This indicates an attack attempt to exploit a denial-of-service vulnerability in Sun Solaris.
The vulnerability is caused by an error when the DHCP server daemon handles malicious DHCP requests. It allows a remote attacker to crash the application via sending a crafted DHCP request packet.
Sun Solaris 8
Sun Solaris 9
Sun Solaris 10
Sun OpenSolaris builds snv_01 through snv_102
Denial of Service: Remote attackers can crash vulnerable systems.
Refer to the vendor's web site for the suggested workaround: