I have 2 identical printers with the same IP on my network. One is only used as a backup for the primary printer and both are never on line at the same time. The goal was to always keep only 1 on and have an use the other printer as an immediate backup if necessary. But when I switch the cable I can't ping the printer until I reboot. I am assuming UNIX is saving the MAC addresses and it no long matches. How do I refresh the UNIX IP Address table without rebooting?

Thanks in advance!!