Re: do routers always need permanent DNS entries?

From: jack (not_at_all.org)
Date: 05/22/04


Date: Sat, 22 May 2004 11:47:37 +0200

Cameron Kerr wrote:
> P Gentry <rdgentry1@cablelynx.com> wrote:
>
>
>>To OP -- DNS is not needed/wanted on a router. Especially a router!
>
>
> Just out of curiosity, why do you say that? (Especially ...)

Sorry for butting in,

In a properly configured environment, the router will never have to
care about names, but make its routing decisions only on the IP in the
destination field. - Otherwise, imagine the overhead when for every
single packet the router will trigger a dns query...

One thing that should be emphasized is that in this "fli4l" thing,
the router acts as gateway and is - in most cases - one P of PPP.
In this situation, it may make sense to configure it as a dns proxy,
since only on this box the ppp option "usepeerdns" can take effect.

Normally, though, a plain router must rely on properly formed IP
packets that it will shove from A to B. So it is the clients' respon-
sibility to resolve names in the first place.

Cheers, Jack.

-- 
----------------------------------------------------------------------
My personal reading of the string "MicroSoft" expands to "NanoWeak"...

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