This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to a fault in the DNS protocol when handling a crafted packet. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.
ISC BIND 9.10.5-S1
ISC BIND 9.9.10-S1
ISC BIND 9.11.0 to 9.11.1
ISC BIND 9.10.5
ISC BIND 9.9.10
Denial of Service: Remote attackers can crash vulnerable systems or services.
Apply the most recent upgrade or patch from the vendor.