Enable/Disable DNS-over-TLS on Fedora

stubby-onoff.sh

#!/bin/bash
# mkdir -p $HOME/bin && cd $_ && wget https://gist.githubusercontent.com/frafra/a1ca3d5eff81e6c6aebd8fab12b00695/raw/stubby-onoff.sh -O stubby-onoff && chmod +x $_ && cd -

set -ex

[ $USER == "root" ] || exec sudo $0

pkgs="getdns-stubby crudini"
rpm -q $pkgs || dnf install -y $pkgs
conf=/etc/NetworkManager/NetworkManager.conf
cp $conf $conf.bak
systemctl stop NetworkManager
if [ "$(crudini --get $conf main dns)" == "none" ]
then
  echo "Disable stubby"
  crudini --del $conf main dns
  systemctl stop stubby
  systemctl disable stubby
else
  echo "Enable stubby"
  crudini --set $conf main dns none
  systemctl start stubby
  systemctl enable stubby
  echo -e 'nameserver 127.0.0.1\nnameserver ::1' > /etc/resolv.conf
fi
systemctl start NetworkManager