apparent blob of binary in dhcpd.leases

[Matt Herzog]

Hi All.

I saw something I have never seen before in my dhcpd.leases file.

It seems as if there's a big blob of binary data stuffed into the file.

I'm running isc-dhcp3-server-3.0.5_2 on FreeBSD 6.3 Stable, compiled from 
ports, i.e. patched by FreeBSD people. So here's what I see:

lease 192.168.0.34 {
  starts 1 2008/02/04 21:18:23;
  ends 2 2008/02/12 12:38:23;
  tstp 2 2008/02/12 12:38:23;
  binding state active;
  next binding state free;
  hardware ethernet 00:e0:81:21:75:e6;
}
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@

< the ^@ goes on for about 100 lines >

lease 192.168.0.21 {
  starts 4 2008/02/07 15:04:18;
  ends 5 2008/02/15 06:24:18;
  binding state active;
  next binding state free;
  hardware ethernet 00:50:2c:a5:69:55;
  client-hostname "mung";
}
lease 192.168.0.21 {
  starts 4 2008/02/07 15:04:23;
  ends 5 2008/02/15 06:24:23;
  binding state active;
  next binding state free;
  hardware ethernet 00:50:2c:a5:69:55;
  client-hostname "mung";
}
lease 192.168.0.21 {
  starts 4 2008/02/07 15:10:14;
  ends 5 2008/02/15 06:30:14;
  binding state active;
  next binding state free;
  hardware ethernet 00:50:2c:a5:69:55;
  client-hostname "mung";
}
lease 192.168.0.21 {
  starts 4 2008/02/07 15:10:21;
  ends 5 2008/02/15 06:30:21;
  binding state active;
  next binding state free;
  hardware ethernet 00:50:2c:a5:69:55;
  client-hostname "mung";