On Sat, 2 Nov 2019, Eric Rescorla wrote:
It's easy enough to imagine an EDNS option that asks whether a server
supports ADoT, that the client can use as a signal to try again on
port 853.
Sure. One reason you might be sad about this is that it has an extra round trip.
Indeed, but assuming the stub remembers what it's probed recently, the
number of extra round trips might not be all that high. This strikes me
as an area where some experiments or simulations could be very
informative.
Regards,
John Levine, [email protected], Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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