<div dir="ltr">I was able to fix this problem by changing this (under <span style="font-family:menlo;font-size:11px">"Dhcp6": { )</span>:<br><div><br></div><div><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"preferred-lifetime": 600,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"valid-lifetime": 600,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"renew-timer": 500,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"rebind-timer": 400,</span></p><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div class="gmail_extra">To this:</div><div class="gmail_extra"><br></div><div class="gmail_extra"><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"valid-lifetime": 400,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"renew-timer": 100,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"rebind-timer": 200,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"preferred-lifetime": 300,</span></p><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div class="gmail_quote">I'm sure the order didn't matter.  However, I believe the problem was that renew-timer was higher than rebind-timer before.  If that is indeed the problem, might want to have the server check for that and refuse to run if it is encountered.</div><div class="gmail_quote"><br></div><div class="gmail_quote">All three clients are now able to get an address.</div><div class="gmail_quote"><br></div><div class="gmail_quote">I was able to recreate the clients not getting an address by simply setting:</div><div class="gmail_quote"><br></div><div class="gmail_quote"><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"renew-timer": 300,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"rebind-timer": 200,</span></p><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures">This is valid:</span></div><div><span style="font-variant-ligatures:no-common-ligatures"><br></span></div><div><span style="font-variant-ligatures:no-common-ligatures"><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"renew-timer": 200,<br></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"rebind-timer": 200,</span></p>
<p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">This is also valid:</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"valid-lifetime": 400,</span></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"renew-timer": 500,</span></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><span style="font-variant-ligatures:no-common-ligatures">"rebind-timer": 600,</span></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">


</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"preferred-lifetime": 300,<br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">It appears that it works as long as the renew timer is lower or the same as the rebind timer.</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">Further testing shows that "preferred-lifetime" cannot be larger than "valid-lifetime" as:</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"valid-lifetime": 600,<br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"preferred-lifetime": 900,<br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">does not work but:</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"valid-lifetime": 600,<br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">"preferred-lifetime": 600,</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">does.</p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo"><br></p><p style="margin:0px;font-size:11px;line-height:normal;font-family:menlo">Server does not complain about any of these scenarios.  Just food for thought that you might want it to complain.</p></span></div></div></div></div></div>