first commit

unbound.conf.d/pi-hole-tls.conf

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+## DNS Over TLS, Simple ENCRYPTED recursive caching DNS, TCP port 853
+## unbound.conf, original at https://calomel.org/unbound_dns.html
+# tweaks by bartonbytes.com
+server:
+access-control: 127.0.0.0/8 allow
+cache-max-ttl: 14400
+cache-min-ttl: 600
+do-tcp: yes
+hide-identity: yes
+hide-version: yes
+interface: 127.0.0.1
+minimal-responses: yes
+prefetch: yes
+qname-minimisation: yes
+rrset-roundrobin: yes
+#ssl-upstream: yes
+use-caps-for-id: yes
+verbosity: 0
+port: 5533
+    tls-upstream: yes                                          
+    tls-cert-bundle: "/etc/ssl/certs/ca-certificates.crt"
+#
+forward-zone:
+name: "."
+forward-addr: 9.9.9.9@853 # quad9.net primary
+#forward-addr: 1.1.1.1@853 # cloudflare primary
+forward-addr: 149.112.112.112@853 # quad9.net secondary
+#forward-addr: 1.0.0.1@853 # cloudflare secondary

unbound.conf.d/pi-hole.bak

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+server:
+    # If no logfile is specified, syslog is used
+    # logfile: "/var/log/unbound/unbound.log"
+    verbosity: 0
+
+    interface: 127.0.0.1
+    port: 5335
+    do-ip4: yes
+    do-udp: yes
+    do-tcp: yes
+
+    # May be set to yes if you have IPv6 connectivity
+    do-ip6: yes
+
+    # You want to leave this to no unless you have *native* IPv6. With 6to4 and
+    # Terredo tunnels your web browser should favor IPv4 for the same reasons
+    prefer-ip6: no
+
+    # Use this only when you downloaded the list of primary root servers!
+    # If you use the default dns-root-data package, unbound will find it automatically
+    #root-hints: "/var/lib/unbound/root.hints"
+
+    # Trust glue only if it is within the server's authority
+    harden-glue: yes
+
+    # Require DNSSEC data for trust-anchored zones, if such data is absent, the zone becomes BOGUS
+    harden-dnssec-stripped: yes
+
+    # Don't use Capitalization randomization as it known to cause DNSSEC issues sometimes
+    # see https://discourse.pi-hole.net/t/unbound-stubby-or-dnscrypt-proxy/9378 for further details
+    use-caps-for-id: no
+
+    # Reduce EDNS reassembly buffer size.
+    # Suggested by the unbound man page to reduce fragmentation reassembly problems
+    edns-buffer-size: 1472
+
+    # Perform prefetching of close to expired message cache entries
+    # This only applies to domains that have been frequently queried
+    prefetch: yes
+
+    # One thread should be sufficient, can be increased on beefy machines. In reality for most users running on small networks or on a single machine, it should be unnecessary to seek performance enhancement by increasing num-threads above 1.
+    num-threads: 1
+
+    # Ensure kernel buffer is large enough to not lose messages in traffic spikes
+    so-rcvbuf: 1m
+
+    # Ensure privacy of local IP ranges
+    private-address: 192.168.0.0/16
+    private-address: 169.254.0.0/16
+    private-address: 172.16.0.0/12
+    private-address: 10.0.0.0/8
+    private-address: fd00::/8
+    private-address: fe80::/10

unbound.conf.d/qname-minimisation.conf

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+server:
+    # Send minimum amount of information to upstream servers to enhance
+    # privacy. Only sends minimum required labels of the QNAME and sets
+    # QTYPE to NS when possible.
+
+    # See RFC 7816 "DNS Query Name Minimisation to Improve Privacy" for
+    # details.
+
+    qname-minimisation: yes

unbound.conf.d/root-auto-trust-anchor-file.conf

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+server:
+    # The following line will configure unbound to perform cryptographic
+    # DNSSEC validation using the root trust anchor.
+    auto-trust-anchor-file: "/var/lib/unbound/root.key"