"xid mismatch" problem is repeated infinitely

[Abu Abdulla alhanbali]

Hi,

I'm facing right now a series problem. The server was working normally till
today when it starts to log this line and repeat it infinitely:

Sep 18 08:19:29 iwandhcp-01 dhcpd: [ID 702911 local2.info] DHCPACK on
172.17.169.57 to 00:10:6d:15:cb:30 via 172.17.168.2 Sep 18 08:19:29
iwandhcp-01 dhcpd: [ID 702911 local2.info] bind update on 172.17.169.57 got
ack from dhcp-failover: xid mismatch.

The logs are in Gigs right now.
In addition the leases database repeats this part also infinitely (the
leases file is 20 MB !!):

lease 172.17.169.57 {
  starts 2 2007/09/18 04:10:51;
  ends 2 2007/10/09 04:10:51;
  tstp 5 2007/10/19 16:10:51;
  tsfp 5 2007/10/19 16:10:51;
  atsfp 5 2007/10/19 16:10:51;
  cltt 2 2007/09/18 04:10:51;
  binding state active;
  next binding state expired;
  hardware ethernet 00:10:6d:15:cb:30;
  uid "\001\000\020m\025\3130";
  option agent.remote-id 0:10:6d:15:cb:30;
}
.
.
.

The Primary configuration file is like:

*********************

ddns-update-style none;
authoritative;
log-facility local2;

failover peer "dhcp-failover"
{
  primary;
  address 216.42.2.213;
  port 520;
  peer address 197.229.240.197;
  peer port 520;
  max-response-delay 30;
  max-unacked-updates 10;
  load balance max seconds 3;
  mclt 1800;
  split 128;
}

subnet 172.17.168.0 netmask 255.255.254.0
{
  option routers 172.17.168.1;
  option subnet-mask 255.255.254.0;
  option broadcast-address 172.17.169.255;
  max-lease-time 1814400;
  default-lease-time 1814400;
  pool
  {
   failover peer "dhcp-failover";
   deny dynamic bootp clients;
   next-server 216.42.2.213;
   server-name "216.42.2.213";
   option root-path "/tftpboot";
   option tftp-server-name "216.42.2.213";
   filename "172.17.168.tlv";
   option dhcp-parameter-request-list 1,3,28,66,17,67,31;
   option bootfile-name "172.17.168.tlv";
   range 172.17.168.4 172.17.169.254;
  }
}
.
.
.

I don't know how to solve it or what is the problem actually. Can I clear
the repeated parts in the leases file since it may slow the response time.
Please help to solve the problem and how to clear the leases correctly.
I appreciate any help.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20070918/4311d8c7/attachment.html>