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ARP(8)                  FreeBSD System Manager's Manual                 ARP(8)

     arp - address resolution display and control

     arp [-n] hostname
     arp [-n] -a
     arp -d hostname [pub]
     arp -d -a
     arp -s hostname ether_addr [temp] [pub [only]]
     arp -S hostname ether_addr [temp] [pub [only]]
     arp -f filename

     The arp program displays and modifies the Internet-to-Ethernet address
     translation tables used by the address resolution protocol (arp(4)).
     With no flags, the program displays the current ARP entry for hostname.
     The host may be specified by name or by number, using Internet dot

     Available options:

     -a      The program displays or deletes all of the current ARP entries.

     -d      A super-user may delete an entry for the host called hostname
             with the -d flag.  It the pub keyword is specified, only
             ``published'' ARP entry for this host will be deleted.

             Alternatively, the -d flag may be combined with the -a flag to
             delete all entries.

     -n      Show network addresses as numbers (normally arp attempts to
             display addresses symbolically).

     -s hostname ether_addr
             Create an ARP entry for the host called hostname with the
             Ethernet address ether_addr.  The Ethernet address is given as
             six hex bytes separated by colons.  The entry will be permanent
             unless the word temp is given in the command.  If the word pub is
             given, the entry will be ``published''; i.e., this system will
             act as an ARP server, responding to requests for hostname even
             though the host address is not its own.  In this case the
             ether_addr can be given as auto in which case the interfaces on
             this host will be examined, and if one of them is found to occupy
             the same subnet, its Ethernet address will be used.  If the only
             keyword is also specified, this will create a ``published (proxy
             only)'' entry.  This type of entry is created automatically if
             arp detects that the routing table entry for hostname already

     -S hostname ether_addr
             Is just like -s except any existing ARP entry for this host will
             be deleted first.

     -f      Causes the file filename to be read and multiple entries to be
             set in the ARP tables.  Entries in the file should be of the form

                   hostname ether_addr [temp] [pub]

             with argument meanings as given above.

     inet(3), arp(4), ifconfig(8)

     The arp command appeared in 4.3BSD.

FreeBSD 11.0-PRERELEASE          June 6, 1993          FreeBSD 11.0-PRERELEASE


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