I am having an issue similar to Cisco ASA logs "regular translation creation failed for icmp …" for DNS traffic, yet it works however in my situation the source is a MacBook Pro (10.7) not running BIND.
Every few minutes my ASA logs the following message yet DNS resolution is working fine:
%ASA-3-305006: regular translation creation failed for icmp src inside:172.16.0.180 dst outside:184.108.40.206 (type 3, code 3)
Is there anything to be concerned about this message? Is there a way to prevent this message without disabling event 305006 entirely?