[CentOS] Re: CentOS Digest, Vol 4, Issue 10

 >Message: 55
 >Date: Tue, 10 May 2005 15:01:56 +0800
 >From: Mark Quitoriano <markquitoriano at gmail.com>
 >Subject: Re: [CentOS] bind and caching-nameserver
 >To: CentOS mailing list <centos at centos.org>
 >Message-ID: <6b542ec9050510000161fff8d3 at mail.gmail.com>
 >Content-Type: text/plain; charset=ISO-8859-1

 >well that's my problem with bind. once i cut myself to the internet i
 >can't resolve all domain. i did this as a test i ping google.com first
 >while i am connected to the net and then i disconnect my cable and try
 >to ping it again but it can't resolve google.com anymore, my
 >resolve.conf is "nameserver 127.0.0.1", and i don't know how to
 >configure bind to cache domain's ip addressess at least 1 day or so.

This seems like normal behavior to me.  If by "cut myself to the 
internet", you mean physical disconnection (or all ports blocked), then 
how would ping receive a reply from google.com?  You may be able to make 
DNS lookup requests, with dig or nslookup, but ping requires an actual 
connection to the address being queried, which it seems to be 
disconnected for you (dialup?).

Lance Lucas