Bug#354339: Always tries to retrieve a preseed file even for not preseeded installs

[Christian Perrier <bubulle@debian.org>]

Looking closer at the logs, I see that dhclient.leases is used.

Here's this file in my vmware virtual machine while it runs th
einstaller:

lease {
  interface "eth0";
  fixed-address 192.168.7.128;
  option subnet-mask 255.255.255.0;
  option routers 192.168.7.2;
  option domain-name-servers 192.168.7.2;
  option domain-name "localdomain";
  option broadcast-address 192.168.7.255;
  option dhcp-lease-time 1800;
  option dhcp-message-type 5;
  option dhcp-server-identifier 192.168.7.254;
  renew 1 2006/2/27 23:17:01;
  rebind 1 2006/2/27 23:28:16;
  expire 1 2006/2/27 23:32:01;
}