32.2. The ISC DHCP Server

The most common DHCP server for UNIX system is the ISC server, of which several versions have been released. The latest is version 3, but version 2 is still in common use. Release 1 uses a very different configuration file format to later versions and is not seen much anymore. The ISC DHCP server supports a wide range of options and can be configured to behave differently for different clients, networks, and address ranges.

The ISC server can be used to assign fixed addresses to hosts or addresses from certain ranges. Every host is identified by its MAC addresses, which on an Ethernet LAN is the address on the host's Ethernet card. A static IP address and other options can be associated with a particular hardware address, ...

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