sudo apt-get install unbound
"$tool"/local/insserv-remove unbound
-sudo install -m 644 -o root -g root /dev/stdin /etc/resolv.conf <<-EOF
- search ${local_host#*.}
- nameserver 127.0.0.1
- #nameserver ${local_host_nameserver}
- EOF
sudo install -m 440 -o unbound -g unbound \
"$tool"/etc/unbound/named.cache \
/etc/unbound/named.cache