.\"	$NetBSD: arp.9,v 1.5 1997/03/16 20:24:08 is Exp $
.\"
.\" Copyright (c) 1997 Ignatios Souvatzis.
.\" All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
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.\"    must display the following acknowledgement:
.\"	This product includes software developed for the NetBSD Project
.\"	by Ignatios Souvatzis
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.Dd Mar 3, 1997
.Dt ARP 9
.Os NetBSD
.Sh NAME
.Nm ARP
.Nd externally visible ARP functions
.Sh SYNOPSIS
.Fd #include <netinet/if_inarp.h>
.Ft void
.Fn arp_ifinit "struct ifnet *ifp" "struct ifaddr *ifa"
.Sh DESCRIPTION
The
.Nm 
functions provide the interface between the
.Nm 
module and the network drivers which need
.Nm 
functionality.

.Bl -tag -width "arp_ifinit()"
.It Fn arp_ifinit
Sets up the 
.Nm
specific fields in 
.Fa ifa .
Additionally, it sends out a gratitious ARP request on 
.Fa ifp ,
so that other machines are warned that we have a new address and
duplicate addresses can be detected.
.El

.Sh RETURN VALUES
None.

.\" .Sh ERRORS

.Sh SEE ALSO
.Xr ifattach 9 ,
.Xr ether_ifattach 9 ,
.Xr fddi_ifattach 9 ,
.Xr arc_ifattach 9 .

.br
Plummer, D., "RFC826", An Ethernet Address Resolution Protocol.

.Sh AUTHORS
UCB CSRG (original implementation)
.br
Ignatios Souvatzis (support for non-Ethernet)

.\" .Sh BUGS

.Sh STANDARDS

RFC 826

.Sh HISTORY
Rewritten to support other than Ethernet link level addresses in 
.Nx 1.2d .