DNS/実装/KnotDNS/2.0.1について、ここに記述してください。

And at last but not least, the improvements:

- We have decided to remove NS record from the Authority section for NOERROR responses. 

We used to put these records there because BIND and NSD did it.
  But these records are not required by any RFC and just increase the size of  the response.

----
tinydns(djbdns) でも考える。

{{{
tdlookup.c:static int want(const char *owner,const char type[2])
tdlookup.c:    if (want(control,DNS_T_NS)) {
tdlookup.c:      if (want(d1,DNS_T_A)) {
}}}
-- ToshinoriMaeno <<DateTime(2015-09-03T10:17:47+0900)>>