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28 .\" @(#)arp.8 8.1 (Berkeley) 6/6/93
36 .Nd address resolution display and control
54 .Fl s Ar hostname ether_addr
58 .Fl S Ar hostname ether_addr
66 utility displays and modifies the Internet-to-Ethernet address translation
67 tables used by the address resolution protocol
69 With no flags, the program displays the current
73 The host may be specified by name or by number,
74 using Internet dot notation.
77 .Bl -tag -width indent
79 The program displays or deletes all of the current
83 A super-user may delete an entry for the host called
90 keyword is specified, only the
94 for this host will be deleted.
98 flag may be combined with the
100 flag to delete all entries.
101 .It Fl i Ar interface
102 Limit the operation scope to the
106 Applicable only to the following operations:
107 display one, display all, delete all.
109 Show network addresses as numbers (normally
111 attempts to display addresses symbolically).
112 .It Fl s Ar hostname ether_addr
115 entry for the host called
117 with the Ethernet address
119 The Ethernet address is given as six hex bytes separated by colons.
120 The entry will be permanent unless the word
122 is given in the command.
125 is given, the entry will be
127 i.e., this system will
131 responding to requests for
133 even though the host address is not its own.
138 in which case the interfaces on this host will be examined,
139 and if one of them is found to occupy the same subnet, its
140 Ethernet address will be used.
143 keyword is also specified, this will create a
144 .Dq "published (proxy only)"
146 This type of entry is created automatically if
148 detects that a routing table entry for
151 .It Fl S Ar hostname ether_addr
156 entry for this host will be deleted first.
160 to be read and multiple entries to be set in the
164 in the file should be of the form
166 .Bd -ragged -offset indent -compact
167 .Ar hostname ether_addr
172 with argument meanings as given above.
173 Leading whitespace and empty lines are ignored.
176 character will mark the rest of the line as a comment.