thus nate spake: > 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 Proxy ARP enabled? Timo