ramiro@debian:~$ cat /var/lib/dhcp3/dhclient.*
lease {
  interface "eth0";
  fixed-address 10.1.1.2;
  option subnet-mask 255.0.0.0;
  option routers 10.1.1.1;
  option dhcp-lease-time 3600;
  option dhcp-message-type 5;
  option domain-name-servers 10.1.1.1,10.1.1.254;
  option dhcp-server-identifier 10.1.1.1;
  renew 5 2010/07/02 19:11:43;
  rebind 5 2010/07/02 19:36:44;
  expire 5 2010/07/02 19:44:14;
}
lease {
  interface "eth0";
  fixed-address 10.1.1.2;
  option subnet-mask 255.0.0.0;
  option routers 10.1.1.1;
  option dhcp-lease-time 3600;
  option dhcp-message-type 5;
  option domain-name-servers 10.1.1.1,10.1.1.254;
  option dhcp-server-identifier 10.1.1.1;
  renew 5 2010/07/02 19:40:38;
  rebind 5 2010/07/02 20:04:13;
  expire 5 2010/07/02 20:11:43;
}
lease {
  interface "eth0";
  fixed-address 10.1.1.2;
  option subnet-mask 255.0.0.0;
  option routers 10.1.1.1;
  option dhcp-lease-time 3600;
  option dhcp-message-type 5;
  option domain-name-servers 10.1.1.1,10.1.1.254;
  option dhcp-server-identifier 10.1.1.1;
  renew 5 2010/07/02 20:10:03;
  rebind 5 2010/07/02 20:33:08;
  expire 5 2010/07/02 20:40:38;
}