Hi friends, I have been trying this out for some time but have'nt been able to understand somehow. I followed the following steps 1) ping an ip (this populates arp cache indirectly) 2) keep on checking the /proc/net/arp for entry to age out. I have observed that the entry stays in the arp cache for around 6-7 mins. I have not tampered with any of the /proc settings for neighbor. What I thought was that the entry should get stale after gc_stale_time (i.e 60 secs), but this is not happening. I am running redhat 2.4.20. Could someone please give some hints as whether my tests are unproper or some means by which I can make the entry in arp cache go stale after gc_stale_time interval. Thanks, Partha x3025 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html