Robert Edmonds wrote:
I can certainly see how apex NS records in the
authority section is not
particularly useful for root or TLD servers, but it's occasionally
useful for "leaf" zones to speed up the propagation of updated NS
records, due to the trust ranking rules in RFC 2181 §5.4.1.
I haven't thought about this. This might be indeed useful. On the other
hand, why NS and not any other RR type? I think this is really single
purposed and I'm not convinced (at the moment) that this is worthy of
adding an option.