Is the timeout on the arp cache restarted on each communication with the
device? Or is the cache refreshed every timeout interval whether there has
been activity at all?
Also: I'm using the sysctl method that arp.c uses to check the cache, but
I don't like allocating a big buffer and running through all the entries
to find the one I'm looking for. It appears that SIOCGARP is not
supported. I would use the routing socket approach (I'm assuming it works
the way Stevens describes in UNP ch. 17), but that requires root privs. Am
I stuck with sysctl if I want to check the cache as a user?
--
Scott Johnson
System/Network Administrator
Airlink Systems
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