b>Shawn Routhier<br>
<b>Sent:</b><span class="apple-converted-space"> </span>maandag 29 juni 2015 18:30<br>
<b>To:</b><span class="apple-converted-space"> </span>Users of ISC DHCP<br>
<b>Subject:</b><span class="apple-converted-space"> </span>Re: DHCP server balancing issue</span><o:p></o:p></p>
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<p class="MsoNormal">On Jun 29, 2015, at 8:46 AM, Gregory Sloop <<a href="mailto:gregs@sloop.net"><span style="color:purple">gregs@sloop.net</span></a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hi,<br>
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I’m experiencing some issues with my redundant ISC DHCP setup, I’m using version “dhcp-4.1-ESV-R4”, compiled with “--enable-delayed-ack”.<br>
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The issue I’m experiencing is that the balancing suddenly stops and never restores correctly, and a such only half of my clients get IP addresses assigned. I debugged this currently to the stage that one of the DHCP servers get’s into the “communications-interrupted”
state and therefore does not allow to balance the pool (I think). Sometimes it takes 2 weeks, sometime a few days before the servers gets into this state. Restarting dhcpd resolves this issue.<br>
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In the slave log, I get the warning “Got POOLREQ, answering negatively! Peer may be out of leases or database inconsistent.”<br>
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In the master log, I get the warning ”pool response: 0 leases”<br>
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Under normal operations I see the master logging “balancing pool 8fe8f68 192.168.6.0/24 total 241 free 20 backup 81 lts -30 max-own (+/-)10” every hour, once I start experiencing this issue the log is changed into “balancing pool 8fe8f68 192.168.6.0/24
total 241 free 19 backup 81 lts -31 max-own (+/-)10 (requesting peer rebalance!)” Which I think means it gets to a critical available lease threshold.<span class="apple-converted-space"> </span><br>
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What could be causing this issue? I couldn’t find anything in the release notes of dhcp-4.1-ESV-R11 which explicitly points to this issue, so I’m not sure whether upgrading makes sense.<br>
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Thanks,<br>
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Tom</span><o:p></o:p></p>
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<span style="font-size:9.0pt;font-family:"Courier New"">I believe there are a number of load-balancing/fail-over bugs/corner-cases in 4.1 versions that are fixed in 4.2 and newer.</span><o:p></o:p></p>
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<p class="MsoNormal">Most bugs are generally fixed in all current releases. We have fixed several failover issues in more recent 4.1 as well as 4.2 or 4.3.<o:p></o:p></p>
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<p class="MsoNormal">Some of the items we fixed could have odd results, if you are having issues with failover upgrading to R11 is a good idea.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:9.0pt;font-family:"Courier New""><br>
You might do a search of the archives and see if you can find someone talking about them, but IIRC, they exist and are hard to nail down and, again IIRC, the "solution" I've seen is "try something more current." (i.e. 4.2+)<br>
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HTH<br>
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-Greg</span><o:p></o:p></p>
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<p class="MsoNormal">regards,<o:p></o:p></p>
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<p class="MsoNormal">Shawn<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">_______________________________________________<br>
dhcp-users mailing list<br>
</span><a href="mailto:dhcp-users@lists.isc.org"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:purple">dhcp-users@lists.isc.org</span></a><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif""><br>
</span><a href="https://lists.isc.org/mailman/listinfo/dhcp-users"><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:purple">https://lists.isc.org/mailman/listinfo/dhcp-users</span></a><o:p></o:p></p>
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