NAME

     ng_ether_echo — netgraph ether_echo node type

SYNOPSIS

     #include <netgraph/ng_ether_echo.h>

DESCRIPTION

     The ether_echo node type reflects all data and control messages back to the sender.  It
     assumes (and does not check) that the packet is an ethernet frame, and swaps the source and
     destination addresses before echoing it.  This node type is used for testing and debugging.

HOOKS

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

CONTROL MESSAGES

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

SHUTDOWN

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

SEE ALSO

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

HISTORY

     The ng_ether_echo node type was implemented in FreeBSD 8.0.

AUTHORS

     Julian Elischer <julian@FreeBSD.org>