--- On Mon, 18/5/09, Mark Andrews <mark_andr...@isc.org> wrote:
> From: Mark Andrews <mark_andr...@isc.org>
> Subject: Re: dig info
> To: "Tech W." <tech...@yahoo.com.cn>
> Cc: bind-users@lists.isc.org
> Received: Monday, 18 May, 2009, 10:35 PM
>
> In message <980168.77226...@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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