ng_echo — netgraph echo node type

       Julian Elischer <julian@FreeBSD.org>

Debian                                          January 19, 1999                                      NG_ECHO(4)

       This node type supports only the generic control messages.  Any other control messages are reflected back
       to the sender.

       The echo node type reflects all data and control messages back to the sender.  This node type is used for
       testing and debugging.

       The ng_echo node type was implemented in FreeBSD 4.0.

       A echo node accepts any request to connect, regardless of the hook name, as long as the name is unique.

       ng_echo — netgraph echo node type

netgraph(4), ng_hole(4), ngctl(8)

       This  node  shuts  down  upon  receipt  of  a  NGM_SHUTDOWN  control message, or when all hooks have been
       disconnected.

#include<netgraph/ng_echo.h>