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<span style="font-size:8.5pt; font-family:Arial; color:#000000; font-weight:400; white-space:pre-wrap">Hi Anton,</span></p>
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<span style="font-size:8.5pt; font-family:Arial; color:#000000; font-weight:400; white-space:pre-wrap"> Have you considered dropping the DHCPRELEASE packets instead?</span></p>
<p dir="ltr" style="line-height:1.38; margin-left: 36pt; margin-top:0pt; margin-bottom:0pt">
<span style="font-size:8.5pt; font-family:Arial; color:#000000; font-weight:400; white-space:pre-wrap">You can read how this could be done in Gitlab #606 "Drop packets in DROP class" at https://gitlab.isc.org/isc-projects/kea/-/issues/606</span></p>
<br>
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<span style="font-size:8.5pt; font-family:Arial; color:#000000; font-weight:400; white-space:pre-wrap">Please refer to the Kea Arm for a discussion on the "DROP" class.</span></p>
<br>
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<span style="font-size:8.5pt; font-family:Arial; color:#000000; font-weight:400; white-space:pre-wrap">Kind Regards Peter</span></p>
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<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Kea-users <kea-users-bounces@lists.isc.org> on behalf of Anton Starikov <starikov.a@tecomgroup.ru><br>
<b>Sent:</b> 18 October 2020 19:02<br>
<b>To:</b> kea-users@lists.isc.org <kea-users@lists.isc.org><br>
<b>Subject:</b> [Kea-users] New IP address after each reboot</font>
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<p class="x_MsoNormal"><span lang="EN-US">Good afternoon! </span></p>
<p class="x_MsoNormal"><span lang="EN-US">Sorry for my english.</span></p>
<p class="x_MsoNormal"><span lang="EN-US"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US">There is a problem with Kea Dhcp4 1.6.3 (1.8 is the same).</span></p>
<p class="x_MsoNormal"><span lang="EN-US">After each reboot, the client (Ubuntu, Arch) gets a new ip address from KeaDhcp. As I understand it, this is due to the fact that Kea, after receiving DHCPRELEASE from the client, does not immediately release the address
(although it adds a line with expire = 0 to the lease-database), but does it after a while.</span></p>
<p class="x_MsoNormal"><span lang="EN-US">As an experiment, I limited the address pool to two ip. And with each reboot (interval ~ 20 seconds), the client received different addresses in a circle.</span></p>
<p class="x_MsoNormal"><span lang="EN-US">Previously, Mikrotik was used as DHCP, there was no such problem. The client rebooted and, if the address was still free, he received it back.</span></p>
<p class="x_MsoNormal"><span lang="EN-US">Is there any way to force Kea to immediately release such addresses?</span></p>
<p class="x_MsoNormal"><span lang="EN-US"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US">I tried to change the settings described in the documentation in section "10.
</span>Lease Expiration", it didn't help.</p>
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<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal"> </p>
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