Unspecified vulnerability in Cisco IOS 12.2 and 12.4, when the L2TP mgmt daemon process is enabled, allows remote attackers to cause a denial of service (device reload) via a crafted L2TP packet.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5362
http://www.vupen.com/english/advisories/2008/2670
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a0157a.shtml