  Domain name system communication may provide sensitive information on users'
Internet activity. DNS-over-TLS and DNS-over-HTTPS are proposals aiming at
increasing the privacy of Internet end users. In this paper we present an
overview of the current state in the deployment of DNS-over-HTTPS (DoH)
implementations complemented by measurements of DoH traffic in terms of the
incurred overhead and the possibility of the DoH detection based on the
inherent characteristics of the communication patterns.
