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-.\"     $OpenBSD: inet_lnaof.3,v 1.4 2019/08/30 20:06:07 jmc Exp $
-.\"     $NetBSD: inet.3,v 1.7 1997/06/18 02:25:24 lukem Exp $
-.\"
-.\" Copyright (c) 1983, 1990, 1991, 1993
-.\"     The Regents of the University of California.  All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     @(#)inet.3      8.1 (Berkeley) 6/4/93
-.\"
-.Dd $Mdocdate: August 30 2019 $
-.Dt INET_LNAOF 3
-.Os
-.Sh NAME
-.Nm inet_makeaddr ,
-.Nm inet_netof ,
-.Nm inet_lnaof
-.Nd routines for manipulating classful Internet Protocol version 4 (IPv4) addresses
-.Sh SYNOPSIS
-.In arpa/inet.h
-.Ft struct in_addr
-.Fn inet_makeaddr "in_addr_t net" "in_addr_t lna"
-.Ft in_addr_t
-.Fn inet_netof "struct in_addr in"
-.Ft in_addr_t
-.Fn inet_lnaof "struct in_addr in"
-.Sh DESCRIPTION
-As originally designed,
-IP version 4 split each address into a network part and local network
-address part, encoding that split into the address itself.
-It is frequency-encoded;
-the most-significant bit is clear in Class A addresses,
-in which the high-order 8 bits are the network number.
-Class B addresses use the high-order 16 bits as the network field,
-and Class C addresses have a 24-bit network part.
-.Pp
-The routine
-.Fn inet_makeaddr
-takes an Internet network number and a local
-network address and constructs an Internet address
-from it.
-.Pp
-The routines
-.Fn inet_netof
-and
-.Fn inet_lnaof
-break apart Internet host addresses, returning
-the network number and local network address part,
-respectively.
-.Pp
-All Internet addresses are returned in network
-order (bytes ordered from left to right).
-All network numbers and local address parts are
-returned as machine format integer values.
-.Sh SEE ALSO
-.Xr gethostbyname 3 ,
-.Xr inet_addr 3 ,
-.Xr inet_net_ntop 3 ,
-.Xr hosts 5
-.Sh HISTORY
-The
-.Nm inet_makeaddr ,
-.Nm inet_lnaof ,
-and
-.Nm inet_netof
-functions appeared in
-.Bx 4.2 .