Re: Cache DNS

["Jean-Yves F. Barbier" <12ukwn@gmail.com>]

On Sat, 12 Feb 2011 13:41:03 +0100, Pascal Hambourg
<pascal.mail@plouf.fr.eu.org> wrote:



...
> M'étonnerait, les serveurs racines ne contiennent pas ces informations.


~$ dig luxpopuli.fr

; <<>> DiG 9.7.2-P3 <<>> luxpopuli.fr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23962
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;luxpopuli.fr.			IN	A

;; ANSWER SECTION:
luxpopuli.fr.		11313	IN	A	109.234.160.22

;; AUTHORITY SECTION:
luxpopuli.fr.		169713	IN	NS
ns1.o2switch.net. luxpopuli.fr.		169713	IN
NS	ns2.o2switch.net.

;; ADDITIONAL SECTION:
ns1.o2switch.net.	11352	IN	A	109.234.160.5

;; Query time: 2 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Feb 12 13:48:36 2011
;; MSG SIZE  rcvd: 110

~$ dig +trace luxpopuli.fr

; <<>> DiG 9.7.2-P3 <<>> +trace luxpopuli.fr
;; global options: +cmd
.			418808	IN	NS	a.root-servers.net.
.			418808	IN	NS	i.root-servers.net.
.			418808	IN	NS	m.root-servers.net.
.			418808	IN	NS	d.root-servers.net.
.			418808	IN	NS	b.root-servers.net.
.			418808	IN	NS	h.root-servers.net.
.			418808	IN	NS	j.root-servers.net.
.			418808	IN	NS	l.root-servers.net.
.			418808	IN	NS	c.root-servers.net.
.			418808	IN	NS	e.root-servers.net.
.			418808	IN	NS	k.root-servers.net.
.			418808	IN	NS	g.root-servers.net.
.			418808	IN	NS	f.root-servers.net.
;; Received 272 bytes from 127.0.0.1#53(127.0.0.1) in 1 ms

fr.			172800	IN	NS	a.nic.fr.
fr.			172800	IN	NS	d.ext.nic.fr.
fr.			172800	IN	NS	d.nic.fr.
fr.			172800	IN	NS	g.ext.nic.fr.
fr.			172800	IN	NS	e.ext.nic.fr.
fr.			172800	IN	NS	f.ext.nic.fr.
fr.			172800	IN	NS	c.nic.fr.
;; Received 458 bytes from 192.36.148.17#53(i.root-servers.net) in 343 ms

luxpopuli.fr.		172800	IN	NS
ns1.o2switch.net. luxpopuli.fr.		172800	IN
NS	ns2.o2switch.net. ;; Received 78 bytes from
192.134.0.129#53(c.nic.fr) in 51 ms

luxpopuli.fr.		14400	IN	A	109.234.160.22
luxpopuli.fr.		86400	IN	NS	ns2.o2switch.net.
luxpopuli.fr.		86400	IN	NS	ns1.o2switch.net.
;; Received 126 bytes from 109.234.160.5#53(ns1.o2switch.net) in 68 ms

On dirait que si.

-- 
As he had feared, his orders had been forgotten and everyone had brought
the potato salad.