NAME

dlpi-mac - print the station address of a network interface

SYNOPSIS

dlpi-mac [ -p ppa ] [ -s sap ] [ -t seconds ] device

DESCRIPTION

dlpi-mac prints the station (MAC) address of the Ethernet interface whose DLPI device is device, such as /dev/aen0 or /dev/zen0, as six two-digit hexadecimal numbers joined by colons:

00:80:10:ff:ff:ff

Nothing else is printed on the standard output, so a script can use it as it is. It works the same way with every DLPI Ethernet driver and needs no driver-specific code. It may be run before or after the interface is set up: it sends no frame and leaves the device as it found it.

OPTIONS

-p ppa

the physical point of attachment to attach to, for a driver that needs one (DLPI Style 2); default 0.

-s sap

the service access point (Ethernet type) to bind while asking; default 0x88B5, a type no protocol uses.

-t seconds

how long to wait for each answer from the driver; default 5.

EXIT STATUS

0

the address was printed.

1

a usage error, or the device could not be opened (no such card in this machine).

2

the driver did not answer as DLPI requires, or not in time.

SEE ALSO

interfaces(4)