ng_hub — packet distribution netgraph node type

       Ruslan Ermilov <ru@FreeBSD.org>

Debian                                             May 5, 2010                                         NG_HUB(4)

       This node type supports the generic control messages, plus the following:

       NGM_HUB_SET_PERSISTENT (setpersistent)
            This command sets the persistent flag on the node, and takes no arguments.

       The  hub  node  type  provides  a  simple mechanism for distributing packets over several links.  Packets
       received on any of the hooks are forwarded out the other hooks.  Packets are not altered in any way.

       The ng_hub node type appeared in FreeBSD 5.3.

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

       ng_hub — packet distribution netgraph node type

netgraph(4), ng_bridge(4), ng_ether(4), ng_one2many(4), ngctl(8), nghook(8)

       This node shuts down upon receipt of a  NGM_SHUTDOWN  control  message,  or  when  all  hooks  have  been
       disconnected.   Setting  the  persistent  flag  via  a  NGM_HUB_SET_PERSISTENT  control  message disables
       automatic node shutdown when the last hook gets disconnected.

#include<netgraph/ng_hub.h>