From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.7) Gecko/20020128

Description of problem:
When dhcp client requests address with DHCPREQUEST, dhcp server creates lease
with start time later than end time. And then it gives out duplicate ip
addresses. This happens only with linux dhcp clients, not windows. I'm not sure
what triggered this in the beginning, as this has not always been the case.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. obtain dhcp address for client with dhcpdiscover
2. try to obtain same address again, with dhcprequest
3. look at dhcp server lease file and there it is.

Actual Results:  dhcp server creates lease with start time one second after end
time:

lease 193.166.2.72 {
        starts 3 2002/07/17 14:12:46;
        ends 3 2002/07/17 14:12:45;
        hardware ethernet 00:50:04:8e:8d:30;
        uid 01:00:50:04:8e:8d:30;
        client-hostname "jullikka";
}


Expected Results:  Lease should have reasonable start and end times.

Additional info:

look at attachment for detail tcpdump and log information.