== DNS/glue/unbound 1.9.1 ==

<<TableOfContents()>>

Unboundがsibling domain glue返答を受け入れていないことまでは分かる。-- ToshinoriMaeno <<DateTime(2019-04-01T22:22:05+0900)>>
  $ unbound-control get_option harden-referral-path  (yes)

同様のテストをbindでもやってみよう。[[../bind-9.14.0]]

net nsを問合せて、unboundがどこまで調べているかも、見ておこう。-- ToshinoriMaeno <<DateTime(2019-04-01T22:38:57+0900)>>

[[/net]]

== flush_zone ==
{{{
$ unbound-control flush_zone net
$ unbound-control flush_zone com

}}}

== com NS ==
{{{
$ dig -t ns com

; <<>> DiG 9.14.0 <<>> -t ns com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59721
;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
;; QUESTION SECTION:
;com.				IN	NS

;; ANSWER SECTION:
com.			172800	IN	NS	k.gtld-servers.net.
com.			172800	IN	NS	d.gtld-servers.net.
com.			172800	IN	NS	l.gtld-servers.net.
com.			172800	IN	NS	h.gtld-servers.net.
com.			172800	IN	NS	e.gtld-servers.net.
com.			172800	IN	NS	f.gtld-servers.net.
com.			172800	IN	NS	g.gtld-servers.net.
com.			172800	IN	NS	a.gtld-servers.net.
com.			172800	IN	NS	i.gtld-servers.net.
com.			172800	IN	NS	m.gtld-servers.net.
com.			172800	IN	NS	b.gtld-servers.net.
com.			172800	IN	NS	j.gtld-servers.net.
com.			172800	IN	NS	c.gtld-servers.net.

;; Query time: 64 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: 月  4月 01 22:16:49 JST 2019
;; MSG SIZE  rcvd: 256
}}}


== +norec ==
なにがキャッシュにあるかを調べる。

{{{
$ dig +norec -t ns net
...
}}}

{{{
$ dig +norec -t ns nstld.com

; <<>> DiG 9.14.0 <<>> +norec -t ns nstld.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21002
;; flags: qr ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
;; QUESTION SECTION:
;nstld.com.			IN	NS

;; ANSWER SECTION:
nstld.com.		86285	IN	NS	av4.nstld.com.
nstld.com.		86285	IN	NS	av2.nstld.com.
nstld.com.		86285	IN	NS	av3.nstld.com.
nstld.com.		86285	IN	NS	av1.nstld.com.

;; Query time: 0 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: 月  4月 01 22:18:44 JST 2019
;; MSG SIZE  rcvd: 110


}}}