Integer signedness error in D-Link AirPlus DI-614+ running firmware 2.30 and earlier allows remote attackers to cause a denial of service (IP lease depletion) via a DHCP request with the LEASETIME option set to -1, which makes the DHCP lease valid for thirteen or more years.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16531
http://www.securityfocus.com/bid/10621
http://www.securityfocus.com/archive/1/367485