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DNS over...

DNS over DONUTS

DONUTS expands to “DNS over normal, unencrypted TCP streams”: a deliberately literal reminder that DNS can run over a simple stream transport.

DONUTStransportnovelty

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Screenshot used in the talk for DNS over DONUTS
Screenshot used in the original talk. Select the image to view it full size.

DONUTS means DNS over normal, unencrypted TCP streams. The example treats a generic TCP connection as the transport below DNS.

It is a useful reminder that a DNS transport can be technically simple and still unusual in practice. The name is also very good.