vendor_dns_action,action
NOERROR,success
NXDOMAIN,failure
SERVFAIL,failure
REFUSED,failure
NOTIMPL,failure
YXDOMAIN,failure 
YXRRSET,failure
NXRRSET,failure
NOTAUTH,failure    
NOTZONE,failure    
BADVERS,failure
BADSIG,failure   
BADKEY,failure    
BADTIME,failure