DISC(4) |
FreeBSD Kernel Interfaces Manual |
DISC(4) |
NAME
disc —
software discard network interface
SYNOPSIS
device disc
DESCRIPTION
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).
HISTORY
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.