DNS over TLS configuration for unbound, including Google DNS, Cloudflare DNS and Quad9 DNS

DNS over TLS for unbound

server:
    logfile: ""
#    verbosity: 2
    username: "nobody"
    interface: 0.0.0.0
    access-control: 0.0.0.0/0 allow
    prefetch: yes

    # include: "/opt/unbound/local.conf"
    # include: "/opt/unbound/customize.conf"

    # proxy
    local-data: "media.com A 192.168.1.151"
    local-data: "proxy.com CNAME media.com"
    
    tls-cert-bundle: "/etc/ssl/cert.pem"
# ---------------------------------------------------------------------------------------------
# DNS over TLS
# ---------------------------------------------------------------------------------------------
forward-zone:
    name: .
    forward-tls-upstream: yes

    ## Google
    forward-addr: 8.8.8.8@853#dns.google
    forward-addr: 8.8.4.4@853#dns.google
    forward-addr: 2001:4860:4860::8888@853#dns.google
    forward-addr: 2001:4860:4860::8844@853#dns.google

    ## Cloudflare
    forward-addr: 1.1.1.1@853#cloudflare-dns.com
    forward-addr: 1.0.0.1@853#cloudflare-dns.com
    forward-addr: 2606:4700:4700::1111@853#cloudflare-dns.com
    forward-addr: 2606:4700:4700::1001@853#cloudflare-dns.com

    ## Quad9  ( Slowest, only serve as backup when the faster are temporarily down. )
    forward-addr: 9.9.9.9@853#dns.quad9.net
    forward-addr: 9.9.9.10@853#dns.quad9.net
    forward-addr: 2620:fe::fe@853#dns.quad9.net
    forward-addr: 2620:fe::10@853#dns.quad9.net


# ---------------------------------------------------------------------------------------------
# DNS fast
# ---------------------------------------------------------------------------------------------
# forward-zone:
#     name: .
#     forward-tls-upstream: yes
#     forward-addr: 1.1.1.1
#     forward-addr: 1.0.0.1
#     forward-addr: 8.8.8.8
#     forward-addr: 8.8.4.4

Replace 9.9.9.10 with 149.112.112.112

Replace 2620:fe::10 with 2620:fe::9