<html><body><div style="font-family: Andale Mono; font-size: 10pt; color: #000000"><div data-mce-style="font-family: Andale Mono; font-size: 10pt; color: #000000;"><p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">having something like this in the dhcpd.conf file for DHCPv6:</span></p><p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><br data-mce-bogus="1"></p><p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;">on commit {<br></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> if exists dhcp6.ia-na {</span></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> log(debug,</span></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> concat( "LEASED,",</span></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> </span>"IPTIME,",binary-to-ascii(10, 32, "", substring(option dhcp6.ia-na,36,4)),","</p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"></span><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> )</span></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> );</span></p>
<p style="color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; margin: 0px; line-height: normal;" data-mce-style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"> }</span></p><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">}</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"><br data-mce-bogus="1"></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">Will produce a value for IPTIME that is equal to the time requested by the client instead of what was given by the server.</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"><br data-mce-bogus="1"></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">For example:</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"><br data-mce-bogus="1"></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">Client (Redhat Enterprise Linux 7 - ISC DHCP 4.2.5) sends a Renew for an IPv6 address via DHCPv6 requesting the following times (As seen in wireshark capture):<br></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"><br data-mce-bogus="1"></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">T1: 3600</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">T2: 5400</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">Preferred Lifetime: 7200</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">Valid Lifetime: 7500</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;"><br data-mce-bogus="1"></span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><span style="font-variant-ligatures: no-common-ligatures;" data-mce-style="font-variant-ligatures: no-common-ligatures;">Server (generic Linux - ISC DHCP 4.3.3) is configured with this time setting in the pool6 {} statement:</span></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">default-lease-time 600;<br></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Server responds with times like this (as seen in wireshark capture):</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">T1: 0</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">T2: 0</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Preferred Lifetime: 375</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Valid Lifetime: 600</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">What is logged in the log file is 7500 not 600.</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">The client lease file shows the following times:</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Renew: 0</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Rebind: 0</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Preferred Lifetime: 375</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">Valid Lifetime: 600</div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;"><br data-mce-bogus="1"></div><div style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;" data-mce-style="color: #000000; font-family: 'Andale Mono'; font-size: 10pt;">So, it seems that the dhcp options available in on commit {} are what the client sent in instead of those the server sent in response? Is that a bug? Or do I not understand how on commit {} works? I assumed that on commit {} would have access to the options as set by the server that were sent back to the client.</div></div></div></body></html>