Lookup and ping different after DNS flush ...

Question

Lookup and ping different after DNS flush ...

Could somebody help me here please...

<code>

macbook-2:~ steve$ dscacheutil -flushcache
macbook-2:~ steve$ dig www.stephan-zehrer.de

; <<>> DiG 9.4.3-P1 <<>> www.stephan-zehrer.de
....

;; QUESTION SECTION:
;www.stephan-zehrer.de. IN A

;; ANSWER SECTION:
www.stephan-zehrer.de. 85315 IN CNAME ghs.google.com.
ghs.google.com. 2375 IN CNAME ghs.l.google.com.
ghs.l.google.com. 284 IN A 74.125.43.121

...

macbook-2:~ steve$ ping www.stephan-zehrer.de
PING www.stephan-zehrer.de (84.38.66.166): 56 data bytes
64 bytes from 84.38.66.166: icmp_seq=0 ttl=55 time=24.970 ms

</code>

some comments:
I updated yesterday the DNS entries for this domain (to google site). Today I still see the old page in Safari,Firefox and Chrome (Beta) on my Mac (which run on my server with the ip 84.38.66.166)
e.g. in Windows 7 in a Fusion VM I see the new page.
I only found some hints about flush the DNS cache but as you see it did not help.
Is there a problem with my DNS setup or an other thing I missed?

THX

Stephan

Mac Book, Mac OS X (10.5.7), Model Identifier: MacBook3,1

Posted on Jun 7, 2009 12:02 AM

Reply

Answer 1

Jun 7, 2009 4:00 AM in response to stephan.zehrer

Hi Stephan

DNS looks good, as far as I can tell. You need to tell Google (blogspot, I assume?) that it has to serve the respective page when asked for www.stephan-zehrer.de via CNAME. But I bet you did that, as I see 74.125.77.121 answering when opening the page in Firefox (using a nifty little plugin called DND Domain Details).
The flushcache command is also correct... Do you use a proxy from where you try to access your page? A lot of universities do that, so you might want to talk to the local system administrator and ask him when he thinks the proxy refreshes the page.

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Answer 2

Jun 7, 2009 12:39 PM in response to madconqueror

Found it ... I am the local system admin 🙂

You should never change something in the /etc/hosts and forget it 🙂

Took a while but after my sport session today I had the idea ... hosts file ... and correct hard coded entry for my domain from the beginning of this year where I have to move my server ...

so thx ...

Greetings

Stephan

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