Accident use of arp -d command:Not able to login to server

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LEARN ABOUT BSD

arp

ARP(8C) 																   ARP(8C)

NAME

       arp - address resolution display and control

SYNOPSIS

       arp hostname
       arp -a [ vmunix ] [ kmem ]
       arp -d hostname
       arp -s hostname ether_addr [ temp ] [ pub ] [ trail ]
       arp -f filename

DESCRIPTION

       The  arp  program  displays  and  modifies  the	Internet-to-Ethernet  address  translation  tables used by the address resolution protocol
       (arp(4p)).

       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
       notation.   With  the  -a  flag,  the  program  displays  all  of  the current ARP entries by reading the table from the file kmem (default
       /dev/kmem) based on the kernel file vmunix (default /vmunix).

       With the -d flag, a super-user may delete an entry for the host called hostname.

       The -s flag is given to 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.	The word trail indicates that trailer encapsulations may be sent to this host.

       The  -f	flag  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 ] [ trail ]

       with argument meanings as given above.

SEE ALSO

       inet(3N), arp(4P), ifconfig(8C)

4.3 Berkeley Distribution					   May 20, 1986 							   ARP(8C)

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