|| FreeBSD Kernel Interfaces Manual
netgraph IP input node type
ip_input node type takes all received packets and queues them into the IP in input processing subsystem.
ng_ip_input 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. Other control messages are silently discarded.
SHUTDOWN This node shuts down upon receipt of a
NGM_SHUTDOWN control message, or when all hooks have been disconnected.
ng_ip_input node type was implemented in
ng_ip_input node type should probably keep some sort of statistics.