multiple concurrent dhcp leases for the same mac?

suprstar · 11-09-2011, 10:19 AM

Ubuntu 10.04 LTS, dhcp3-server is installed via apt-get, nothing fancy in the config.

I have some scripts that parse out dhcpd.leases for quick easy monitoring, I noticed this.. There are 890 lease sections in the file, but only 551 unique mac's. At least the all mac/ip combinations are unique, but it's screwing up my reporting. Is this supposed to be happening? I see the "option agent.unknown-6" line is different in every entry.

Code:

lease 10.0.152.107 {
  starts 3 2011/11/09 14:34:13;
  ends 4 2011/11/10 14:34:13;
  cltt 3 2011/11/09 14:34:13;
  binding state active;
  next binding state free;
  hardware ethernet ac:81:12:11:02:7c;
  uid "\001\254\201\022\021\002|";
  option agent.unknown-6 "10977F1521FC6AC045FB61172E08D939@mydomain.com";
  option agent.remote-id ac:81:12:11:2:7c;
}
lease 10.0.152.107 {
  starts 3 2011/11/09 14:35:20;
  ends 4 2011/11/10 14:35:20;
  cltt 3 2011/11/09 14:35:20;
  binding state active;
  next binding state free;
  hardware ethernet ac:81:12:11:02:7c;
  uid "\001\254\201\022\021\002|";
  option agent.unknown-6 "65818B133529E07501AD28103E2D8ECC@mydomain.com";
  option agent.remote-id ac:81:12:11:2:7c;
}
lease 10.0.152.107 {
  starts 3 2011/11/09 14:35:49;
  ends 4 2011/11/10 14:35:49;
  cltt 3 2011/11/09 14:35:49;
  binding state active;
  next binding state free;
  hardware ethernet ac:81:12:11:02:7c;
  uid "\001\254\201\022\021\002|";
  option agent.unknown-6 "5013227A65F8C3485B126FA01DA17ADC@mydomain.com";
  option agent.remote-id ac:81:12:11:2:7c;
}
lease 10.0.152.107 {
  starts 3 2011/11/09 14:36:24;
  ends 4 2011/11/10 14:36:24;
  cltt 3 2011/11/09 14:36:24;
  binding state active;
  next binding state free;
  hardware ethernet ac:81:12:11:02:7c;
  uid "\001\254\201\022\021\002|";
  option agent.unknown-6 "4A9496D6181BA2B21E967FC711832047@mydomain.com";
  option agent.remote-id ac:81:12:11:2:7c;
}