Pi-Hole docker setup with DNSCrypt-Proxy 2

README.md

This will setup Pi-Hole with DNS-Over-HTTPS (DoH) enabled, using dnscrypt-proxy as a DoH proxy — which is an alternative to cloudflared, as explained in the Cloudflare docs. Inspired from https://github.com/losuler/pihole-dnscrypt-docker.

Install Pi-Hole on Docker

• Docs: https://github.com/pi-hole/docker-pi-hole/
• No need for log2ram on the NanoPi Neo2, as it already has armbian-ramlog (can be confirmed with df). Otherwise it can help to not wear SD card too fast.

Create docker-compose.yml and etc-dnscrypt-proxy/dnscrypt-proxy.toml, then to install/update:

cd ~/pihole
docker-compose pull && docker-compose up -d

Change DNS on Router

=> https://yescrowd.optus.com.au/t5/Broadband-Telephony/Huawei-B525-4G-router-Fix-for-missing-DNS-setting/td-p/529501

The Huawei B525/B715 router has no apparent DNS settings in the web user interface (UI). The DNS settings are available, and will work, they are just hidden in the Web UI.

1. Go to the DHCP settings screen of the router
2. Enter the following in the Console:

$('#dhcp_dns_statistic').show();
$('#dhcp_primary_dns').show();
$('#dhcp_secondary_dns').show();

3. You can now enter your own DNS settings and click the "Apply" button

(optional) Add blocklist

=> https://www.reddit.com/r/oisd_blocklist/comments/dwxgld/dbloisdnl_internets_1_domain_blocklist/

1. Open the Pi-hole Admin Console (in your browser) and go to Settings > Blocklists
2. Where it says: Enter one URL per line to add new blocklists Enter: https://dbl.oisd.nl
3. Hit the Save and update button

(optional) Enable Conditional Forwarding

This is useful to display device names instead if their IPs, when not using Pi-Hole as DHCP server.

1. Open the Pi-hole Admin Console (in your browser) and go to Settings > DNS
2. In Advanced Settings, enable "Use Conditional Forwarding", and enter the IP of the DHCP server (usually the router) as well as the domain (usually local for apple devices):

• Local network: 192.168.8.0/24
• IP of your DHCP server: 192.168.8.1
• Local domain name: local

Test

Make sure it works by querying your local DNS IP, e.g.:

dig pi-hole.net @192.168.8.41

Misc

• See if this is useful? https://github.com/roenw/PiPass

dnscrypt-proxy.toml

##############################################
#                                            #
#        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 = ['cloudflare', 'cloudflare-ipv6']


## List of local addresses and ports to listen to. Can be IPv4 and/or IPv6.
## Example with both IPv4 and IPv6:
## listen_addresses = ['127.0.0.1:53', '[::1]:53']

listen_addresses = ['0.0.0.0:5300']


## 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 blocklist (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


## Add EDNS-client-subnet information to outgoing queries
##
## Multiple networks can be listed; they will be randomly chosen.
## These networks don't have to match your actual networks.

# edns_client_subnet = ["0.0.0.0/0", "2001:db8::/32"]


## Response for blocked queries. Options are `refused`, `hinfo` (default) or
## an IP response. To give an IP response, use the format `a:<IPv4>,aaaa:<IPv6>`.
## 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', 'p<n>', 'first' or 'random'
## Randomly choose 1 of the fastest 2, half, n, 1 or all live servers by latency.
## The response quality still depends on the server itself.

# 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.
## Default is `true` that makes 'p2' `lb_strategy` work well.

# 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, and, if you are using
## DoH, fallback resolvers should ideally be operated by a different entity than
## the DoH servers you will be using, especially if you have IPv6 enabled.
##
## 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 blocklists).
## 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 blocklists).

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



########################################
#        Captive portal handling       #
########################################

[captive_portals]

## A file that contains a set of names used by operating systems to
## check for connectivity and captive portals, along with hard-coded
## IP addresses to return.

# map_file = 'example-captive-portals.txt'



##################################
#        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://<listen_address><path>` (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)
  ## Can be set to /dev/stdout in order to log to the standard output.

  # 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 (blocklists)        #
######################################################

## Blocklists 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 blocklist files can be found at https://download.dnscrypt.info/blocklists/
## A script to build blocklists from public feeds can be found in the
## `utils/generate-domains-blocklists` directory of the dnscrypt-proxy source code.

[blocked_names]

  ## Path to the file of blocking rules (absolute, or relative to the same directory as the config file)

  # blocked_names_file = 'blocked-names.txt'


  ## Optional path to a file logging blocked queries

  # log_file = 'blocked-names.log'


  ## Optional log format: tsv or ltsv (default: tsv)

  # log_format = 'tsv'



###########################################################
#        Pattern-based IP blocking (IP blocklists)        #
###########################################################

## IP blocklists are made of one pattern per line. Example of valid patterns:
##
##   127.*
##   fe80:abcd:*
##   192.168.1.4

[blocked_ips]

  ## Path to the file of blocking rules (absolute, or relative to the same directory as the config file)

  # blocked_ips_file = 'blocked-ips.txt'


  ## Optional path to a file logging blocked queries

  # log_file = 'blocked-ips.log'


  ## Optional log format: tsv or ltsv (default: tsv)

  # log_format = 'tsv'



######################################################
#   Pattern-based allow lists (blocklists bypass)   #
######################################################

## Allowlists support the same patterns as blocklists
## If a name matches an allowlist 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.

[allowed_names]

  ## Path to the file of allow list rules (absolute, or relative to the same directory as the config file)

  # allowed_names_file = 'allowed-names.txt'


  ## Optional path to a file logging allowed queries

  # log_file = 'allowed-names.log'


  ## Optional log format: tsv or ltsv (default: tsv)

  # log_format = 'tsv'



#########################################################
#   Pattern-based allowed IPs lists (blocklists bypass) #
#########################################################

## Allowed IP lists support the same patterns as IP blocklists
## If an IP response matches an allow ip entry, the corresponding session
## will bypass IP filters.
##
## Time-based rules are also supported to make some websites only accessible at specific times of the day.

[allowed_ips]

  ## Path to the file of allowed ip rules (absolute, or relative to the same directory as the config file)

  # allowed_ips_file = 'allowed-ips.txt'


  ## Optional path to a file logging allowed queries

  # log_file = 'allowed-ips.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 blocked_names file 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 blocklist 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.
## Cache freshness is checked every 24 hours, so values for 'refresh_delay'
## of less than 24 hours will have no effect.
## A maximum delay of 168 hours (1 week) is imposed to ensure cache freshness.

[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/v3/public-resolvers.md', 'https://download.dnscrypt.info/resolvers-list/v3/public-resolvers.md', 'https://ipv6.download.dnscrypt.info/resolvers-list/v3/public-resolvers.md', 'https://download.dnscrypt.net/resolvers-list/v3/public-resolvers.md']
  cache_file = 'public-resolvers.md'
  minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
  refresh_delay = 72
  prefix = ''

  ## Anonymized DNS relays

  [sources.'relays']
  urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/relays.md', 'https://download.dnscrypt.info/resolvers-list/v3/relays.md', 'https://ipv6.download.dnscrypt.info/resolvers-list/v3/relays.md', 'https://download.dnscrypt.net/resolvers-list/v3/relays.md']
  cache_file = '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/v3/parental-control.md', 'https://download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://ipv6.download.dnscrypt.info/resolvers-list/v3/parental-control.md', 'https://download.dnscrypt.net/resolvers-list/v3/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.
#
# Older versions of the `dnsdist` server software had a bug with queries larger
# than 1500 bytes. This is fixed since `dnsdist` version 1.5.0, but
# some server may still run an outdated version.
#
# 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', 'cleanbrowsing-adult', 'cleanbrowsing-adult-ipv6', 'cleanbrowsing-family', 'cleanbrowsing-family-ipv6', 'cleanbrowsing-security', 'cleanbrowsing-security-ipv6']



#################################################################
#        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) 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, for all servers:
## { server_name='*', via=['anon-example-1', 'anon-example-2'] }
##
## If a route is ["*"], the proxy automatically picks a relay on a distinct network.
## { server_name='*', via=['*'] } is also an option, but is likely to be suboptimal.
##
## Manual selection is always recommended over automatic selection, so that you can
## select (relay,server) pairs that work well and fit your own criteria (close by or
## in different countries, operated by different entities, on distinct ISPs...)

# 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


# If public server certificates for a non-conformant server cannot be
# retrieved via a relay, try getting them directly. Actual queries
# will then always go through relays.

# direct_cert_fallback = 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'

docker-compose.yml

version: "3"

# Manually create a network so we can use static IPs on the backend
networks:
  pihole_net:
    driver: bridge
    ipam:
      config:
        - subnet: 10.0.1.0/24

# More info at https://github.com/pi-hole/docker-pi-hole/ and https://docs.pi-hole.net/
services:
  pihole:
    container_name: pihole
    image: pihole/pihole:latest
    restart: unless-stopped
    ports:
      - "53:53/tcp"
      - "53:53/udp"
      - "80:80/tcp"
      - "443:443/tcp"
      # DHCP
      # - "67:67/udp"
    environment:
      # Change this to the IP of the RPi
      ServerIP: '192.168.8.41'
      TZ: 'Europe/Paris'
      # WEBPASSWORD: 'set a secure password here or it will be random'
      # Internal IP of the dnscrypt container
      PIHOLE_DNS_: "10.0.1.2#5300"
      # Enable DNS conditional forwarding for device name resolution
      REV_SERVER: "true"
      REV_SERVER_DOMAIN: "local"
      REV_SERVER_TARGET: "192.168.8.1"
      REV_SERVER_CIDR: "192.168.8.0/24"
    # Volumes store your data between container upgrades
    volumes:
      - './etc-pihole/:/etc/pihole/'
      - './etc-dnsmasq.d/:/etc/dnsmasq.d/'
    # Join the internal network so Pi-hole can talk to dnscrypt
    networks:
      pihole_net:
        ipv4_address: 10.0.1.3
    dns:
      - 127.0.0.1
      - 1.1.1.1
    # Recommended but not required (DHCP needs NET_ADMIN)
    # https://github.com/pi-hole/docker-pi-hole#note-on-capabilities
    # cap_add:
      # - NET_ADMIN
    # Starts dnscrypt before Pi-hole
    depends_on:
      - dnscrypt

  dnscrypt:
    container_name: dnscrypt-proxy
    image: klutchell/dnscrypt-proxy:latest
    # Restart on crashes and on reboots
    restart: unless-stopped
    expose:
      - "5300/udp"
      - "5300/tcp"
    environment:
      TZ: 'Europe/Paris'
    volumes:
      - './etc-dnscrypt-proxy:/config'
    # Attach cloudflared only to the private network
    networks:
      pihole_net:
        ipv4_address: 10.0.1.2
    dns:
      - 127.0.0.1
      - 1.1.1.1