Unknown vulnerability in the ARP component for HP Tru64 UNIX 4.0f, 4.0g, and 5.0a allows remote attackers to "take over packets destined for another host" and cause a denial of service.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-1458
http://archives.neohapsis.com/archives/tru64/2002-q3/0017.html