[GW-C]Odd DNS issue just now

D. Hugh Redelmeier hugh-pmF8o41NoarQT0dZR+AlfA at public.gmane.org
Wed Dec 10 21:09:44 UTC 2008


| From: Madison Kelly <linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org>

| $ dig google.ca @204.101.251.1

The dig(1) synopsis suggests this should be
	dig @204.101.251.1 google.ca
It seems to accept what you typed.

That IP is of a Sympatico DNS server.

| ;<<>> DiG 9.5.0-P2 <<>> google.ca @204.101.251.1
| ;; global options:  printcmd
| ;; Got answer:
| ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 41733
| ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
| ;; WARNING: recursion requested but not available

That doesn't sound right.

Recursion means that the server is to do the DNS tree walking for you.
You probably need that.

(I gave up on Rogers DNS server and have my own server walk the tree.)

| ;; QUESTION SECTION:
| ;google.ca.			IN	A

This is the question section, and this is what the query should look
like.

But: the Answer, Authority, and Additional sections are missing.  This
means that the query resulted in no information.

| ;; Query time: 79 msec
| ;; SERVER: 204.101.251.1#53(204.101.251.1)
| ;; WHEN: Wed Dec 10 13:43:03 2008
| ;; MSG SIZE  rcvd: 27
| -=-=-=-=-=-=-=-=-
| 
| Notice the empty A record? I tried against My DNS servers, Interlink's DNS
| servers and against a couple of Bell's DNS servers and got the same results.
| 
| After about ten minutes it all came back fine. Curious how widespread this
| was, if at all.

Here's what my server said:

; <<>> DiG 9.3.4-P1 <<>> google.ca
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56970
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;google.ca.			IN	A

;; ANSWER SECTION:
google.ca.		1057	IN	A	72.14.207.104
google.ca.		1057	IN	A	64.233.161.104
google.ca.		1057	IN	A	64.233.187.104

;; AUTHORITY SECTION:
google.ca.		193223	IN	NS	ns3.google.com.
google.ca.		193223	IN	NS	ns4.google.com.
google.ca.		193223	IN	NS	ns1.google.com.
google.ca.		193223	IN	NS	ns2.google.com.

;; ADDITIONAL SECTION:
ns1.google.com.		122818	IN	A	216.239.32.10
ns2.google.com.		122818	IN	A	216.239.34.10
ns3.google.com.		122818	IN	A	216.239.36.10
ns4.google.com.		122818	IN	A	216.239.38.10

;; Query time: 22 msec
;; SERVER: ____________________
;; WHEN: Wed Dec 10 15:59:37 2008
;; MSG SIZE  rcvd: 221

--
The Toronto Linux Users Group.      Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://gtalug.org/wiki/Mailing_lists





More information about the Legacy mailing list