ada yg bisa bantu kenapa ini terjadi?
- mikrotik sbg router & proxy,
- ping dari client ke semua site reply,
- nslookup dari client bisa resolve dgn baik,
- tetapi tidak bisa browsing ke beberapa situs dgn error yg 
muncul di browser client :

-----------------------------------------------------------------
The requested URL could not be retrieved

While trying to retrieve the URL: http://www.google.com/firefox?

The following error was encountered:

     Unable to determine IP address from host name for 
www.google.com

The dnsserver returned:

     No DNS records

This means that:

  The cache was not able to resolve the hostname presented in the 
URL.
  Check if the address is correct.

Your cache administrator is [email protected]
Generated Wed, 17 Dec 2008 18:21:06 GMT by proxy (squid/2.5.STABLE9)
----------------------------------------------------------------

terima kasih,

*terjadi setelah isp mengganti ip primary dns nya [adakah 
hubungannya?]


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