-/* Extract the AUTHORITY information from the answer. If the
-answer isn't authoritive (AA not set), we do not extract anything.
+/* Extract the AUTHORITY information from the answer. If the answer isn't
+authoritative (AA not set), we do not extract anything.
+
+The AUTHORITY section contains NS records if the name in question was found,
+it contains a SOA record otherwise. (This is just from experience and some
+tests, is there some spec?)