NAME
     netmasks - network mask database

SYNOPSIS
     /etc/inet/netmasks
     /etc/netmasks

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 net-
     work mask to use on that network.  Network numbers and masks
     may  be specified in the conventional IP dot (`.')  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.

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.

NOTES
     /etc/inet/netmasks is the official SVR4 name of the netmasks
     file.  The symbolic link /etc/netmasks exists for BSD compa-
     tibility.