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To: Alex Kamantauskas <alexk@tugger.net>
Cc: Mats Dufberg <dufberg@nic-se.se>, dnsop@cafax.se
From: "Matt Crawford" <crawdad@fnal.gov>
Date: Tue, 03 Apr 2001 11:02:28 -0500
In-reply-to: Your message of Tue, 03 Apr 2001 11:45:09 EDT. <Pine.GSO.4.33.0104031140590.23074-100000@karlheinz.appliedtheory.com>
Sender: owner-dnsop@cafax.se
Subject: Re: Strange behavior from resolvers?

> > I have a guess, but I haven't tested it yet.  Something between the
> > internet and those two servers ns1/2.obol-net.net is refusing packets
> > with UDP source port 53.
> 
>  If that were the case, than all queries would fail, but an SOA query
>  still works:
> 
>   root/ns1:/ # dig obol-net.net soa
>   ;; ANSWER SECTION:
>   obol-net.net.           1D IN SOA       ns1.obol-net.net.

No, no.  *source* address.  Of packets coming from the *outside*.
It would be a goofy thing to do, but it fits the observations.

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