DNS/KnotResolver/brau.internat.jp/別返答について、ここに記述してください。

1. NXDOMAIN

$dig -t ns brau.jp @127.0.0.1

; <<>> DiG 9.16.1-Ubuntu <<>> -t ns brau.jp @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 17030
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;brau.jp.                       IN      NS

;; Query time: 16 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: 土  8月 29 10:13:52 JST 2020
;; MSG SIZE  rcvd: 36

乗取先にNSを問い合わせるとこの返事が返るのだが、 Knot Resolverの返事には現れない。

$ dig -t ns brau.jp @150.42.6.9

; <<>> DiG 9.16.1-Ubuntu <<>> -t ns brau.jp @150.42.6.9
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59082
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;brau.jp.                       IN      NS

;; ANSWER SECTION:
brau.jp.                60      IN      NS      ns.brau.internat.jp.

;; ADDITIONAL SECTION:
ns.brau.internat.jp.    60      IN      A       150.42.6.9

;; Query time: 15 msec
;; SERVER: 150.42.6.9#53(150.42.6.9)
;; WHEN: 土  8月 29 10:08:15 JST 2020
;; MSG SIZE  rcvd: 72