This will setup dnscrypt-proxy as the only DNS on Ubuntu Server.

1. Change from DHCP to Static IP
   create a backup of /etc/netplan/50-cloud-init.yaml

   $ sudo cp /etc/netplan/50-cloud-init.yaml /etc/netplan/50-cloud-init.yaml.bak

   and then copy below structure for static IP

   network:
       ethernets:
           eth0:
               dhcp4: no
               addresses:
                 - 192.168.X.X/25
               routes:
                 - to: default
                   via: 192.168.X.X
               nameservers:
                 addresses: [127.0.0.1,X.X.X.X,Y.Y.Y.Y]
               optional: true
       version: 2

   and then apply the new netplan

   $ sudo netplan apply

2. Install dnscrypt-proxy

   $ sudo apt install dnscrypt-proxy

3. create a backup of /etc/dnscrypt-proxy/dnscrypt-proxy.toml

   $ sudo cp /etc/dnscrypt-proxy/dnscrypt-proxy.toml /etc/dnscrypt-proxy/dnscrypt-proxy.toml.bak

   and then use your config based on your preference what is important is below:

   server_names = ['doh.tiar.app', 'doh.tiar.app-doh', 'doh.tiar.app-ipv6', 'doh.tiar.app-doh-ipv6','id-gmail', 'id-gmail-doh', 'id-gmail-ipv6', 'id-gmail-doh-ipv6','cloudflare','cloudflare-ipv6','cloudflare-security','cloudflare-security-ipv6']
   
   listen_addresses = []
   
   fallback_resolvers = ['9.9.9.9:53', '8.8.8.8:53']
   
   [sources.'public-resolvers']
   urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v2/public-resolvers.md', 'https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md']
   cache_file = '/var/cache/dnscrypt-proxy/public-resolvers.md'
   minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
   prefix = ''
   

   for the complete example:

   ##############################################
   # #
   # dnscrypt-proxy configuration #
   # #
   ##############################################
   
   ## This is an example configuration file.
   ## You should adjust it to your needs, and save it as "dnscrypt-proxy.toml"
   ##
   ## Online documentation is available here: https://dnscrypt.info/doc
   
   ##################################
   # Global settings #
   ##################################
   
   ## List of servers to use
   ##
   ## Servers from the "public-resolvers" source (see down below) can
   ## be viewed here: https://dnscrypt.info/public-servers
   ##
   ## The proxy will automatically pick working servers from this list.
   ## Note that the require_* filters do NOT apply when using this setting.
   ##
   ## By default, this list is empty and all registered servers matching the
   ## require_* filters will be used instead.
   ##
   ## Remove the leading # first to enable this; lines starting with # are ignored.
   
   server_names = ['doh.tiar.app', 'doh.tiar.app-doh', 'doh.tiar.app-ipv6', 'doh.tiar.app-doh-ipv6','id-gmail', 'id-gmail-doh', 'id-gmail-ipv6', 'id-gmail-doh-ipv6','cloudflare','cloudflare-ipv6','cloudflare-security','cloudflare-security-ipv6']
   
   ## List of local addresses and ports to listen to. Can be IPv4 and/or IPv6.
   ## Example with both IPv4 and IPv6:
   listen_addresses = []
   
   # listen_addresses = ['127.0.0.1:53']
   
   ## Maximum number of simultaneous client connections to accept
   
   max_clients = 250
   
   ## Switch to a different system user after listening sockets have been created.
   ## Note (1): this feature is currently unsupported on Windows.
   ## Note (2): this feature is not compatible with systemd socket activation.
   ## Note (3): when using -pidfile, the PID file directory must be writable by the new user
   
   # user_name = 'nobody'
   
   ## Require servers (from static + remote sources) to satisfy specific properties
   
   # Use servers reachable over IPv4
   ipv4_servers = true
   
   # Use servers reachable over IPv6 -- Do not enable if you don't have IPv6 connectivity
   ipv6_servers = false
   
   # Use servers implementing the DNSCrypt protocol
   dnscrypt_servers = true
   
   # Use servers implementing the DNS-over-HTTPS protocol
   doh_servers = true
   
   ## Require servers defined by remote sources to satisfy specific properties
   
   # Server must support DNS security extensions (DNSSEC)
   require_dnssec = false
   
   # Server must not log user queries (declarative)
   require_nolog = true
   
   # Server must not enforce its own blacklist (for parental control, ads blocking...)
   require_nofilter = true
   
   # Server names to avoid even if they match all criteria
   disabled_server_names = []
   
   ## Always use TCP to connect to upstream servers.
   ## This can be useful if you need to route everything through Tor.
   ## Otherwise, leave this to `false`, as it doesn't improve security
   ## (dnscrypt-proxy will always encrypt everything even using UDP), and can
   ## only increase latency.
   
   force_tcp = false
   
   ## SOCKS proxy
   ## Uncomment the following line to route all TCP connections to a local Tor node
   ## Tor doesn't support UDP, so set `force_tcp` to `true` as well.
   
   # proxy = 'socks5://127.0.0.1:9050'
   
   ## HTTP/HTTPS proxy
   ## Only for DoH servers
   
   # http_proxy = 'http://127.0.0.1:8888'
   
   ## How long a DNS query will wait for a response, in milliseconds.
   ## If you have a network with *a lot* of latency, you may need to
   ## increase this. Startup may be slower if you do so.
   ## Don't increase it too much. 10000 is the highest reasonable value.
   
   timeout = 5000
   
   ## Keepalive for HTTP (HTTPS, HTTP/2) queries, in seconds
   
   keepalive = 30
   
   ## Response for blocked queries. Options are `refused`, `hinfo` (default) or
   ## an IP response. To give an IP response, use the format `a:,aaaa:`.
   ## Using the `hinfo` option means that some responses will be lies.
   ## Unfortunately, the `hinfo` option appears to be required for Android 8+
   
   # blocked_query_response = 'refused'
   
   ## Load-balancing strategy: 'p2' (default), 'ph', 'first' or 'random'
   
   # lb_strategy = 'p2'
   
   ## Set to `true` to constantly try to estimate the latency of all the resolvers
   ## and adjust the load-balancing parameters accordingly, or to `false` to disable.
   
   # lb_estimator = true
   
   ## Log level (0-6, default: 2 - 0 is very verbose, 6 only contains fatal errors)
   
   # log_level = 2
   
   ## Log file for the application, as an alternative to sending logs to
   ## the standard system logging service (syslog/Windows event log).
   ##
   ## This file is different from other log files, and will not be
   ## automatically rotated by the application.
   
   # log_file = 'dnscrypt-proxy.log'
   
   ## When using a log file, only keep logs from the most recent launch.
   
   # log_file_latest = true
   
   ## Use the system logger (syslog on Unix, Event Log on Windows)
   
   # use_syslog = true
   
   ## Delay, in minutes, after which certificates are reloaded
   
   cert_refresh_delay = 240
   
   ## DNSCrypt: Create a new, unique key for every single DNS query
   ## This may improve privacy but can also have a significant impact on CPU usage
   ## Only enable if you don't have a lot of network load
   
   # dnscrypt_ephemeral_keys = false
   
   ## DoH: Disable TLS session tickets - increases privacy but also latency
   
   # tls_disable_session_tickets = false
   
   ## DoH: Use a specific cipher suite instead of the server preference
   ## 49199 = TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
   ## 49195 = TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
   ## 52392 = TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
   ## 52393 = TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305
   ## 4865 = TLS_AES_128_GCM_SHA256
   ## 4867 = TLS_CHACHA20_POLY1305_SHA256
   ##
   ## On non-Intel CPUs such as MIPS routers and ARM systems (Android, Raspberry Pi...),
   ## the following suite improves performance.
   ## This may also help on Intel CPUs running 32-bit operating systems.
   ##
   ## Keep tls_cipher_suite empty if you have issues fetching sources or
   ## connecting to some DoH servers. Google and Cloudflare are fine with it.
   
   # tls_cipher_suite = [52392, 49199]
   
   ## Fallback resolvers
   ## These are normal, non-encrypted DNS resolvers, that will be only used
   ## for one-shot queries when retrieving the initial resolvers list, and
   ## only if the system DNS configuration doesn't work.
   ## No user application queries will ever be leaked through these resolvers,
   ## and they will not be used after IP addresses of resolvers URLs have been found.
   ## They will never be used if lists have already been cached, and if stamps
   ## don't include host names without IP addresses.
   ## They will not be used if the configured system DNS works.
   ## Resolvers supporting DNSSEC are recommended.
   ##
   ## People in China may need to use 114.114.114.114:53 here.
   ## Other popular options include 8.8.8.8 and 1.1.1.1.
   ##
   ## If more than one resolver is specified, they will be tried in sequence.
   
   fallback_resolvers = ['9.9.9.9:53', '8.8.8.8:53']
   
   ## Always use the fallback resolver before the system DNS settings.
   
   ignore_system_dns = true
   
   ## Maximum time (in seconds) to wait for network connectivity before
   ## initializing the proxy.
   ## Useful if the proxy is automatically started at boot, and network
   ## connectivity is not guaranteed to be immediately available.
   ## Use 0 to not test for connectivity at all (not recommended),
   ## and -1 to wait as much as possible.
   
   netprobe_timeout = 60
   
   ## Address and port to try initializing a connection to, just to check
   ## if the network is up. It can be any address and any port, even if
   ## there is nothing answering these on the other side. Just don't use
   ## a local address, as the goal is to check for Internet connectivity.
   ## On Windows, a datagram with a single, nul byte will be sent, only
   ## when the system starts.
   ## On other operating systems, the connection will be initialized
   ## but nothing will be sent at all.
   
   netprobe_address = '9.9.9.9:53'
   
   ## Offline mode - Do not use any remote encrypted servers.
   ## The proxy will remain fully functional to respond to queries that
   ## plugins can handle directly (forwarding, cloaking, ...)
   
   # offline_mode = false
   
   ## Additional data to attach to outgoing queries.
   ## These strings will be added as TXT records to queries.
   ## Do not use, except on servers explicitly asking for extra data
   ## to be present.
   ## encrypted-dns-server can be configured to use this for access control
   ## in the [access_control] section
   
   # query_meta = ["key1:value1", "key2:value2", "token:MySecretToken"]
   
   ## Automatic log files rotation
   
   # Maximum log files size in MB - Set to 0 for unlimited.
   log_files_max_size = 10
   
   # How long to keep backup files, in days
   log_files_max_age = 7
   
   # Maximum log files backups to keep (or 0 to keep all backups)
   log_files_max_backups = 1
   
   #########################
   # Filters #
   #########################
   
   ## Note: if you are using dnsmasq, disable the `dnssec` option in dnsmasq if you
   ## configure dnscrypt-proxy to do any kind of filtering (including the filters
   ## below and blacklists).
   ## You can still choose resolvers that do DNSSEC validation.
   
   ## Immediately respond to IPv6-related queries with an empty response
   ## This makes things faster when there is no IPv6 connectivity, but can
   ## also cause reliability issues with some stub resolvers.
   
   block_ipv6 = false
   
   ## Immediately respond to A and AAAA queries for host names without a domain name
   
   block_unqualified = true
   
   ## Immediately respond to queries for local zones instead of leaking them to
   ## upstream resolvers (always causing errors or timeouts).
   
   block_undelegated = true
   
   ## TTL for synthetic responses sent when a request has been blocked (due to
   ## IPv6 or blacklists).
   
   reject_ttl = 600
   
   ##################################################################################
   # Route queries for specific domains to a dedicated set of servers #
   ##################################################################################
   
   ## See the `example-forwarding-rules.txt` file for an example
   
   # forwarding_rules = 'forwarding-rules.txt'
   
   ###############################
   # Cloaking rules #
   ###############################
   
   ## Cloaking returns a predefined address for a specific name.
   ## In addition to acting as a HOSTS file, it can also return the IP address
   ## of a different name. It will also do CNAME flattening.
   ##
   ## See the `example-cloaking-rules.txt` file for an example
   
   # cloaking_rules = 'cloaking-rules.txt'
   
   ## TTL used when serving entries in cloaking-rules.txt
   
   # cloak_ttl = 600
   
   ###########################
   # DNS cache #
   ###########################
   
   ## Enable a DNS cache to reduce latency and outgoing traffic
   
   cache = true
   
   ## Cache size
   
   cache_size = 4096
   
   ## Minimum TTL for cached entries
   
   cache_min_ttl = 2400
   
   ## Maximum TTL for cached entries
   
   cache_max_ttl = 86400
   
   ## Minimum TTL for negatively cached entries
   
   cache_neg_min_ttl = 60
   
   ## Maximum TTL for negatively cached entries
   
   cache_neg_max_ttl = 600
   
   ##################################
   # Local DoH server #
   ##################################
   
   [local_doh]
   
   ## dnscrypt-proxy can act as a local DoH server. By doing so, web browsers
   ## requiring a direct connection to a DoH server in order to enable some
   ## features will enable these, without bypassing your DNS proxy.
   
   ## Addresses that the local DoH server should listen to
   
   # listen_addresses = ['127.0.0.1:3000']
   
   ## Path of the DoH URL. This is not a file, but the part after the hostname
   ## in the URL. By convention, `/dns-query` is frequently chosen.
   ## For each `listen_address` the complete URL to access the server will be:
   ## `https://` (ex: `https://127.0.0.1/dns-query`)
   
   # path = "/dns-query"
   
   ## Certificate file and key - Note that the certificate has to be trusted.
   ## See the documentation (wiki) for more information.
   
   # cert_file = "localhost.pem"
   # cert_key_file = "localhost.pem"
   
   ###############################
   # Query logging #
   ###############################
   
   ## Log client queries to a file
   
   [query_log]
   
   ## Path to the query log file (absolute, or relative to the same directory as the config file)
   ## On non-Windows systems, can be /dev/stdout to log to the standard output (also set log_files_max_size to 0)
   
   # file = 'query.log'
   
   ## Query log format (currently supported: tsv and ltsv)
   
   format = 'tsv'
   
   ## Do not log these query types, to reduce verbosity. Keep empty to log everything.
   
   # ignored_qtypes = ['DNSKEY', 'NS']
   
   ############################################
   # Suspicious queries logging #
   ############################################
   
   ## Log queries for nonexistent zones
   ## These queries can reveal the presence of malware, broken/obsolete applications,
   ## and devices signaling their presence to 3rd parties.
   
   [nx_log]
   
   ## Path to the query log file (absolute, or relative to the same directory as the config file)
   
   # file = 'nx.log'
   
   ## Query log format (currently supported: tsv and ltsv)
   
   format = 'tsv'
   
   ######################################################
   # Pattern-based blocking (blacklists) #
   ######################################################
   
   ## Blacklists are made of one pattern per line. Example of valid patterns:
   ##
   ## example.com
   ## =example.com
   ## *sex*
   ## ads.*
   ## ads*.example.*
   ## ads*.example[0-9]*.com
   ##
   ## Example blacklist files can be found at https://download.dnscrypt.info/blacklists/
   ## A script to build blacklists from public feeds can be found in the
   ## `utils/generate-domains-blacklists` directory of the dnscrypt-proxy source code.
   
   [blacklist]
   
   ## Path to the file of blocking rules (absolute, or relative to the same directory as the config file)
   
   # blacklist_file = 'blacklist.txt'
   
   ## Optional path to a file logging blocked queries
   
   # log_file = 'blocked.log'
   
   ## Optional log format: tsv or ltsv (default: tsv)
   
   # log_format = 'tsv'
   
   ###########################################################
   # Pattern-based IP blocking (IP blacklists) #
   ###########################################################
   
   ## IP blacklists are made of one pattern per line. Example of valid patterns:
   ##
   ## 127.*
   ## fe80:abcd:*
   ## 192.168.1.4
   
   [ip_blacklist]
   
   ## Path to the file of blocking rules (absolute, or relative to the same directory as the config file)
   
   # blacklist_file = 'ip-blacklist.txt'
   
   ## Optional path to a file logging blocked queries
   
   # log_file = 'ip-blocked.log'
   
   ## Optional log format: tsv or ltsv (default: tsv)
   
   # log_format = 'tsv'
   
   ######################################################
   # Pattern-based whitelisting (blacklists bypass) #
   ######################################################
   
   ## Whitelists support the same patterns as blacklists
   ## If a name matches a whitelist entry, the corresponding session
   ## will bypass names and IP filters.
   ##
   ## Time-based rules are also supported to make some websites only accessible at specific times of the day.
   
   [whitelist]
   
   ## Path to the file of whitelisting rules (absolute, or relative to the same directory as the config file)
   
   # whitelist_file = 'whitelist.txt'
   
   ## Optional path to a file logging whitelisted queries
   
   # log_file = 'whitelisted.log'
   
   ## Optional log format: tsv or ltsv (default: tsv)
   
   # log_format = 'tsv'
   
   ##########################################
   # Time access restrictions #
   ##########################################
   
   ## One or more weekly schedules can be defined here.
   ## Patterns in the name-based blocklist can optionally be followed with @schedule_name
   ## to apply the pattern 'schedule_name' only when it matches a time range of that schedule.
   ##
   ## For example, the following rule in a blacklist file:
   ## *.youtube.* @time-to-sleep
   ## would block access to YouTube during the times defined by the 'time-to-sleep' schedule.
   ##
   ## {after='21:00', before= '7:00'} matches 0:00-7:00 and 21:00-0:00
   ## {after= '9:00', before='18:00'} matches 9:00-18:00
   
   [schedules]
   
   # [schedules.'time-to-sleep']
   # mon = [{after='21:00', before='7:00'}]
   # tue = [{after='21:00', before='7:00'}]
   # wed = [{after='21:00', before='7:00'}]
   # thu = [{after='21:00', before='7:00'}]
   # fri = [{after='23:00', before='7:00'}]
   # sat = [{after='23:00', before='7:00'}]
   # sun = [{after='21:00', before='7:00'}]
   
   # [schedules.'work']
   # mon = [{after='9:00', before='18:00'}]
   # tue = [{after='9:00', before='18:00'}]
   # wed = [{after='9:00', before='18:00'}]
   # thu = [{after='9:00', before='18:00'}]
   # fri = [{after='9:00', before='17:00'}]
   
   #########################
   # Servers #
   #########################
   
   ## Remote lists of available servers
   ## Multiple sources can be used simultaneously, but every source
   ## requires a dedicated cache file.
   ##
   ## Refer to the documentation for URLs of public sources.
   ##
   ## A prefix can be prepended to server names in order to
   ## avoid collisions if different sources share the same for
   ## different servers. In that case, names listed in `server_names`
   ## must include the prefixes.
   ##
   ## If the `urls` property is missing, cache files and valid signatures
   ## must already be present. This doesn't prevent these cache files from
   ## expiring after `refresh_delay` hours.
   
   [sources]
   
   ## An example of a remote source from https://github.com/DNSCrypt/dnscrypt-resolvers
   
   [sources.'public-resolvers']
   urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v2/public-resolvers.md', 'https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md']
   cache_file = '/var/cache/dnscrypt-proxy/public-resolvers.md'
   minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
   prefix = ''
   
   ## Anonymized DNS relays
   
   [sources.'relays']
   urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v2/relays.md', 'https://download.dnscrypt.info/resolvers-list/v2/relays.md']
   cache_file = '/var/cache/dnscrypt-proxy/relays.md'
   minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
   refresh_delay = 72
   prefix = ''
   
   ## Quad9 over DNSCrypt - https://quad9.net/
   
   # [sources.quad9-resolvers]
   # urls = ['https://www.quad9.net/quad9-resolvers.md']
   # minisign_key = 'RWQBphd2+f6eiAqBsvDZEBXBGHQBJfeG6G+wJPPKxCZMoEQYpmoysKUN'
   # cache_file = 'quad9-resolvers.md'
   # prefix = 'quad9-'
   
   ## Another example source, with resolvers censoring some websites not appropriate for children
   ## This is a subset of the `public-resolvers` list, so enabling both is useless
   
   # [sources.'parental-control']
   # urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v2/parental-control.md', 'https://download.dnscrypt.info/resolvers-list/v2/parental-control.md']
   # cache_file = 'parental-control.md'
   # minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
   
   #########################################
   # Servers with known bugs #
   #########################################
   
   [broken_implementations]
   
   # Cisco servers currently cannot handle queries larger than 1472 bytes, and don't
   # truncate reponses larger than questions as expected by the DNSCrypt protocol.
   # This prevents large responses from being received over UDP and over relays.
   #
   # The `dnsdist` server software drops client queries larger than 1500 bytes.
   # They are aware of it and are working on a fix.
   #
   # The list below enables workarounds to make non-relayed usage more reliable
   # until the servers are fixed.
   
   fragments_blocked = ['cisco', 'cisco-ipv6', 'cisco-familyshield', 'cisco-familyshield-ipv6', 'quad9-dnscrypt-ip4-filter-alt', 'quad9-dnscrypt-ip4-filter-pri', 'quad9-dnscrypt-ip4-nofilter-alt', 'quad9-dnscrypt-ip4-nofilter-pri', 'quad9-dnscrypt-ip6-filter-alt', 'quad9-dnscrypt-ip6-filter-pri', 'quad9-dnscrypt-ip6-nofilter-alt', 'quad9-dnscrypt-ip6-nofilter-pri', 'cleanbrowsing-adult', 'cleanbrowsing-family-ipv6', 'cleanbrowsing-family', 'cleanbrowsing-security']
   
   #################################################################
   # Certificate-based client authentication for DoH #
   #################################################################
   
   # Use a X509 certificate to authenticate yourself when connecting to DoH servers.
   # This is only useful if you are operating your own, private DoH server(s).
   # 'creds' maps servers to certificates, and supports multiple entries.
   # If you are not using the standard root CA, an optional "root_ca"
   # property set to the path to a root CRT file can be added to a server entry.
   
   [doh_client_x509_auth]
   
   #
   # creds = [
   # { server_name='myserver', client_cert='client.crt', client_key='client.key' }
   # ]
   
   ################################
   # Anonymized DNS #
   ################################
   
   [anonymized_dns]
   
   ## Routes are indirect ways to reach DNSCrypt servers.
   ##
   ## A route maps a server name ("server_name") to one or more relays that will be
   ## used to connect to that server.
   ##
   ## A relay can be specified as a DNS Stamp (either a relay stamp, or a
   ## DNSCrypt stamp), an IP:port, a hostname:port, or a server name.
   ##
   ## The following example routes "example-server-1" via `anon-example-1` or `anon-example-2`,
   ## and "example-server-2" via the relay whose relay DNS stamp
   ## is "sdns://gRIxMzcuNzQuMjIzLjIzNDo0NDM".
   ##
   ## !!! THESE ARE JUST EXAMPLES !!!
   ##
   ## Review the list of available relays from the "relays.md" file, and, for each
   ## server you want to use, define the relays you want connections to go through.
   ##
   ## Carefully choose relays and servers so that they are run by different entities.
   ##
   ## "server_name" can also be set to "*" to define a default route, but this is not
   ## recommended. If you do so, keep "server_names" short and distinct from relays.
   
   # routes = [
   # { server_name='example-server-1', via=['anon-example-1', 'anon-example-2'] },
   # { server_name='example-server-2', via=['sdns://gRIxMzcuNzQuMjIzLjIzNDo0NDM'] }
   # ]
   
   # skip resolvers incompatible with anonymization instead of using them directly
   
   skip_incompatible = false
   
   ###############################
   # DNS64 #
   ###############################
   
   ## DNS64 is a mechanism for synthesizing AAAA records from A records.
   ## It is used with an IPv6/IPv4 translator to enable client-server
   ## communication between an IPv6-only client and an IPv4-only server,
   ## without requiring any changes to either the IPv6 or the IPv4 node,
   ## for the class of applications that work through NATs.
   ##
   ## There are two options to synthesize such records:
   ## Option 1: Using a set of static IPv6 prefixes;
   ## Option 2: By discovering the IPv6 prefix from DNS64-enabled resolver.
   ##
   ## If both options are configured - only static prefixes are used.
   ## (Ref. RFC6147, RFC6052, RFC7050)
   ##
   ## Do not enable unless you know what DNS64 is and why you need it, or else
   ## you won't be able to connect to anything at all.
   
   [dns64]
   
   ## (Option 1) Static prefix(es) as Pref64::/n CIDRs.
   # prefix = ["64:ff9b::/96"]
   
   ## (Option 2) DNS64-enabled resolver(s) to discover Pref64::/n CIDRs.
   ## These resolvers are used to query for Well-Known IPv4-only Name (WKN) "ipv4only.arpa." to discover only.
   ## Set with your ISP's resolvers in case of custom prefixes (other than Well-Known Prefix 64:ff9b::/96).
   ## IMPORTANT: Default resolvers listed below support Well-Known Prefix 64:ff9b::/96 only.
   # resolver = ["[2606:4700:4700::64]:53", "[2001:4860:4860::64]:53"]
   
   ########################################
   # Static entries #
   ########################################
   
   ## Optional, local, static list of additional servers
   ## Mostly useful for testing your own servers.
   
   [static]
   
   # [static.'myserver']
   # stamp = 'sdns:AQcAAAAAAAAAAAAQMi5kbnNjcnlwdC1jZXJ0Lg'
   

4. Stop and disable the systemd-resolved service

   
   
   $ sudo systemctl stop systemd-resolved.service
   $ sudo systemctl disable systemd-resolved.service
   
   

5. Create these files and ensure the permission are correct

   $ sudo touch /var/cache/dnscrypt-proxy/public-resolvers.md
   $ sudo touch /var/cache/dnscrypt-proxy/public-resolvers.md.minisig
   $ sudo touch /var/cache/dnscrypt-proxy/relays.md
   $ sudo touch /var/cache/dnscrypt-proxy/relays.md.minisig
   $ sudo chown _dnscrypt-proxy:nogroup /var/cache/dnscrypt-proxy/public-resolvers.md
   $ sudo chown _dnscrypt-proxy:nogroup /var/cache/dnscrypt-proxy/public-resolvers.md.minisig
   $ sudo chown _dnscrypt-proxy:nogroup /var/cache/dnscrypt-proxy/relays.md
   $ sudo chown _dnscrypt-proxy:nogroup /var/cache/dnscrypt-proxy/relays.md.minisig
   $ sudo chmod 644 /var/cache/dnscrypt-proxy/public-resolvers.md
   $ sudo chmod 644 /var/cache/dnscrypt-proxy/public-resolvers.md.minisig
   $ sudo chmod 644 /var/cache/dnscrypt-proxy/relays.md
   $ sudo chmod 644 /var/cache/dnscrypt-proxy/relays.md.minisig

6. Disable the DNSStub

   $ sudo nano /etc/systemd/resolved.conf

   remove the comment and change below to no

   DNSStubListener=no

7. stop the dnscrypt-proxy socket service and change the IP

   $ sudo systemctl stop dnscrypt-proxy.socket
   $ sudo nano /usr/lib/systemd/system/dnscrypt-proxy.socket

   Modify below option

   ListenStream=127.0.0.1:53
   ListenDatagram=127.0.0.1:53

8. Reboot the server

   $ sudo reboot

Check if everything works as intention

1. Check your configuration:

   $ dnscrypt-proxy -check -config /etc/dnscrypt-proxy/dnscrypt-proxy.toml

   

2. Test resolve DNS with dnscrypt-proxy

   $ sudo dnscrypt-proxy -resolve reddit.com -config /etc/dnscrypt-proxy/dnscrypt-proxy.toml

   

3. Dig from previous DNS
   
   to dnscrypt-proxy