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Date: Fri, 25 Jun 2004 09:01:40 -0500
From: Peter Pauly <ppauly@gmail.com>
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Subject: ARP / Cisco Router Wierdness
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This morning while attempting to replace a server with a new machine
(same IP address, the old machine was unplugged), The Cisco 2600
router's arp table continued to point to the old DNS server's MAC
address.

Even after rebooting the new server (Freebsd 5.2.1), the MAC address
remained unchanged in the router. The router continued to point to the
old machine's MAC address.

I updated the entry manually in the router and all was well. But I am
concerned that Freebsd is not announcing it's MAC address when the
machine or interface comes up. Any ideas?