http://www.cert.org/advisories/CA-2003-15.html
CERT® Advisory CA-2003-15 Cisco IOS Interface Blocked by IPv4 Packet Original release date: July 16, 2003 Last revised: -- Source: CERT/CC
A complete revision history can be found at the end of this file.
Systems Affected
* All Cisco devices running Cisco IOS software and configured to process Internet Protocol version 4 (IPv4) packets