Re: HELP:DNS cache

["kennyen" <kennyen@xxxxxxxxxxx>]

em...may be our configuration a bit different, once my dns server is down i 
can't ping any hosts but only what were inside my "/etc/hosts" file. or,my 
linux box will resolve via secondary dns server. is good to know if some one 
can tell the command "abc" :)


----- Original Message ----- 
From: "Wei Dong" <weid@xxxxxxxxxxxxxxxx>
To: "kennyen" <kennyen@xxxxxxxxxxx>
Cc: <linux-net@xxxxxxxxxxxxxxx>
Sent: Thursday, April 14, 2005 1:16 PM
Subject: Re: HELP:DNS cache


> Hi kennyen:
>    I'm very glad that you've answered my question.But what i wanted to 
> konw is the command to empty the DNS cache.For example:
>    If i know the command to empty the DNS cache,and it is "abc". I've run 
> BIND9,then i enter "ping www.test.com" The DNS server will return the IP 
> Address 192.168.0.1. Then i shutdown DNS server,but the resolution 
> messages still in client pc DNS cache(OS Linux).I enter "ping 
> www.test.com", the ping program still can ping 192.168.0.1.After i enter 
> the command "abc",i run ping program ,the ping program will show "Unknow 
> host name",now what i want to konw is the command "abc".
> ----- Original Message ----- 
> From: "kennyen" <kennyen@xxxxxxxxxxx>
> To: "Wei Dong" <weid@xxxxxxxxxxxxxxxx>; <linux-net@xxxxxxxxxxxxxxx>
> Sent: Thursday, April 14, 2005 12:56 PM
> Subject: Re: HELP:DNS cache
>
>
> > try host command,
> >
> > example,
> >
> > host yahoo.com [nameserver]
> >
> >
> >
> > ----- Original Message ----- 
> > From: "Wei Dong" <weid@xxxxxxxxxxxxxxxx>
> > To: <linux-net@xxxxxxxxxxxxxxx>
> > Sent: Thursday, April 14, 2005 10:39 AM
> > Subject: HELP:DNS cache
> >
> >
> > > Dear All:
> > >    Because i want to test dns,and there is a problem
> > >    I want to test dns server from client pc.And we know client pc(OS 
> > > Linux) has a DNS cache,
> > >    it saves the lastest DNS resolution messages,and it will influence my 
> > > test result.
> > >    So i want to know how to empty the DNS cache in client pc(OS Linux).
> > > -
> > > : send the line "unsubscribe linux-net" in
> > > the body of a message to majordomo@xxxxxxxxxxxxxxx
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