netmasks(4)netmasks(4)NAMEnetmasks - DHCP server database
DESCRIPTION
The netmasks file is employed by joind, the DHCP server, to inform it
about any networks having non-standard subnet masks. This file is only
needed on those platforms which don't provide a netmasks database,
either as a text file or as an NIS map. Each network whose mask is
other than the standard A, B, or C mask should have an entry in this
file. Each entry has two fields: the network and the mask. The net‐
work may be written with or without zeros. See join.ipaddresses(4) for
details.
This file also supports variable subnetting. If each subnetwork is
further divided into subnetworks with a variable mask, the subnetworks
can also appear on the LHS.
FORMAT
Blank lines and lines beginning with "#" are ignored. Entries are sep‐
arated from one another by newlines. Entries consist of two fields:
the network number (expressed as an IP address), and the network mask
expressed as an IP address.
RELATED INFORMATION
Commands: joind(8), join.ipaddresses(4). delim off
netmasks(4)