2 .\" Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in the
11 .\" documentation and/or other materials provided with the distribution.
12 .\" 3. All advertising materials mentioning features or use of this software
13 .\" must display the following acknowledgement:
14 .\" This product includes software developed by Bill Paul.
15 .\" 4. Neither the name of the author nor the names of any co-contributors
16 .\" may be used to endorse or promote products derived from this software
17 .\" without specific prior written permission.
19 .\" THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
20 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 .\" $FreeBSD: src/share/man/man5/ethers.5,v 1.8.2.4 2002/02/01 15:51:18 ru Exp $
32 .\" $DragonFly: src/share/man/man5/ethers.5,v 1.3 2006/04/17 18:01:37 swildner Exp $
39 .Nd ethernet address database
43 database contains information regarding known 48-bit ethernet addresses
44 of hosts on an Internetwork.
45 The data is stored in a file called
47 in the following format:
48 .Bd -unfilled -offset indent
49 .Pa ethernet-address fully-qualified-host-name
52 Items are separated by any number of blanks and/or
54 A ``#'' at the start of a line indicates the
55 beginning of a comment that extends to the end of the line.
57 the start of a line will cause the
59 library functions to use data stored in the
64 maps in addition to the data in the
68 An ethernet address is expressed in
70 form as "x:x:x:x:x:x" where
72 is a hexadecimal value between 0x00 and 0xFF.
74 should be in network order.
75 Hostnames specified in the
77 database should correspond to entries in the
83 function in the standard C library can be used to break individual
86 database into their individual components: a binary Ethernet address
89 structure, and a hostname stored as a character string.
91 .Bl -tag -width /etc/services -compact
104 format is based on the format used in SunOS 4.1.x.