<html><body><div style="font-family: Andale Mono; font-size: 10pt; color: #000000"><div style="font-family: Andale Mono; font-size: 10pt; color: #000000"><div>Mark,</div><div><br data-mce-bogus="1"></div><div>That is completely normal. The device 00:03:e6:6f:42:14 previously had an address of 192.168.100.20 and attempted to renew such address. Apparently that address is not valid on the network your DHCP server is on. So, a NAK was sent followed by a discover from the client. The client and server then negotiated a 10.4.2.191 address.</div></div><div style="font-family: Andale Mono; font-size: 10pt; color: #000000"><br data-mce-bogus="1"></div><div style="font-family: Andale Mono; font-size: 10pt; color: #000000">What is the actual problem that you are having as I am not sure this has anything to do with it...<br><br><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Mark Spring" <mspring@nktelco.com><br><b>To: </b>"Users of ISC DHCP" <dhcp-users@lists.isc.org><br><b>Sent: </b>Thursday, July 20, 2017 8:31:30 AM<br><b>Subject: </b>Re: Script to run on DHCPNAK<br></blockquote></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div dir="ltr">isc, just one server here is an example<br><div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:36 dhcp dhcpd: DHCPREQUEST for 192.168.100.20 from 00:03:e6:6f:42:14 via <a href="http://10.4.0.1" target="_blank">10.4.0.1</a>: wrong net</span></i></div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:36 dhcp dhcpd: DHCPNAK on 192.168.100.20 to 00:03:e6:6f:42:14 via 10.4.0.1</span></i></div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:39 dhcp dhcpd: DHCPDISCOVER from 00:03:e6:6f:42:14 via 10.4.0.1</span></i></div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:40 dhcp dhcpd: DHCPOFFER on 10.4.2.191 to 00:03:e6:6f:42:14 via 10.4.0.1</span></i></div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:40 dhcp dhcpd: DHCPREQUEST for 10.4.2.191 (192.168.100.3) from 00:03:e6:6f:42:14 via 10.4.0.</span></i></div><div><i><span face="monospace, monospace" data-mce-style="font-family: monospace, monospace;" style="font-family: monospace, monospace;">Jul 19 10:04:40 dhcp dhcpd: DHCPACK on 10.4.2.191 to 00:03:e6:6f:42:14 via 10.4.0.1</span></i></div></div><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><br><div><div style="font-size:small">Mark Spring<br></div><span style="font-size:small">Information Systems Manager</span><br></div></div></div></div></div></div>
<br><div class="gmail_quote">On Thu, Jul 20, 2017 at 8:22 AM, perl-list <span dir="ltr"><<a href="mailto:perl-list@network1.net" target="_blank">perl-list@network1.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:Andale Mono;font-size:10pt;color:#000000"><div style="font-family:Andale Mono;font-size:10pt;color:#000000"><br>Are the NAK and ACK coming from the same server? Can you post example log messages of the NAK and ACK and related communication? I assume this is ISC DHCP that we are speaking of and not some proprietary DHCP server?</div><div style="font-family:Andale Mono;font-size:10pt;color:#000000"><br><hr id="m_7362953434195411861zwchr"><div><blockquote style="border-left:2px solid #1010ff;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt"><br></blockquote></div><div><blockquote style="border-left:2px solid #1010ff;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt"><span class=""><div dir="ltr">I am having some issues with network gear, and while arguing with vendors about who's problem it really is..I noticed that my device receives a NAK before it receives the proper IP address from our server(when the gear comes back online). If I can track this down in the logs then I can look for the ACK that follows, login to the device and reboot it properly. <br><div><div><div class="m_7362953434195411861gmail_signature"><div dir="ltr"><div><div dir="ltr"></div></div></div></div></div>
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