DNS/設定/おかしな設定/siblings/unbound-1.7.0.logについて、ここに記述してください。

%dig -t a a.ns.net.qmail.jp @127.0.0.2                                   ~

; <<>> DiG 9.11.2 <<>> -t a a.ns.net.qmail.jp @127.0.0.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43384
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;a.ns.net.qmail.jp.             IN      A

;; ANSWER SECTION:
a.ns.net.qmail.jp.      300     IN      A       14.192.44.5

;; AUTHORITY SECTION:
net.qmail.jp.           300     IN      NS      a.ns.com.qmail.jp.

;; Query time: 12 msec
;; SERVER: 127.0.0.2#53(127.0.0.2)
;; WHEN: Mon Mar 26 09:00:09 JST 2018
;; MSG SIZE  rcvd: 85

[1522022409] unbound[11559:0] info: resolving a.ns.net.qmail.jp. A IN

[1522022409] unbound[11559:0] info: resolving g.dns.jp. AAAA IN

[1522022409] unbound[11559:0] info: resolving nsg.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <jp.> 202.12.30.131#53
[1522022409] unbound[11559:0] info: query response was REFERRAL
[1522022409] unbound[11559:0] info: resolving a.ns.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: response for g.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <dns.jp.> 203.119.1.4#53
[1522022409] unbound[11559:0] info: query response was ANSWER
[1522022409] unbound[11559:0] info: error sending query to auth server 2001:240::54 port 53
[1522022409] unbound[11559:0] info: error sending query to auth server 2001:200:c000::99 port 53
[1522022409] unbound[11559:0] info: response for nsg.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <dns.jp.> 202.12.30.134#53
[1522022409] unbound[11559:0] info: query response was ANSWER
[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was REFERRAL

[1522022409] unbound[11559:0] info: resolving a.ns.com.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: resolving a.ns.net.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: resolving a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: response for a.ns.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER

[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was NXDOMAIN ANSWER        ?????

[1522022409] unbound[11559:0] info: response for a.ns.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was ANSWER
[1522022409] unbound[11559:0] info: response for a.ns.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER

[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was NXDOMAIN ANSWER      ????

[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was NXDOMAIN ANSWER       ????
[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was ANSWER
[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. A IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was ANSWER

[1522022409] unbound[11559:0] info: response for a.ns.net.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <net.qmail.jp.> 14.192.44.29#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER
[1522022409] unbound[11559:0] info: response for a.ns.com.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <com.qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was ANSWER
[1522022409] unbound[11559:0] info: response for a.ns.com.qmail.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <com.qmail.jp.> 14.192.44.5#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER

[1522022409] unbound[11559:0] info: response for nsg.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <dns.jp.> 210.138.175.245#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER
[1522022409] unbound[11559:0] info: response for g.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <dns.jp.> 203.119.40.4#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER
[1522022409] unbound[11559:0] info: response for g.dns.jp. AAAA IN
[1522022409] unbound[11559:0] info: reply from <dns.jp.> 203.119.40.4#53
[1522022409] unbound[11559:0] info: query response was nodata ANSWER