NG_GIF_DEMUX(4) BSD Kernel Interfaces Manual NG_GIF_DEMUX(4)NAME
ng_gif_demux -- demultiplexer for packets from ng_gif(4) nodes
SYNOPSIS
#include <netgraph/ng_gif_demux.h>
DESCRIPTION
The ng_gif_demux netgraph node type demultiplexes the output from ng_gif(4) nodes in the netgraph(4) networking subsystem.
The gif hook is meant to be connected to the lower or orphans hook of an ng_gif(4) node. The inet, inet6, atalk, ipx, atm, natm, and ns
hooks output frames of the given type when they are received on the gif hook. When a frame is received on one of these hooks, it is encapsu-
lated and sent out the gif hook.
HOOKS
This node type supports the following hooks:
gif Connection to the lower or orphans hook of an ng_gif(4) node.
inet Hook for input and output of IP frames.
inet6 Hook for input and output of IPv6 frames.
atalk Hook for input and output of AppleTalk frames.
ipx Hook for input and output of IPX frames.
atm Hook for input and output of ATM frames.
natm Hook for input and output of NATM frames.
ns Hook for input and output of NS frames.
CONTROL MESSAGES
This node type supports only the generic control messages.
SEE ALSO gif(4), netgraph(4), netintro(4), ng_gif(4), ifconfig(8), ngctl(8), nghook(8)AUTHORS
Brooks Davis <brooks@FreeBSD.org>
BSD September 18, 2001 BSD
Check Out this Related Man Page
NG_GIF(4) BSD Kernel Interfaces Manual NG_GIF(4)NAME
ng_gif -- generic tunnel interface netgraph node type
SYNOPSIS
#include <netgraph/ng_gif.h>
DESCRIPTION
The ng_gif netgraph node type allows gif(4) interfaces to interact with the netgraph(4) networking subsystem. Once the ng_gif module is
loaded in the kernel, a node is automatically created for each gif(4) interface in the system. Each node will attempt to name itself with
the same name as the associated interface. All ng_gif nodes are persistent for as long as the interface itself exists.
Two hooks are supported: lower and orphans. The hook name divert may be used as an alias for lower, and is provided for compatibility with
ng_ether(4). In reality the two names represent the same hook.
The lower hook is a connection to the raw gif(4) device. When connected, all incoming packets are diverted out this hook. Writing to this
hook results in a raw encapsulated packet being transmitted by the device. Normal outgoing packets are not affected by lower being con-
nected.
The orphans hook is equivalent to lower, except that only unrecognized packets (that would otherwise be discarded) are written to the hook,
and normal incoming traffic is unaffected. At most one of orphans and lower may be connected at any time.
In all cases, frames are raw packets with the address family of the packet attached to the front.
When no hooks are connected, packets flow normally upwards and downwards.
HOOKS
This node type supports the following hooks:
lower Connection to the lower device link layer.
orphans Like lower, but only receives unrecognized packets.
CONTROL MESSAGES
This node type supports only the generic control messages.
EXAMPLES
This command dumps all unrecognized packets received by the gif0 interface to standard output decoded in hex and ASCII:
nghook -a gif0: orphans
SEE ALSO gif(4), netgraph(4), netintro(4), ifconfig(8), ngctl(8), nghook(8)AUTHORS
Brooks Davis <brooks@FreeBSD.org>
BSD September 18, 2001 BSD
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