nets - JOIN DHCP server database
The nets file is employed by joind, the JOIN DHCP server, to tell it which networks to administer and the ranges of IP addresses available for dynamic assignment on each of those networks.
Blank lines and lines beginning with the number sign (#) are ignored. Entries are separated from one another by newline characters. Entries consist of three fields: the network number (expressed as an IP address), the IP address or name of a host running joind, which dynamically configures clients on the network, and a range of available addresses for dynamic allocation to hosts on the net. The range is expressed as a pair of IP addresses separated with a dash (-). There must be no whitespace separating the dash from the IP addresses.
Several servers may administer a single network, and a single server may administer several networks. Each network-server pair may have several ranges of IP addresses available for dynamic allocation. The network and server IP addresses do not have to be repeated for each entry. A line containing a single field is assumed to be an IP range with the same server and network as the previous entry: a line of two fields is assumed to be a server address and IP range with the same network as the preceding entry.
The ranges of addresses served by each cooperating server must be disjoint. This condition is checked by the server on startup.
joind(8), join.ipaddresses(4) delim off