DHCP crashes due to corrupt lease file

[Sushma Reddy]

Hi,

I am running DHCP version 3.1.3 in failover. From time to time dhcp
service doesn't start on the Primary DHCP server with following message in
syslog:

Sep 23 03:01:06 dns dhcpd: Internet Systems Consortium DHCP Server V3.1.3
Sep 23 03:01:06 dns dhcpd: /var/state/dhcp/dhcpd.leases line 190608: eof in
string constant
Sep 23 03:01:06 dns dhcpd:   uid "\
Sep 23 03:01:06 dns dhcpd:       ^
Sep 23 03:01:06 dns dhcpd: /var/state/dhcp/dhcpd.leases line 190608:
semicolon expected.
Sep 23 03:01:06 dns dhcpd:   uid "\
Sep 23 03:01:06 dns dhcpd:       ^
Sep 23 03:01:06 dns dhcpd: /var/state/dhcp/dhcpd.leases line 190608:
unexpected end of file
Sep 23 03:01:06 dns dhcpd:   uid "\
Sep 23 03:01:06 dns dhcpd:       ^
Sep 23 03:01:06 dns dhcpd: Impossible condition at hash.c:54.
Sep 23 03:01:06 dns dhcpd: exiting.
Sep 23 03:01:06 dns DHCP[19187]: DHCP.SH FAILED START DHCPD

The lease file shows the following. This is the last line in the dhcpd.lease
file on the primary.

lease 10.2.2.2 {
  starts 4 2010/09/23 14:18:29;
  ends 5 2010/09/24 14:18:29;
  tstp 6 2010/09/25 02:18:29;
  tsfp 6 2010/09/25 02:15:15;
  cltt 4 2010/09/23 14:18:29;
  binding state active;
  next binding state expired;
  hardware ethernet 18:a9:05:f3:47:11;
  uid "\

I can start dhcp service successfully once I delete this lease. This
particular client (a security system) is sending DHCP DISCOVERS every 3
minutes. DHCP minimum, default and maximum lease is set to 1 day. MCLT  is
set to 1 hour. DHCP is also configured for DDNS.

I searched the mailing list archives but didn't get any concrete answer to
what is causing the lease corruption.  Has any one encountered this before?

Thanks
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