shell-things/etc/systemd/resolved.conf.d/dot-nextdns.conf

[Resolve]
2a07:a8c0::#dns.nextdns.io 2a07:a8c1::#dns.nextdns.io 45.90.28.0#dns.nextdns.io 45.90.30.0#dns.nextdns.io
Domains=~.
DNSOverTLS=yes
Cache=yes