Manual pages › File formats and configuration files (4)
netmasks(4)
network mask data base
From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.
NAME
netmasks - network mask data base
DESCRIPTION
The netmasks file contains network masks used to implement IP standard subnetting. For each network that is subnetted, a single line should exist in this file with the network number, any number of SPACE or TAB characters, and the network mask to use on that network. Network numbers and masks may be specified in the conventional IP `.' notation (like IP host addresses, but with zeroes for the host part). For example,
128.32.0.0 255.255.255.0
can be used to specify that the Class B network 128.32.0.0 should have eight bits of subnet field and eight bits of host field, in addition to the standard sixteen bits in the network field.
FILES
/etc/netmasks
SEE ALSO
ifconfig(1M) Postel, Jon, and Mogul, Jeff, Internet Standard Subnetting Procedure, RFC 950, Network Information Center, SRI Interna- tional, Menlo Park, Calif., August 1985.