This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to an segmentation fault in lightweight resolver when the vulnerable application handles an overlong query name. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.
ISC BIND 9.0.x -> 9.9.9-P1
ISC BIND 9.10.0->9.10.4-P1
ISC BIND 9.11.0a3->9.11.0b1
Denial of Service: Remote attackers can crash vulnerable systems or services
Apply the most recent upgrade or patch from the vendor.