disc — software discard network interface

       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).

       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.

Debian                                            May 25, 2002                                           DISC(4)

       disc — software discard network interface

inet(4), intro(4)

devicedisc