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ethers(5) [redhat man page]

ETHERS(5)							   File formats 							 ETHERS(5)

ethers - Ethernet address to IP number database DESCRIPTION
/etc/ethers contains 48 bit Ethernet addresses and their corresponding IP numbers, one line for each IP number: Ethernet-address IP-number The two items are separated by any number of SPACE and/or TAB char acters. A # at the beginning of a line starts a comment which extends to the end of the line. The Ethernet-address is written as x:x:x:x:x:x, where x is a hexadecimal number between 0 and ff which represents one byte of the address, which is in network byte order (big-endian). The IP-number may be a hostname which can be resolved by DNS or a dot separated number. EXAMPLES
08:00:20:00:61:CA pal FILES
/etc/ethers SEE ALSO
rarp(8) April 26th, 1996 ETHERS(5)

Check Out this Related Man Page

ETHERS(5)						      BSD File Formats Manual							 ETHERS(5)

ethers -- Ethernet host name data base DESCRIPTION
The ethers file maps Ethernet MAC addresses to host names. Lines consist of an address and a host name, separated by any number of blanks and/or tab characters. A '#' character indicates the beginning of a comment; characters up to the end of the line are not interpreted by routines which search the file. Each line in ethers has the format: ethernet-MAC-address hostname-or-IP Ethernet MAC addresses are expressed as six hexadecimal numbers separated by colons, e.g. "08:00:20:00:5a:bc". The functions described in ethers(3) and ether_aton(3) can read and produce this format. The traditional use of ethers involved using hostnames for the second argument. This may not be suitable for machines that don't have a com- mon MAC address for all interfaces (i.e., just about every non Sun machine). There should be no problem in using an IP address as the second field if you wish to differentiate between different interfaces on a system. FILES
/etc/ethers The ethers file resides in /etc. SEE ALSO
ethers(3) HISTORY
The ethers file format was adopted from SunOS and appeared in NetBSD 1.0. BUGS
A name server should be used instead of a static file. BSD
November 7, 2000 BSD
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