DNS/KnotResolver/ubuntuについて、ここに記述してください。
https://www.knot-resolver.cz/download/
Debian / Ubuntu
wget https://secure.nic.cz/files/knot-resolver/knot-resolver-release.deb dpkg -i knot-resolver-release.deb apt update
apt install -y knot-resolver
Startup: https://knot-resolver.readthedocs.io/en/stable/quickstart-startup.html
$ sudo systemctl start kresd@1.service
Unpacking lua-psl:amd64 (0.3-1) ... Setting up lua-lpeg:amd64 (1.0.2-1) ... Setting up lua-fifo (0.2-3) ... Setting up lua-cqueues:amd64 (20190813-1) ... Setting up lua-compat53:amd64 (0.7-2) ... Setting up lua-bit32:amd64 (5.3.0-3) ... Setting up lua-psl:amd64 (0.3-1) ... Setting up libzscanner3:amd64 (3.0.0-1) ... Setting up lua-basexx (0.3-2) ... Setting up libluajit-5.1-common (2.1.0~beta3+dfsg-5.1build1) ... Setting up lua-lpeg-patterns (0.4-1) ... Setting up libdnssec8:amd64 (3.0.0-1) ... Setting up lua-binaryheap (0.4-1) ... Setting up lua-luaossl:amd64 (20161214-1build2) ... Setting up libknot11:amd64 (3.0.0-1) ... Setting up libluajit-5.1-2:amd64 (2.1.0~beta3+dfsg-5.1build1) ... Setting up knot-resolver (5.1.3-2) ... Setting up lua-http (0.3-90) ... Processing triggers for man-db (2.9.1-1) ... Processing triggers for libc-bin (2.31-0ubuntu9) ...