networks - network name data base
The /etc/networks file associates Internet (IP) addresses with
official network names and aliases. This allows the user to refer to
a network by a symbolic name instead of using an Internet address.
For each network, a single line should be present with the following
<official network name> <network number> <aliases>
Aliases are other names under which a network is known. For example:
loop 192.46.4 testlan
where the network named loop is also called testlan.
A line cannot start with a blank (tab or space character). Items are
separated by any number or combination of blanks. A # character
indicates the beginning of a comment. Characters from the # up to the
end of the line are not interpreted by routines which search the file.
Trailing blanks are allowed at the end of a line. For the Internet,
this file is normally created from the official network database
maintained at the Network Information Control Center (NIC), though
local changes may be required to bring it up-to-date regarding
unofficial aliases and/or unknown networks.
Network numbers can be specified in conventional Internet dot notation
using the inet_network() routine from the internet address
manipulation library (see inet(3N). Network names can contain any
printable character other than a white space, new-line, or comment
networks was developed by the University of California, Berkeley.
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000