Short Leases for PXE-Clients

[Eustace, Glen]

Our approach to this problem was to create a number of groups for PXE
booting as I needed to set a couple of other options as well

E.g.
group {
   if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {
      option vendor-class-identifier "PXEClient";
# Set PXE Server to ALB-LABDS1
      option dhcp-server-identifier 130.123.225.4;
      next-server 130.123.225.4;
      default-lease-time 5;
      ddns-updates false;
   }
   host aklcp {
      ddns-hostname "aklcp";
      option host-name "aklcp";
      hardware ethernet 00:10:4b:f7:f3:5d;
   }
   ....
}

This has worked well for us.

Glen.