<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Hi,<div><br></div><div>Shift in the system clock is part of the usecase(got this information from local team). </div><div>Also collected the pcap file by reproducing the issue. I have taken the screenshot of the pcap file where it clearly mentions about the huge lease value.</div><div><br></div><div>Im not very sure whether it is ok to attach the complete pcap file to the discussion.</div><div><br></div><div>Also could you please help me understand how the lease value is calculated? How the lease value is calculated at the server end and provided to the client? How the client lease file is updated?</div><div><br></div><div>In the current scenario(in one of the execution) where the time stamp is updated to the older value as part of the use case</div><div>Time stamp on the Server is:</div><div>date: date: Fri May 2 00:00:17 IST 2014<br></div><div><br></div><div>Time stamp on the client side is:</div><div>date: Tue May 7 15:12:08 IST 2019<br></div><div><br></div><div>From the lease file(content) on the client side:</div><div><div> option dhcp-lease-time 158253456;</div><div> option dhcp-message-type 5;</div><div> option dhcp-server-identifier 169.254.64.12;</div><div> renew 5 2021/06/11 03:34:31;</div><div> rebind 2 2023/09/26 02:07:54;</div><div> expire 0 2024/05/12 01:02:36;</div></div><div><br></div><div>This dhcp-lease-time is matching approximately to the difference in the timestamps of server and the client. <br></div><div><br></div><div>Many thanks in advance.</div><div><br></div><div>Thanks & Regards,</div><div>Muralikrishna CH</div><div><br></div><div><div><br></div></div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 7, 2019 at 1:57 AM Simon Hobson <<a href="mailto:dhcp1@thehobsons.co.uk">dhcp1@thehobsons.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Murali Krishna <<a href="mailto:muralikrishch@gmail.com" target="_blank">muralikrishch@gmail.com</a>> wrote:<br>
<br>
> While analyzing the logs, it has been observed that the system time is updated to very old time stamp(almost 5yrs back).<br>
<br>
On the server ? If this is the case, then the DHCP service is not your problem. You need to find out what's going on with the system clock - until you do that then it's pointless trying to solve other problems.<br>
<br>
On the client ? In this case, then I can only *guess* that the client service is seeing the time difference between the system clock and the end time/date it has stored, and updating something accordingly.<br>
<br>
It might help if you showed the actual log entries, not just the timestamps. In any case, the cause of the clock changing should be the focus of your investigations.<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><br><br><br><br>Thanks & Regards,<br>Muralikrishna CH<br><br></div></div></div>