Cisco and ARP troubles

[Warren Togami]

Today I tried to replace my workplace's Cisco PIX firewall with a Linux
iptables box, but the network seemed to refuse to let go of the old MAC
attached to the IP address.  The campus network is entirely Cisco.  I
thought it was the MAC address, so I tried to manually set the MAC on the
Linux ethernet card to match the PIX interface.  It didn't work.

I'm perplexed.  I know very little about the Cisco specific stuff.  Anyone
have any clue what I'm doing wrong?

Warren Togami
warren at togami.com