clear ARP Cache on Linux Firwall

From: Miles Freedman (
Date: 02/05/04

Date: 5 Feb 2004 07:36:23 -0800

I'm running a Linux 8.0 box with IP chains as my firewall. I was
wondering if there was a command I can run to clear the ARP cache
without having to reboot the box. I'm replaceing a main gateway this
box points to and I want to force it to recognize the new MAC address.