ルートゾーンKSK/primingについて、ここに記述してください。

RRSIGなし? つまり、A レコードはroot zoneの管理下ではないということ。

$ dig +dnssec +norec k.root-servers.net @k.root-servers.net

; <<>> DiG 9.11.1 <<>> +dnssec +norec k.root-servers.net @k.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27748
;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
; COOKIE: 0c627f712b8fa54ebb204cbb5975296016cccdf4c8205e1f (good)
;; QUESTION SECTION:
;k.root-servers.net.            IN      A

;; ANSWER SECTION:
k.root-servers.net.     3600000 IN      A       193.0.14.129

;; Query time: 9 msec
;; SERVER: 193.0.14.129#53(193.0.14.129)
;; WHEN: Mon Jul 24 07:55:28 JST 2017
;; MSG SIZE  rcvd: 91

$ dig +dnssec m.root-servers.net @a.root-servers.net

; <<>> DiG 9.11.1 <<>> +dnssec m.root-servers.net @a.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63740
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 13, ADDITIONAL: 26
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;m.root-servers.net.            IN      A

;; ANSWER SECTION:
m.root-servers.net.     3600000 IN      A       202.12.27.33

;; AUTHORITY SECTION:
root-servers.net.       3600000 IN      NS      a.root-servers.net.
root-servers.net.       3600000 IN      NS      f.root-servers.net.
root-servers.net.       3600000 IN      NS      l.root-servers.net.
root-servers.net.       3600000 IN      NS      d.root-servers.net.
root-servers.net.       3600000 IN      NS      k.root-servers.net.
root-servers.net.       3600000 IN      NS      c.root-servers.net.
root-servers.net.       3600000 IN      NS      j.root-servers.net.
root-servers.net.       3600000 IN      NS      b.root-servers.net.
root-servers.net.       3600000 IN      NS      i.root-servers.net.
root-servers.net.       3600000 IN      NS      e.root-servers.net.
root-servers.net.       3600000 IN      NS      m.root-servers.net.
root-servers.net.       3600000 IN      NS      g.root-servers.net.
root-servers.net.       3600000 IN      NS      h.root-servers.net.

;; ADDITIONAL SECTION:
a.root-servers.net.     3600000 IN      A       198.41.0.4
a.root-servers.net.     3600000 IN      AAAA    2001:503:ba3e::2:30
f.root-servers.net.     3600000 IN      A       192.5.5.241
f.root-servers.net.     3600000 IN      AAAA    2001:500:2f::f
l.root-servers.net.     3600000 IN      A       199.7.83.42
l.root-servers.net.     3600000 IN      AAAA    2001:500:9f::42
d.root-servers.net.     3600000 IN      A       199.7.91.13
d.root-servers.net.     3600000 IN      AAAA    2001:500:2d::d
k.root-servers.net.     3600000 IN      A       193.0.14.129
k.root-servers.net.     3600000 IN      AAAA    2001:7fd::1
c.root-servers.net.     3600000 IN      A       192.33.4.12
c.root-servers.net.     3600000 IN      AAAA    2001:500:2::c
j.root-servers.net.     3600000 IN      A       192.58.128.30
j.root-servers.net.     3600000 IN      AAAA    2001:503:c27::2:30
b.root-servers.net.     3600000 IN      A       192.228.79.201
b.root-servers.net.     3600000 IN      AAAA    2001:500:200::b
i.root-servers.net.     3600000 IN      A       192.36.148.17
i.root-servers.net.     3600000 IN      AAAA    2001:7fe::53
e.root-servers.net.     3600000 IN      A       192.203.230.10
e.root-servers.net.     3600000 IN      AAAA    2001:500:a8::e
m.root-servers.net.     3600000 IN      AAAA    2001:dc3::35
g.root-servers.net.     3600000 IN      A       192.112.36.4
g.root-servers.net.     3600000 IN      AAAA    2001:500:12::d0d
h.root-servers.net.     3600000 IN      A       198.97.190.53
h.root-servers.net.     3600000 IN      AAAA    2001:500:1::53

;; Query time: 62 msec
;; SERVER: 198.41.0.4#53(198.41.0.4)
;; WHEN: Mon Jul 24 07:48:01 JST 2017
;; MSG SIZE  rcvd: 825

1. NS

$ dig +dnssec +norec -t ns . @c.root-servers.net

; <<>> DiG 9.11.1 <<>> +dnssec +norec -t ns . @c.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31424
;; flags: qr aa; QUERY: 1, ANSWER: 14, AUTHORITY: 0, ADDITIONAL: 27

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

;; ANSWER SECTION:
.                       518400  IN      NS      c.root-servers.net.
.                       518400  IN      NS      l.root-servers.net.
.                       518400  IN      NS      b.root-servers.net.
.                       518400  IN      NS      h.root-servers.net.
.                       518400  IN      NS      i.root-servers.net.
.                       518400  IN      NS      j.root-servers.net.
.                       518400  IN      NS      k.root-servers.net.
.                       518400  IN      NS      m.root-servers.net.
.                       518400  IN      NS      f.root-servers.net.
.                       518400  IN      NS      g.root-servers.net.
.                       518400  IN      NS      d.root-servers.net.
.                       518400  IN      NS      a.root-servers.net.
.                       518400  IN      NS      e.root-servers.net.
.                       518400  IN      RRSIG   NS 8 0 518400 20170805170000 20170723160000 15768 . VCbNOaTpB6vKmw3R9IdTGcYpscjgbwQanmL5yS+vvQrSnhlOL9RZOHve 2+QjWdO3Eq9lEreTzW9B+j67yKwy0bfy7Tx1N01LlnRSxjyoVlBetLvu bweVomqzM59/2XxTJxYlpcb1obwuJW0cG2YwOEGdzxa90XBFKsLLu9C3 3cxkJrtg725ah0OZre91hno71BFSVo7CaIW7yJifofmnmej+msS7MERy 2pbRCKZ9D7+mxC6uHDMs3YxqBr82zg/knX8AIZsWljFxL9/3V6jauKyM LPdedLMqlMue+woVasAVev42dDikm2JMope2lL1ixXUrJI0JbuSp8U6I FoWGDw==

;; ADDITIONAL SECTION:
a.root-servers.net.     3600000 IN      A       198.41.0.4
b.root-servers.net.     3600000 IN      A       192.228.79.201
c.root-servers.net.     3600000 IN      A       192.33.4.12
d.root-servers.net.     3600000 IN      A       199.7.91.13
e.root-servers.net.     3600000 IN      A       192.203.230.10
f.root-servers.net.     3600000 IN      A       192.5.5.241
g.root-servers.net.     3600000 IN      A       192.112.36.4
h.root-servers.net.     3600000 IN      A       198.97.190.53
i.root-servers.net.     3600000 IN      A       192.36.148.17
j.root-servers.net.     3600000 IN      A       192.58.128.30
k.root-servers.net.     3600000 IN      A       193.0.14.129
l.root-servers.net.     3600000 IN      A       199.7.83.42
m.root-servers.net.     3600000 IN      A       202.12.27.33
a.root-servers.net.     3600000 IN      AAAA    2001:503:ba3e::2:30
b.root-servers.net.     3600000 IN      AAAA    2001:500:200::b
c.root-servers.net.     3600000 IN      AAAA    2001:500:2::c
d.root-servers.net.     3600000 IN      AAAA    2001:500:2d::d
e.root-servers.net.     3600000 IN      AAAA    2001:500:a8::e
f.root-servers.net.     3600000 IN      AAAA    2001:500:2f::f
g.root-servers.net.     3600000 IN      AAAA    2001:500:12::d0d
h.root-servers.net.     3600000 IN      AAAA    2001:500:1::53
i.root-servers.net.     3600000 IN      AAAA    2001:7fe::53
j.root-servers.net.     3600000 IN      AAAA    2001:503:c27::2:30
k.root-servers.net.     3600000 IN      AAAA    2001:7fd::1
l.root-servers.net.     3600000 IN      AAAA    2001:500:9f::42
m.root-servers.net.     3600000 IN      AAAA    2001:dc3::35

;; Query time: 127 msec
;; SERVER: 192.33.4.12#53(192.33.4.12)
;; WHEN: Mon Jul 24 07:53:55 JST 2017
;; MSG SIZE  rcvd: 1097