esi - get or set the end system identifier (ESI)
esi [-f] esi [itf]
esi is used to show or set the end system identifier (ESI, a unique
six-byte number corresponding to the MAC address of LAN technologies
like Ethernet) of an ATM interface. If the interface number itf is
omitted, interface 0 is used by default. The esi argument is a string
of twelve hex digits.
Only the ESI stored in the kernel is accessed; esi does not change the
ESI stored on the NIC. If a non-zero ESI is already set on an
interface, the -f option has to be used to overwrite it.
Note that ESI changes are not automatically propagated throughout the
system, e.g. to ilmid. esi should therefore be used early during system
-f force overwriting an existing ESI.
-V print version number of esi on standard output and exit.
Werner Almesberger, EPFL ICA <Werner.Almesberger@epfl.ch>