10539701cSbostic.\" Copyright (c) 1985, 1991, 1993 20539701cSbostic.\" The Regents of the University of California. All rights reserved. 3dd691317Smckusick.\" 43faee703Strent.\" %sccs.include.redist.man% 5dd691317Smckusick.\" 6*f922abbaSbostic.\" @(#)arp.8 8.2 (Berkeley) 04/27/95 70cac7ccfSbostic.\" 813251ec2Scael.Dd 913251ec2Scael.Dt ARP 8 1013251ec2Scael.Os BSD 4.3 1113251ec2Scael.Sh NAME 1213251ec2Scael.Nm arp 1313251ec2Scael.Nd address resolution display and control 1413251ec2Scael.Sh SYNOPSIS 1513251ec2Scael.Nm arp 1613251ec2Scael.Ar hostname 1713251ec2Scael.Nm arp 1813251ec2Scael.Fl a 1913251ec2Scael.Nm arp 2013251ec2Scael.Fl d Ar hostname 2113251ec2Scael.Nm arp 2213251ec2Scael.Fl s Ar hostname ether_addr 2313251ec2Scael.Op Ar temp 2413251ec2Scael.Op Ar pub 2513251ec2Scael.Nm arp 2613251ec2Scael.Fl f Ar filename 2713251ec2Scael.Sh DESCRIPTION 28dd691317SmckusickThe 2913251ec2Scael.Nm arp 30dd691317Smckusickprogram displays and modifies the Internet-to-Ethernet address translation 318441610fSkarelstables used by the address resolution protocol 3213251ec2Scael.Pq Xr arp 4 . 3313251ec2ScaelWith no flags, the program displays the current 3413251ec2Scael.Tn ARP 3513251ec2Scaelentry for 3613251ec2Scael.Ar hostname . 378441610fSkarelsThe host may be specified by name or by number, 388441610fSkarelsusing Internet dot notation. 3913251ec2Scael.Pp 4013251ec2ScaelAvailable options: 4113251ec2Scael.Bl -tag -width Ds 4213251ec2Scael.It Fl a 4313251ec2ScaelThe program displays all of the current 4413251ec2Scael.Tn ARP 451eb208bbStorekentries. 4613251ec2Scael.It Fl d 4713251ec2ScaelA super-user may delete an entry for the host called 4813251ec2Scael.Ar hostname 4913251ec2Scaelwith the 5013251ec2Scael.Fl d 5113251ec2Scaelflag. 5213251ec2Scael.It Fl s Ar hostname ether_addr 5313251ec2ScaelCreate an 5413251ec2Scael.Tn ARP 5513251ec2Scaelentry for the host called 5613251ec2Scael.Ar hostname 57dd691317Smckusickwith the Ethernet address 5813251ec2Scael.Ar ether_addr . 59dd691317SmckusickThe Ethernet address is given as six hex bytes separated by colons. 60dd691317SmckusickThe entry will be permanent unless the word 6113251ec2Scael.Ar temp 62dd691317Smckusickis given in the command. 63dd691317SmckusickIf the word 6413251ec2Scael.Ar pub 658441610fSkarelsis given, the entry will be "published"; i.e., this system will 6613251ec2Scaelact as an 6713251ec2Scael.Tn ARP 6813251ec2Scaelserver, 698441610fSkarelsresponding to requests for 7013251ec2Scael.Ar hostname 718441610fSkarelseven though the host address is not its own. 7213251ec2Scael.It Fl f 7313251ec2ScaelCauses the file 7413251ec2Scael.Ar filename 7513251ec2Scaelto be read and multiple entries to be set in the 7613251ec2Scael.Tn ARP 7713251ec2Scaeltables. Entries 78dd691317Smckusickin the file should be of the form 7913251ec2Scael.Pp 8013251ec2Scael.Bd -filled -offset indent -compact 8113251ec2Scael.Ar hostname ether_addr 8213251ec2Scael.Op Ar temp 8313251ec2Scael.Op Ar pub 8413251ec2Scael.Ed 8513251ec2Scael.Pp 86dd691317Smckusickwith argument meanings as given above. 8713251ec2Scael.El 8813251ec2Scael.Sh SEE ALSO 8913251ec2Scael.Xr inet 3 , 9013251ec2Scael.Xr arp 4 , 9113251ec2Scael.Xr ifconfig 8 9213251ec2Scael.Sh HISTORY 9313251ec2ScaelThe 9413251ec2Scael.Nm 9513251ec2Scaelcommand appeared in 9613251ec2Scael.Bx 4.3 . 97