Re: [ga] Re: IPv6 and root servers

[Karl Auerbach <karl@xxxxxxxxxxxx>]

Stephane Bortzmeyer wrote:

> > Is there a reason why they're not ALL on IPv6 (in addition to IPv4)?
> > Only 5 out of the 13 have IPv6 addresses.
> Wel, you certainly know that nobody supervises the entire set of root
> name servers?  Each root server operator does as he want and enables
> IPv6 or not.
You usually seem to have a good knowledge of who is doing what in these 
areas and I'm hoping you might have some answers or pointers for a 
couple of questions.
Do you happen to know if there are any measurements of the IPv4 and IPv6 
root query rates?  I'm kinda curious to see how, and particularly 
whether, the ratio of IPv6 to IPv4 queries is increasing over time.
I guess I'm also looking for two distinct measurements, which would be 
queries of any kind carried *in* IPv4 vs IPv6 and, separately, queries 
*for* IPv4 or IPv6 records (or either).
Another interesting bit of data would be the percentage of queries that 
had the truncated bit set and how many TCP based queries occurred.  The 
reason I'm interested in that is I have concern that as IDN names (which 
tend to require more bytes to express) are increasingly used that those 
roots (and TLD servers) that don't do EDNS (are they any?) will send 
back truncated responses that may cause TCP based follow-up queries. 
I'm concerned that there might be - and I'm merely speculating that 
there might be - some kind of inflection point in which we might find 
that suddenly the load on DNS servers increases because of a UDP to TCP 
transition resulting from IDN names.
By-the-way, In the next few months it is likely that I'll be upgrading a 
couple of my own name servers to respond to V6 based queries (at least 
those of my servers that are located where they have native IPv6 
connectivity).
                --karl--