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$FreeBSD$
.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
a /etc/eui64 in the following format: d -ragged -offset indent .Em EUI-64 host-name .Ed
p Items are separated by any number of blanks and/or tab characters. A .Ql # 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 .Ql + at the start of a line will cause the .Xr eui64 3 library functions to use data stored in the NIS
a eui64.byname and
a eui64.byid maps in addition to the data in the
p An EUI-64 is expressed in .Tn ASCII form as .Qq 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
a /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
l -tag -width ".Pa /etc/eui64" -compact t Pa /etc/eui64 The
.Nm
file resides in
a /etc . .El .Sh SEE ALSO .Xr eui64 3 , .Xr yp 8 .Sh HISTORY The .Nm format is based on the .Xr ethers 5 format.