Linksys BEFVP41 VPN Router 2.0 with firmware 1.01.04 allows remote attackers on the local network, to cause a denial of service via IP packets with a null IP option length.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24125
http://www.vupen.com/english/advisories/2006/0238
http://www.securityfocus.com/bid/16307
http://www.securityfocus.com/archive/1/422266/100/0/threaded
http://www.securityfocus.com/archive/1/422064/100/0/threaded
http://www.securityfocus.com/archive/1/421929/100/0/threaded