On systems without the BSD routing socket, GateD listens to ICMP messages received by the system. Currently, GateD only does processing on ICMP redirect packets. But more functionality, however, may be added in the future, such as support for the router discovery messages. Processing of ICMP redirect messages is handled by the redirectstatement.
Currently, the only reason to specify the icmp statement is to be able to trace the ICMP messages that GateD receives.
icmp { traceoptions trace_options ; }
Packet tracing options (which may be modified with detail and recv):
Last updated April 27, 1997
gated@gated.merit.edu