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28 .\" @(#)arp.8 8.1 (Berkeley) 6/6/93
36 .Nd address resolution display and control
53 .Fl s Ar hostname ether_addr
57 .Fl S Ar hostname ether_addr
65 utility displays and modifies the Internet-to-Ethernet address translation
66 tables used by the address resolution protocol
68 With no flags, the program displays the current
72 The host may be specified by name or by number,
73 using Internet dot notation.
76 .Bl -tag -width indent
78 The program displays or deletes all of the current
82 A super-user may delete an entry for the host called
89 keyword is specified, only the
93 for this host will be deleted.
97 flag may be combined with the
99 flag to delete all entries.
100 .It Fl i Ar interface
101 Limit the operation scope to the
105 Applicable to the display operations only.
107 Show network addresses as numbers (normally
109 attempts to display addresses symbolically).
110 .It Fl s Ar hostname ether_addr
113 entry for the host called
115 with the Ethernet address
117 The Ethernet address is given as six hex bytes separated by colons.
118 The entry will be permanent unless the word
120 is given in the command.
123 is given, the entry will be
125 i.e., this system will
129 responding to requests for
131 even though the host address is not its own.
136 in which case the interfaces on this host will be examined,
137 and if one of them is found to occupy the same subnet, its
138 Ethernet address will be used.
141 keyword is also specified, this will create a
142 .Dq "published (proxy only)"
144 This type of entry is created automatically if
146 detects that a routing table entry for
149 .It Fl S Ar hostname ether_addr
154 entry for this host will be deleted first.
158 to be read and multiple entries to be set in the
162 in the file should be of the form
164 .Bd -ragged -offset indent -compact
165 .Ar hostname ether_addr
170 with argument meanings as given above.
171 Leading whitespace and empty lines are ignored.
174 character will mark the rest of the line as a comment.