I'd like to suggest an alternative reason for the presence of those records: The Perl script H2N will install them by default for every single host in the zone file, unless you use the -M option to suppress their creation.
Obviously this has nothing to do with the value, or lack thereof, of those records. But in answer to your original question, it may be that the only reason they exist in your environment is that your predecessor used H2N with minimal customization to generate the zone file. _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users