Re: Update of RFC 2606 based on the recent ICANN changes ?

Joe Abley <> Tue, 08 July 2008 02:55 UTC

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From: Joe Abley <>
To: James Seng <>
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Subject: Re: Update of RFC 2606 based on the recent ICANN changes ?
Date: Mon, 7 Jul 2008 22:55:01 -0400
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On 7 Jul 2008, at 21:36, James Seng wrote:

>> And all of the questions I asked 10 years ago said that TLDs on  
>> that latter
>> scale would be problematic to the root.
> Was that pre-Anycast or post-Anycast?

There are plenty of examples of people hosting large, infrastructure- 
type zones using servers and software that are conventional, commodity  
choices. NSD and BIND9 are both quite capable of hosting zones with  
single-digit millions of delegations without needing special care and  
feeding, for example.

Whether the DNS service for a zone is anycast or not has some, but  
really not that much relevance when you're considering the risk of an  
engorged root zone. I don't read anything in the layer-9 musings I've  
seen so far to suggest that the bar to entry for new TLDs will be so  
low that we'll see widespread TLD tasting and churn, for example,  
sufficient to make far-flung anycast instances struggle to keep up.

I'm not suggesting that growth should be allowed to happen without  
considering the technical consequences. However, I believe in practice  
with the headroom in systems and network that root server operators  
generally install anyway, there's considerable room for growth and the  
general argument that growth in the root zone will undermine stability  
sounds more like hysteria than science.

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