dig info

[Tech W.]

--- On Mon, 18/5/09, Mark Andrews <Mark_Andrews at isc.org> wrote:

> From: Mark Andrews <Mark_Andrews at isc.org>
> Subject: Re: dig info
> To: "Tech W." <techwww at yahoo.com.cn>
> Cc: bind-users at lists.isc.org
> Received: Monday, 18 May, 2009, 10:35 PM
> 
> In message <980168.77226.qm at web15605.mail.cnb.yahoo.com>,
> "Tech W." writes:
> > 
> > Sometime I dig a domain name, it returns the results
> below:
> > 
> > ;; reply from unexpected source: 59.42.52.246#59721,
> expected 211.66.80.167#5
> > 3
> > ;; reply from unexpected source: 59.42.52.246#59721,
> expected 211.66.80.167#5
> > 3
> > ;; reply from unexpected source: 59.42.52.246#59721,
> expected 211.66.80.167#5
> > 3
> > ;; connection timed out; no servers could be reached
> 
>     Is this a linux box dig is running
> on?  Some linux kernels
>     have the worst possible UDP port
> selection algorithms.  They
>     keep selecting the port that was last
> selected provided it
>     is closed before you get the next port
> selection request.
>     On a box with several short lived UDP
> sockets you will
>     almost certainly get reply traffic
> destined to the last
>     user of the port.
> 
>     This is what is happening here, dig
> seeing replies to
>     whatever was using the port immediately
> before dig was run.
>     
>  


Yes Mark it's a linux box with kernel 2.6.24.
But I still can't understand for your meanings.
Could you please explain it with more clear way?
Thanks again.



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