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32 .\" @(#)arp.8 8.1 (Berkeley) 6/6/93
40 .Nd address resolution display and control
55 .Fl s Ar hostname ether_addr
59 .Fl S Ar hostname ether_addr
67 program displays and modifies the Internet-to-Ethernet address translation
68 tables used by the address resolution protocol
70 With no flags, the program displays the current
74 The host may be specified by name or by number,
75 using Internet dot notation.
80 The program displays or deletes all of the current
84 A super-user may delete an entry for the host called
88 flag. May be combined with the
90 flag to delete all entries.
92 Show network addresses as numbers (normally
94 attempts to display addresses symbolically).
95 .It Fl s Ar hostname ether_addr
98 entry for the host called
100 with the Ethernet address
102 The Ethernet address is given as six hex bytes separated by colons.
103 The entry will be permanent unless the word
105 is given in the command.
108 is given, the entry will be "published"; i.e., this system will
112 responding to requests for
114 even though the host address is not its own.
115 In this case the ether_addr can be given as ``auto''
116 in which case the interfaces on this host will be examined,
117 and if one of them is found to occupy the same subnet, its
118 ether_addr will be used.
119 .It Fl S Ar hostname ether_addr
122 except any existing arp entry for this host will be deleted first.
126 to be read and multiple entries to be set in the
129 in the file should be of the form
131 .Bd -filled -offset indent -compact
132 .Ar hostname ether_addr
137 with argument meanings as given above.