The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: isc-dhcp41-server
CVE-2010-3611 ISC DHCP server 4.0 before 4.0.2, 4.1 before 4.1.2, and 4.2 before 4.2.0-P1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a DHCPv6 packet containing a Relay-Forward message without an address in the Relay-Forward link-address field.
Solution: Update your system with the appropriate patches or software upgrades.