[dns-operations] Writeup of Spring Workshop

[Rick Jones]

On 05/12/2015 03:00 AM, Ralf Weber wrote:
> I am not saying that we should not do DNS over TCP. It's in the RFCs.
> But there is a cost on doing traffic over TCP compared to UDP and that
> is the case even if we only consider normal and not DDOS traffic. I'm
> not sure if TCPs role will get significantly bigger over time, given
> that people who operate large chunks of DNS seem to be very careful
> about avoiding it and so far EDNS has done a good job for us.

To what extent does the broadening availability of TCP Fast Open affect 
the cost of TCP versus UDP calculus?

rick jones
http://www.netperf.org/