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For reference, at least for Ubuntu, please refer to the following question:
https://askubuntu.com/questions/48568/configure-ip-updater-for-opendns
As of 2018, the following answer to the above question should be useful:
https://askubuntu.com/a/104988...
> Like other solutions
The other solutions are not quite like DNSCrypt. According to an informal 2017 comparison by Tenta of DNSCrypt vs DNS over TLS, DNSCrypt does use partial but not sufficient encryption. Basically it is still determinable that ...
It is unclear if DNSCrypt actually encrypts the DNS traffic or just prevents MITM. I'm afraid only the latter may be true. If so, it demonstrates the need for something better which does both.
From https://en.wikipedia.org/wiki/DNSCrypt :
> DNSCrypt ...