The remote host is missing an update to dhcp announced via advisory MDVSA-2009:154.

To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. https://secure1.securityspace.com/smysecure/catid.html?in=MDVSA-2009:154 http://xforce.iss.net/xforce/xfdb/51717

A vulnerability has been found and corrected in ISC DHCP: ISC DHCP Server is vulnerable to a denial of service, caused by the improper handling of DHCP requests. If the host definitions are mixed using dhcp-client-identifier and hardware ethernet, a remote attacker could send specially-crafted DHCP requests to cause the server to stop responding (CVE-2009-1892). This update provides fixes for this vulnerability. Affected: 2008.1, 2009.0, 2009.1, Corporate 3.0, Corporate 4.0, Multi Network Firewall 2.0