named tcp dos?

Randy Bush randy at
Thu Aug 2 20:16:13 UTC 2018

>>>> ... 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.


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