named tcp dos?

[Randy Bush]

>>>> ... are there that many folk doing tcp out there?
>>> All name servers fall back to TCP when they receive truncated replies.
>> 
>> we know the protocol.  [ and we know folk have idiot middleboxen ]
>> 
>> what i was asking was the distribution of this in the wild
> 
> one word: DNSSEC

i.e. it is in a contest with ipv6 for non-deployment  :(

let me try and phrase my question to narrow the result to a number as
opposed to a religion.

estimate or measure the distribution of the ratio of udp to tcp queries
on say 100 cctld servers.

randy