MontyRee wrote: > > > Hello, all. > > > When I execute arp -a -n, there are lots of arp caches like below. > Surely, I set netmask and Broadcast without problem and routing table also > no problem. > > System is CentOS release 4.7 i386. > > I know how to delete the arp cache, > but I don't know why .. run tcpdump on the interface, to see what is happening on it. nate