disc —
software
discard network interface
device disc
The
disc interface is a software discard mechanism
which may be used for performance analysis and/or software testing. As with
other network interfaces, the discard interface must have network addresses
assigned for each address family with which it is to be used. These addresses
may be set or changed with the
SIOCSIFADDR
ioctl(2).
Each
disc interface is created at runtime using
interface cloning. This is most easily done with the
ifconfig(8) create
command or using the
cloned_interfaces
variable in
rc.conf(5).
inet(4),
intro(4)
The
disc device appears to have been derived from
the
lo(4) device around the time of
4.4BSD. This manpage was adapted from
lo(4) and first appeared in
FreeBSD 5.0.