xref: /freebsd/share/man/man5/eui64.5 (revision 7387768ef4f8dbdd1cdbb1ff61e1d27c532d33b2)

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.Dd May 11, 2004
.Dt EUI64 5
.Os
.Sh NAME
.Nm eui64
.Nd IEEE EUI-64 address database
.Sh DESCRIPTION
The
.Nm
database contains information regarding known IEEE EUI-64s of hosts.
The data is stored in a file called
.Pa /etc/eui64
in the following format:
.Bd -unfilled -offset indent
.Pa EUI-64 host-name
.Ed
.Pp
Items are separated by any number of blanks and/or
tab characters.
A
.Dq #
at the start of a line indicates the
beginning of a comment that extends to the end of the line.
Valid lines may also contain comments.
A
.Dq +
at the start of a line will cause the
.Xr eui64 3
library functions to use data stored in the
.Xr NIS 4
.Pa eui64.byname
and
.Pa eui64.byid
maps in addition to the data in the
.Pa /etc/eui64
file.
.Pp
An EUI-64 is expressed in
.Tn ASCII
form as "x-x-x-x-x-x-x-x" where
.Ar x
is a hexadecimal value between 0x00 and 0xFF.
The address values
should be in network order.
Hostnames specified in the
.Pa /etc/eui64
database should correspond to entries in the
.Xr hosts 5
file.
./" .Pp
./" The
./" .Fn eui64_line
./" function in the standard C library can be used to break individual
./" lines in the
./" .Pa /etc/eui64
./" database into their individual components: a binary EUI-64 is
./" stored as an
./" .Pa eui64_addr
./" structure, and a hostname stored as a character string.
.Sh FILES
.Bl -tag -width /etc/eui64 -compact
.It Pa /etc/eui64
The
.Nm
file resides in
.Pa /etc .
.El
.Sh SEE ALSO
.Xr eui64 3 ,
.Xr yp 8
.Sh HISTORY
The
.Nm
format is based on the
.Xr ethers 5
format.