DHCP modifiers

Modifiers are items that change some aspect of a particular container, such as access or lease time.

Define the address and option pools before modifying the container. The most common modifiers are leasetimedefault, supportBootp, and supportUnlistedclients.

Defines the amount of time an address is to be leased to a client.
Defines whether or not the server responds to BOOTP clients.
Indicates whether clients are to be explicitly defined by a client statement to receive addresses. The value for supportUnlistedClients can be none, dhcp, bootp, or both. This allows for you to restrict access to bootp client and allow all DHCP clients to get addresses.

Other modifiers are listed in DHCP server file syntax for db_file database.