DNS versus NAT ?

[Tom Samplonius]

...
> But much or most DNS is performed via connectionless UDP datagrams, so I
> am at a loss to understand or even imagine how two or more instances of,
> say, Unbound... or Bind for that matter... could successfully co-exist,
> on a single home network, together, behind a single typical SOHO router.
...

UDP packets have source and destination port numbers, just like TCP.  So even though UDP is connectionless, the state can be tracked in the NAT table by the source-destination port numbers just like TCP.



Tom
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