RE: DNS not responding

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>1) Client (10.3.0.11) sends DNS request.
>	[ src == 10.3.0.11:<high_port>, dst == 12.159.185.248:53 ]
>2) Router redirects traffic.
>	[ src == 10.3.0.11:<high_port>, dst == 10.3.0.10:53 ]
>3) Linux server receives packet.
>	[ src == 10.3.0.11:<high_port>, dst == 10.3.0.10:53 ]
>4) Linux server returns packet to sender.
>	[ src == 10.3.0.10:53, dst == 10.3.0.11:<high_port> ]
>5) Client receives return packet.
>	[ src == 10.3.0.10:53, dst == 10.3.0.11:<high_port> ]

When something internally makes a DNS request, it works fine, and likewise,
the packets come in externally to the box.  It's only when my linux box
tries to respond (internal out) to the request.  I know for sure the request
is coming in from 12.159.189.126, to my internal linux box, because I see
this in named.log

Nov 27 20:32:36.369 queries: info: client 12.159.189.126#35332: query:
bl.blueshore.net IN A

However, from 12.159.189.126's point of view, it just times out, because it
never receives the response from my box.



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