maybe a dumb idea on how to fix the dns problems i don't know....

Darden, Patrick S. darden at
Mon Aug 11 07:50:14 CDT 2008

I think Colin just said everything I said, but in 1/10'th the words.
And he posted before me.  Drats.

--Patrick Darden

-----Original Message-----
From: Colin Alston [mailto:karnaugh at]
Sent: Monday, August 11, 2008 8:38 AM
To: Joe Greco
Cc: nanog at
Subject: Re: maybe a dumb idea on how to fix the dns problems i don't

Joe Greco wrote:
>> Unix machines set up by anyone with half a brain run a local caching
>> server, and use forwarders. IE, the nameserver process can establish a
>> persistent TCP connection to its trusted forwarders, if we just let it.
> Organizations often choose not to do this because doing so involves more
> risk and more things to update when the next vulnerability appears.  In
> many cases, you are suggesting additional complexity and management 
> requirements.  A hosting company, for example, might have 20 racks of
> machines with 40 machines each, which is 800 servers.  If half of those
> are UNIX, then you're talking about 402 nameservers instead of just 2.  

[Customers] <--/UDP/--> [DNS Cache] <--/TCP/--> [DNS servers]

Not so?

Of course, one shouldn't let the rest of the internet touch your DNS 
Cache query interface... but that's just obvious.

I mentioned this a while ago though, so I demand credit ;P Also, I think 
there is probably an IETF DNS WG list where this fits on topic (I have 
no idea what it may be though).

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