arp(1M)                         TCP/IP R4.11                         arp(1M)


NAME
       arp - address resolution display and control

SYNOPSIS
       /usr/bin/arp [ -i dev ] -a
       /usr/bin/arp [ -i dev ] host
       /usr/bin/arp [ -i dev ] -d host
       /usr/bin/arp [ -i dev ] -s host hardwareaddr [ temp ] [ pub ]
       /usr/bin/arp [ -i dev ] -f file

DESCRIPTION
       The arp program displays and modifies the Internet-to-hardware
       address translation tables used by the Address Resolution Protocol
       arp(6P) and the Reverse Address Resolution Protocol rarp(6P).  The
       hardware address is the Ethernet, 802.3, or token ring address.

       When you use the -a option, the program displays all of the current
       ARP entries by reading the internal kernel tables (using the
       appropriate ioctl calls).  When you use this option, you do not have
       to specify the name of a host or of a file.

       With host as the argument, the program displays the current ARP entry
       for that host.  You may specify the host by name or by number, using
       Internet standard dot notation.

       With the -d option, a user with appropriate privilege may delete an
       entry for the host named host.

       Use the -s option to create an ARP entry for the host named host with
       the hardware address hardwareaddr.  The hardware address is
       specified as six hexadecimal bytes separated by colons.  The
       resulting ARP entry is permanent unless the word temp is specified on
       the command line.  If the word pub is specified, the entry will be
       "published"; that is, this system will act as an ARP server,
       responding to requests for host even though the host address is not
       its own.  Only a user with appropriate privilege may set a new entry
       in the table.

       The -f option causes the file named file to be read and multiple
       entries to be set in the ARP tables.  Only a user with appropriate
       privilege may use this option.  Entries in the file should be of the
       following form:

              host hardwareaddr [ temp ] [ pub ]

       with argument meanings as described above.

       If you specify the -i option, only the ARP table for the interface
       named dev will be searched.

SEE ALSO
       ifconfig(1M), inet(6F), arp(6P), rarp(6P).
       capdefaults(5), appropriateprivilege(5).

NOTES
       For systems supporting the DG/UX Capability Option, appropriate
       privilege is defined as having one or more specific capabilities
       enabled in the effective capability set of the user.  See
       capdefaults(5) for the default capabilities for this command.

       On systems without the DG/UX Capability Option, appropriate privilege
       means that your process has an effective UID of root. See the
       appropriateprivilege(5) man page for more information.




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