I notice that while receiving continuous pings that ARP messages are
broadcast about every 30 to get the MAC address for machine with the
IP address II am receiving the pings from. I would like to suppress
these ARP messages. I see in the ARP manpage:
base_reachable_time
Once a neighbour has been found, the entry is considered to be
valid for at least a random value between base_reachable_time/2 and
3*base_reachable_time/2. An entry's validity will be extended if it
receives positive feedback from higher level protocols. Defaults to 30
seconds.
Is base_reachable_time the value that determines how often the ARP
messages are sent? If so, changing it in the proc file system does
not seem to affect the behavior. Do I have to change my kernel to
change the default value of 30?
Also, what does this mean by "positive feedback from higher level
protocols?" Isn't getting pings "positive feedback?"
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