Merge pull request #4318 from pi-hole/release/v5.4

Pi-hole core v5.4
Merge pull request #4229 from MichaIng/patch-3
2021-09-11 22:17:43 +01:00 · 2021-09-11 21:37:14 +01:00 · 2021-09-11 21:36:08 +01:00 · 2021-09-11 21:35:11 +01:00 · 2021-09-11 22:20:00 +02:00 · 2021-09-11 20:44:46 +01:00
37 changed files with 544 additions and 599 deletions
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
    runs-on: ubuntu-latest
    strategy:
      matrix:
-        distro: [debian_9, debian_10, ubuntu_16, ubuntu_18, ubuntu_20, centos_7, centos_8, fedora_32, fedora_33]
+        distro: [debian_9, debian_10, debian_11, ubuntu_16, ubuntu_18, ubuntu_20, ubuntu_21, centos_7, centos_8, fedora_32, fedora_33]
    env:
      DISTRO: ${{matrix.distro}}
    steps:
--- a/advanced/06-rfc6761.conf
+++ b/advanced/06-rfc6761.conf
@@ -0,0 +1,41 @@
+# Pi-hole: A black hole for Internet advertisements
+# (c) 2021 Pi-hole, LLC (https://pi-hole.net)
+# Network-wide ad blocking via your own hardware.
+#
+# RFC 6761 config file for Pi-hole
+#
+# This file is copyright under the latest version of the EUPL.
+# Please see LICENSE file for your rights under this license.
+
+###############################################################################
+#      FILE AUTOMATICALLY POPULATED BY PI-HOLE INSTALL/UPDATE PROCEDURE.      #
+# ANY CHANGES MADE TO THIS FILE AFTER INSTALL WILL BE LOST ON THE NEXT UPDATE #
+#                                                                             #
+#             CHANGES SHOULD BE MADE IN A SEPARATE CONFIG FILE                #
+#                    WITHIN /etc/dnsmasq.d/yourname.conf                      #
+###############################################################################
+
+# RFC 6761: Caching DNS servers SHOULD recognize
+#     test, localhost, invalid
+# names as special and SHOULD NOT attempt to look up NS records for them, or
+# otherwise query authoritative DNS servers in an attempt to resolve these
+# names.
+server=/test/
+server=/localhost/
+server=/invalid/
+
+# The same RFC requests something similar for
+#     16.172.in-addr.arpa.  22.172.in-addr.arpa.  27.172.in-addr.arpa.
+#     17.172.in-addr.arpa.  30.172.in-addr.arpa.  28.172.in-addr.arpa.
+#     18.172.in-addr.arpa.  23.172.in-addr.arpa.  29.172.in-addr.arpa.
+#     19.172.in-addr.arpa.  24.172.in-addr.arpa.  31.172.in-addr.arpa.
+#     20.172.in-addr.arpa.  25.172.in-addr.arpa.  168.192.in-addr.arpa.
+# Pi-hole implements this via the dnsmasq option "bogus-priv" (see
+# 01-pihole.conf) because this also covers IPv6.
+
+# OpenWRT furthermore blocks    bind, local, onion    domains
+# see https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob_plain;f=package/network/services/dnsmasq/files/rfc6761.conf;hb=HEAD
+# and https://www.iana.org/assignments/special-use-domain-names/special-use-domain-names.xhtml
+# We do not include the ".local" rule ourselves, see https://github.com/pi-hole/pi-hole/pull/4282#discussion_r689112972
+server=/bind/
+server=/onion/
--- a/advanced/Scripts/chronometer.sh
+++ b/advanced/Scripts/chronometer.sh
@@ -498,10 +498,6 @@ chronoFunc() {
        printFunc " RAM usage: " "$ram_perc%" "$ram_info"
        printFunc " HDD usage: " "$disk_perc" "$disk_info"

-        if [[ "$scr_lines" -gt 17 ]] && [[ "$chrono_width" != "small" ]]; then
-            printFunc "  LAN addr: " "${IPV4_ADDRESS/\/*/}" "$lan_info"
-        fi
-
        if [[ "$DHCP_ACTIVE" == "true" ]]; then
            printFunc "DHCP usage: " "$ph_dhcp_percent%" "$dhcp_info"
        fi
--- a/advanced/Scripts/piholeCheckout.sh
+++ b/advanced/Scripts/piholeCheckout.sh
@@ -166,12 +166,15 @@ checkout() {
        checkout_pull_branch "${webInterfaceDir}" "${2}"
    elif [[ "${1}" == "ftl" ]] ; then
        local path
+        local oldbranch
        path="${2}/${binary}"
+        oldbranch="$(pihole-FTL -b)"

        if check_download_exists "$path"; then
            echo "  ${TICK} Branch ${2} exists"
            echo "${2}" > /etc/pihole/ftlbranch
            chmod 644 /etc/pihole/ftlbranch
+            echo -e "  ${INFO} Switching to branch: \"${2}\" from \"${oldbranch}\""
            FTLinstall "${binary}"
            restart_service pihole-FTL
            enable_service pihole-FTL
--- a/advanced/Scripts/piholeDebug.sh
+++ b/advanced/Scripts/piholeDebug.sh
@@ -56,11 +56,6 @@ FAQ_BAD_ADDRESS="${COL_CYAN}https://discourse.pi-hole.net/t/why-do-i-see-bad-add

 # Other URLs we may use
 FORUMS_URL="${COL_CYAN}https://discourse.pi-hole.net${COL_NC}"
-TRICORDER_CONTEST="${COL_CYAN}https://pi-hole.net/2016/11/07/crack-our-medical-tricorder-win-a-raspberry-pi-3/${COL_NC}"
-
-# Port numbers used for uploading the debug log
-TRICORDER_NC_PORT_NUMBER=9999
-TRICORDER_SSL_PORT_NUMBER=9998

 # Directories required by Pi-hole
 # https://discourse.pi-hole.net/t/what-files-does-pi-hole-use/1684
@@ -78,15 +73,12 @@ HTML_DIRECTORY="/var/www/html"
 WEB_GIT_DIRECTORY="${HTML_DIRECTORY}/admin"
 #BLOCK_PAGE_DIRECTORY="${HTML_DIRECTORY}/pihole"
 SHM_DIRECTORY="/dev/shm"
+ETC="/etc"

 # Files required by Pi-hole
 # https://discourse.pi-hole.net/t/what-files-does-pi-hole-use/1684
 PIHOLE_CRON_FILE="${CRON_D_DIRECTORY}/pihole"

-PIHOLE_DNS_CONFIG_FILE="${DNSMASQ_D_DIRECTORY}/01-pihole.conf"
-PIHOLE_DHCP_CONFIG_FILE="${DNSMASQ_D_DIRECTORY}/02-pihole-dhcp.conf"
-PIHOLE_WILDCARD_CONFIG_FILE="${DNSMASQ_D_DIRECTORY}/03-wildcard.conf"
-
 WEB_SERVER_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/lighttpd.conf"
 WEB_SERVER_CUSTOM_CONFIG_FILE="${WEB_SERVER_CONFIG_DIRECTORY}/external.conf"

@@ -141,6 +133,9 @@ PIHOLE_FTL_LOG="$(get_ftl_conf_value "LOGFILE" "${LOG_DIRECTORY}/pihole-FTL.log"
 PIHOLE_WEB_SERVER_ACCESS_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/access.log"
 PIHOLE_WEB_SERVER_ERROR_LOG_FILE="${WEB_SERVER_LOG_DIRECTORY}/error.log"

+RESOLVCONF="${ETC}/resolv.conf"
+DNSMASQ_CONF="${ETC}/dnsmasq.conf"
+
 # An array of operating system "pretty names" that we officially support
 # We can loop through the array at any time to see if it matches a value
 #SUPPORTED_OS=("Raspbian" "Ubuntu" "Fedora" "Debian" "CentOS")
@@ -165,9 +160,6 @@ PIHOLE_PROCESSES=( "lighttpd" "pihole-FTL" )

 # Store the required directories in an array so it can be parsed through
 REQUIRED_FILES=("${PIHOLE_CRON_FILE}"
-"${PIHOLE_DNS_CONFIG_FILE}"
-"${PIHOLE_DHCP_CONFIG_FILE}"
-"${PIHOLE_WILDCARD_CONFIG_FILE}"
 "${WEB_SERVER_CONFIG_FILE}"
 "${WEB_SERVER_CUSTOM_CONFIG_FILE}"
 "${PIHOLE_INSTALL_LOG_FILE}"
@@ -185,7 +177,9 @@ REQUIRED_FILES=("${PIHOLE_CRON_FILE}"
 "${PIHOLE_DEBUG_LOG}"
 "${PIHOLE_FTL_LOG}"
 "${PIHOLE_WEB_SERVER_ACCESS_LOG_FILE}"
-"${PIHOLE_WEB_SERVER_ERROR_LOG_FILE}")
+"${PIHOLE_WEB_SERVER_ERROR_LOG_FILE}"
+"${RESOLVCONF}"
+"${DNSMASQ_CONF}")

 DISCLAIMER="This process collects information from your Pi-hole, and optionally uploads it to a unique and random directory on tricorder.pi-hole.net.

@@ -235,6 +229,7 @@ copy_to_debug_log() {
 }

 initialize_debug() {
+    local system_uptime
    # Clear the screen so the debug log is readable
    clear
    show_disclaimer
@@ -242,6 +237,10 @@ initialize_debug() {
    log_write "${COL_PURPLE}*** [ INITIALIZING ]${COL_NC}"
    # Timestamp the start of the log
    log_write "${INFO} $(date "+%Y-%m-%d:%H:%M:%S") debug log has been initialized."
+    # Uptime of the system
+    # credits to https://stackoverflow.com/questions/28353409/bash-format-uptime-to-show-days-hours-minutes
+    system_uptime=$(uptime | awk -F'( |,|:)+' '{if ($7=="min") m=$6; else {if ($7~/^day/){if ($9=="min") {d=$6;m=$8} else {d=$6;h=$8;m=$9}} else {h=$6;m=$7}}} {print d+0,"days,",h+0,"hours,",m+0,"minutes"}')
+    log_write "${INFO} System has been running for ${system_uptime}"
 }

 # This is a function for visually displaying the current test that is being run.
@@ -410,12 +409,12 @@ os_check() {
    # This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
    # and determines whether or not the script is running on one of those systems
    local remote_os_domain valid_os valid_version detected_os detected_version cmdResult digReturnCode response
-    remote_os_domain="versions.pi-hole.net"
+    remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}

    detected_os=$(grep "\bID\b" /etc/os-release | cut -d '=' -f2 | tr -d '"')
    detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')

-    cmdResult="$(dig +short -t txt ${remote_os_domain} @ns1.pi-hole.net 2>&1; echo $?)"
+    cmdResult="$(dig +short -t txt "${remote_os_domain}" @ns1.pi-hole.net 2>&1; echo $?)"
    #Get the return code of the previous command (last line)
    digReturnCode="${cmdResult##*$'\n'}"

@@ -605,38 +604,6 @@ parse_locale() {
    parse_file "${pihole_locale}"
 }

-does_ip_match_setup_vars() {
-    # Check for IPv4 or 6
-    local protocol="${1}"
-    # IP address to check for
-    local ip_address="${2}"
-    # See what IP is in the setupVars.conf file
-    local setup_vars_ip
-    setup_vars_ip=$(< ${PIHOLE_SETUP_VARS_FILE} grep IPV"${protocol}"_ADDRESS | cut -d '=' -f2)
-    # If it's an IPv6 address
-    if [[ "${protocol}" == "6" ]]; then
-        # Strip off the / (CIDR notation)
-        if [[ "${ip_address%/*}" == "${setup_vars_ip%/*}" ]]; then
-            # if it matches, show it in green
-            log_write "   ${COL_GREEN}${ip_address%/*}${COL_NC} matches the IP found in ${PIHOLE_SETUP_VARS_FILE}"
-        else
-            # otherwise show it in red with an FAQ URL
-            log_write "   ${COL_RED}${ip_address%/*}${COL_NC} does not match the IP found in ${PIHOLE_SETUP_VARS_FILE} (${FAQ_ULA})"
-        fi
-
-    else
-        # if the protocol isn't 6, it's 4 so no need to strip the CIDR notation
-        # since it exists in the setupVars.conf that way
-        if [[ "${ip_address}" == "${setup_vars_ip}" ]]; then
-            # show in green if it matches
-            log_write "   ${COL_GREEN}${ip_address}${COL_NC} matches the IP found in ${PIHOLE_SETUP_VARS_FILE}"
-        else
-            # otherwise show it in red
-            log_write "   ${COL_RED}${ip_address}${COL_NC} does not match the IP found in ${PIHOLE_SETUP_VARS_FILE} (${FAQ_ULA})"
-        fi
-    fi
-}
-
 detect_ip_addresses() {
    # First argument should be a 4 or a 6
    local protocol=${1}
@@ -653,8 +620,7 @@ detect_ip_addresses() {
        log_write "${TICK} IPv${protocol} address(es) bound to the ${PIHOLE_INTERFACE} interface:"
        # Since there may be more than one IP address, store them in an array
        for i in "${!ip_addr_list[@]}"; do
-            # For each one in the list, print it out
-            does_ip_match_setup_vars "${protocol}" "${ip_addr_list[$i]}"
+            log_write "    ${ip_addr_list[$i]}"
        done
        # Print a blank line just for formatting
        log_write ""
@@ -663,13 +629,6 @@ detect_ip_addresses() {
        log_write "${CROSS} ${COL_RED}No IPv${protocol} address(es) found on the ${PIHOLE_INTERFACE}${COL_NC} interface.\\n"
        return 1
    fi
-    # If the protocol is v6
-    if [[ "${protocol}" == "6" ]]; then
-        # let the user know that as long as there is one green address, things should be ok
-        log_write "   ^ Please note that you may have more than one IP address listed."
-        log_write "   As long as one of them is green, and it matches what is in ${PIHOLE_SETUP_VARS_FILE}, there is no need for concern.\\n"
-        log_write "   The link to the FAQ is for an issue that sometimes occurs when the IPv6 address changes, which is why we check for it.\\n"
-    fi
 }

 ping_ipv4_or_ipv6() {
@@ -859,13 +818,13 @@ dig_at() {

    # Store the arguments as variables with names
    local protocol="${1}"
-    local IP="${2}"
    echo_current_diagnostic "Name resolution (IPv${protocol}) using a random blocked domain and a known ad-serving domain"
    # Set more local variables
    # We need to test name resolution locally, via Pi-hole, and via a public resolver
    local local_dig
-    local pihole_dig
    local remote_dig
+    local interfaces
+    local addresses
    # Use a static domain that we know has IPv4 and IPv6 to avoid false positives
    # Sometimes the randomly chosen domains don't use IPv6, or something else is wrong with them
    local remote_url="doubleclick.com"
@@ -874,15 +833,15 @@ dig_at() {
    if [[ ${protocol} == "6" ]]; then
        # Set the IPv6 variables and record type
        local local_address="::1"
-        local pihole_address="${IP}"
        local remote_address="2001:4860:4860::8888"
+        local sed_selector="inet6"
        local record_type="AAAA"
    # Otherwise, it should be 4
    else
        # so use the IPv4 values
        local local_address="127.0.0.1"
-        local pihole_address="${IP}"
        local remote_address="8.8.8.8"
+        local sed_selector="inet"
        local record_type="A"
    fi

@@ -892,32 +851,55 @@ dig_at() {
    local random_url
    random_url=$(sqlite3 "${PIHOLE_GRAVITY_DB_FILE}" "SELECT domain FROM vw_gravity ORDER BY RANDOM() LIMIT 1")

-    # First, do a dig on localhost to see if Pi-hole can use itself to block a domain
-    if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @${local_address} +short "${record_type}"); then
-        # If it can, show success
-        log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} via ${COL_CYAN}localhost$COL_NC (${local_address})"
-    else
-        # Otherwise, show a failure
-        log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} via ${COL_RED}localhost${COL_NC} (${local_address})"
-    fi
-
    # Next we need to check if Pi-hole can resolve a domain when the query is sent to it's IP address
    # This better emulates how clients will interact with Pi-hole as opposed to above where Pi-hole is
    # just asing itself locally
-    # The default timeouts and tries are reduced in case the DNS server isn't working, so the user isn't waiting for too long
+    # The default timeouts and tries are reduced in case the DNS server isn't working, so the user isn't
+    # waiting for too long
+    #
+    # Turn off history expansion such that the "!" in the sed command cannot do silly things
+    set +H
+    # Get interfaces
+    # sed logic breakdown:
+    #     / master /d;
+    #          Removes all interfaces that are slaves of others (e.g. virtual docker interfaces)
+    #     /UP/!d;
+    #          Removes all interfaces which are not UP
+    #     s/^[0-9]*: //g;
+    #          Removes interface index
+    #     s/: <.*//g;
+    #          Removes everything after the interface name
+    interfaces="$(ip link show | sed "/ master /d;/UP/!d;s/^[0-9]*: //g;s/: <.*//g;")"

-    # If Pi-hole can dig itself from it's IP (not the loopback address)
-    if pihole_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @"${pihole_address}" +short "${record_type}"); then
-        # show a success
-        log_write "${TICK} ${random_url} ${COL_GREEN}is ${pihole_dig}${COL_NC} via ${COL_CYAN}Pi-hole${COL_NC} (${pihole_address})"
+    while IFS= read -r iface ; do
+        # Get addresses of current interface
+        # sed logic breakdown:
+        #     /inet(|6) /!d;
+        #          Removes all lines from ip a that do not contain either "inet " or "inet6 "
+        #     s/^.*inet(|6) //g;
+        #          Removes all leading whitespace as well as the "inet " or "inet6 " string
+        #     s/\/.*$//g;
+        #          Removes CIDR and everything thereafter (e.g., scope properties)
+        addresses="$(ip address show dev "${iface}" | sed "/${sed_selector} /!d;s/^.*${sed_selector} //g;s/\/.*$//g;")"
+        if [ -n "${addresses}" ]; then
+          while IFS= read -r local_address ; do
+              # Check if Pi-hole can use itself to block a domain
+              if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @"${local_address}" +short "${record_type}"); then
+                  # If it can, show success
+                  log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} on ${COL_CYAN}${iface}${COL_NC} (${COL_CYAN}${local_address}${COL_NC})"
              else
                  # Otherwise, show a failure
-        log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} via ${COL_RED}Pi-hole${COL_NC} (${pihole_address})"
+                  log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} on ${COL_RED}${iface}${COL_NC} (${COL_RED}${local_address}${COL_NC})"
              fi
+          done <<< "${addresses}"
+        else
+          log_write "${TICK} No IPv${protocol} address available on ${COL_CYAN}${iface}${COL_NC}"
+        fi
+    done <<< "${interfaces}"

    # Finally, we need to make sure legitimate queries can out to the Internet using an external, public DNS server
    # We are using the static remote_url here instead of a random one because we know it works with IPv4 and IPv6
-    if remote_dig=$(dig +tries=1 +time=2 -"${protocol}" "${remote_url}" @${remote_address} +short "${record_type}" | head -n1); then
+    if remote_dig=$(dig +tries=1 +time=2 -"${protocol}" "${remote_url}" @"${remote_address}" +short "${record_type}" | head -n1); then
        # If successful, the real IP of the domain will be returned instead of Pi-hole's IP
        log_write "${TICK} ${remote_url} ${COL_GREEN}is ${remote_dig}${COL_NC} via ${COL_CYAN}a remote, public DNS server${COL_NC} (${remote_address})"
    else
@@ -1032,7 +1014,7 @@ parse_file() {
    local file_lines
    # For each line in the file,
    for file_lines in "${file_info[@]}"; do
-        if [[ ! -z "${file_lines}" ]]; then
+        if [[ -n "${file_lines}" ]]; then
            # don't include the Web password hash
            [[ "${file_lines}" =~ ^\#.*$  || ! "${file_lines}" || "${file_lines}" == "WEBPASSWORD="* ]] && continue
            # otherwise, display the lines of the file
@@ -1046,12 +1028,8 @@ parse_file() {
 check_name_resolution() {
    # Check name resolution from localhost, Pi-hole's IP, and Google's name severs
    # using the function we created earlier
-    dig_at 4 "${IPV4_ADDRESS%/*}"
-    # If IPv6 enabled,
-    if [[ "${IPV6_ADDRESS}" ]]; then
-        # check resolution
-        dig_at 6 "${IPV6_ADDRESS%/*}"
-    fi
+    dig_at 4
+    dig_at 6
 }

 # This function can check a directory exists
@@ -1094,13 +1072,17 @@ list_files_in_dir() {
            :
        elif [[ "${dir_to_parse}" == "${SHM_DIRECTORY}" ]]; then
            # SHM file - we do not want to see the content, but we want to see the files and their sizes
-            log_write "$(ls -ld "${dir_to_parse}"/"${each_file}")"
+            log_write "$(ls -lhd "${dir_to_parse}"/"${each_file}")"
+        elif [[ "${dir_to_parse}" == "${DNSMASQ_D_DIRECTORY}" ]]; then
+            # in case of the dnsmasq directory inlcuede all files in the debug output
+            log_write "\\n${COL_GREEN}$(ls -lhd "${dir_to_parse}"/"${each_file}")${COL_NC}"
+            make_array_from_file "${dir_to_parse}/${each_file}"
        else
            # Then, parse the file's content into an array so each line can be analyzed if need be
            for i in "${!REQUIRED_FILES[@]}"; do
                if [[ "${dir_to_parse}/${each_file}" == "${REQUIRED_FILES[$i]}" ]]; then
                    # display the filename
-                    log_write "\\n${COL_GREEN}$(ls -ld "${dir_to_parse}"/"${each_file}")${COL_NC}"
+                    log_write "\\n${COL_GREEN}$(ls -lhd "${dir_to_parse}"/"${each_file}")${COL_NC}"
                    # Check if the file we want to view has a limit (because sometimes we just need a little bit of info from the file, not the entire thing)
                    case "${dir_to_parse}/${each_file}" in
                        # If it's Web server error log, give the first and last 25 lines
@@ -1139,6 +1121,7 @@ show_content_of_pihole_files() {
    show_content_of_files_in_dir "${WEB_SERVER_LOG_DIRECTORY}"
    show_content_of_files_in_dir "${LOG_DIRECTORY}"
    show_content_of_files_in_dir "${SHM_DIRECTORY}"
+    show_content_of_files_in_dir "${ETC}"
 }

 head_tail_log() {
@@ -1239,11 +1222,11 @@ show_groups() {
 }

 show_adlists() {
-    show_db_entries "Adlists" "SELECT id,CASE enabled WHEN '0' THEN '   0' WHEN '1' THEN '      1' ELSE enabled END enabled,GROUP_CONCAT(adlist_by_group.group_id) group_ids,address,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM adlist LEFT JOIN adlist_by_group ON adlist.id = adlist_by_group.adlist_id GROUP BY id;" "4 7 12 100 19 19 50"
+    show_db_entries "Adlists" "SELECT id,CASE enabled WHEN '0' THEN '   0' WHEN '1' THEN '      1' ELSE enabled END enabled,GROUP_CONCAT(adlist_by_group.group_id) group_ids,address,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM adlist LEFT JOIN adlist_by_group ON adlist.id = adlist_by_group.adlist_id GROUP BY id;" "5 7 12 100 19 19 50"
 }

 show_domainlist() {
-    show_db_entries "Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)" "SELECT id,CASE type WHEN '0' THEN '0   ' WHEN '1' THEN ' 1  ' WHEN '2' THEN '  2 ' WHEN '3' THEN '   3' ELSE type END type,CASE enabled WHEN '0' THEN '   0' WHEN '1' THEN '      1' ELSE enabled END enabled,GROUP_CONCAT(domainlist_by_group.group_id) group_ids,domain,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM domainlist LEFT JOIN domainlist_by_group ON domainlist.id = domainlist_by_group.domainlist_id GROUP BY id;" "4 4 7 12 100 19 19 50"
+    show_db_entries "Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)" "SELECT id,CASE type WHEN '0' THEN '0   ' WHEN '1' THEN ' 1  ' WHEN '2' THEN '  2 ' WHEN '3' THEN '   3' ELSE type END type,CASE enabled WHEN '0' THEN '   0' WHEN '1' THEN '      1' ELSE enabled END enabled,GROUP_CONCAT(domainlist_by_group.group_id) group_ids,domain,datetime(date_added,'unixepoch','localtime') date_added,datetime(date_modified,'unixepoch','localtime') date_modified,comment FROM domainlist LEFT JOIN domainlist_by_group ON domainlist.id = domainlist_by_group.domainlist_id GROUP BY id;" "5 4 7 12 100 19 19 50"
 }

 show_clients() {
@@ -1281,39 +1264,29 @@ analyze_gravity_list() {
    IFS="$OLD_IFS"
 }

-analyze_pihole_log() {
-    echo_current_diagnostic "Pi-hole log"
-    local head_line
-    # Put the current Internal Field Separator into another variable so it can be restored later
-    OLD_IFS="$IFS"
-    # Get the lines that are in the file(s) and store them in an array for parsing later
-    IFS=$'\r\n'
-    local pihole_log_permissions
-    pihole_log_permissions=$(ls -ld "${PIHOLE_LOG}")
-    log_write "${COL_GREEN}${pihole_log_permissions}${COL_NC}"
-    local pihole_log_head=()
-    mapfile -t pihole_log_head < <(head -n 20 ${PIHOLE_LOG})
-    log_write "   ${COL_CYAN}-----head of $(basename ${PIHOLE_LOG})------${COL_NC}"
+obfuscated_pihole_log() {
+  local pihole_log=("$@")
+  local line
  local error_to_check_for
  local line_to_obfuscate
  local obfuscated_line
-    for head_line in "${pihole_log_head[@]}"; do
+  for line in "${pihole_log[@]}"; do
      # A common error in the pihole.log is when there is a non-hosts formatted file
      # that the DNS server is attempting to read.  Since it's not formatted
      # correctly, there will be an entry for "bad address at line n"
      # So we can check for that here and highlight it in red so the user can see it easily
-        error_to_check_for=$(echo "${head_line}" | grep 'bad address at')
+      error_to_check_for=$(echo "${line}" | grep 'bad address at')
      # Some users may not want to have the domains they visit sent to us
      # To that end, we check for lines in the log that would contain a domain name
-        line_to_obfuscate=$(echo "${head_line}" | grep ': query\|: forwarded\|: reply')
+      line_to_obfuscate=$(echo "${line}" | grep ': query\|: forwarded\|: reply')
      # If the variable contains a value, it found an error in the log
      if [[ -n ${error_to_check_for} ]]; then
          # So we can print it in red to make it visible to the user
-            log_write "   ${CROSS} ${COL_RED}${head_line}${COL_NC} (${FAQ_BAD_ADDRESS})"
+          log_write "   ${CROSS} ${COL_RED}${line}${COL_NC} (${FAQ_BAD_ADDRESS})"
      else
          # If the variable does not a value (the current default behavior), so do not obfuscate anything
          if [[ -z ${OBFUSCATE} ]]; then
-                log_write "   ${head_line}"
+              log_write "   ${line}"
          # Othwerise, a flag was passed to this command to obfuscate domains in the log
          else
              # So first check if there are domains in the log that should be obfuscated
@@ -1323,35 +1296,56 @@ analyze_pihole_log() {
                  obfuscated_line=$(echo "${line_to_obfuscate}" | awk -v placeholder="${OBFUSCATED_PLACEHOLDER}" '{sub($6,placeholder); print $0}')
                  log_write "   ${obfuscated_line}"
              else
-                    log_write "   ${head_line}"
+                  log_write "   ${line}"
              fi
          fi
      fi
  done
+}
+
+analyze_pihole_log() {
+  echo_current_diagnostic "Pi-hole log"
+  local pihole_log_head=()
+  local pihole_log_tail=()
+  local pihole_log_permissions
+  local logging_enabled
+
+  logging_enabled=$(grep -c "^log-queries" /etc/dnsmasq.d/01-pihole.conf)
+  if [[ "${logging_enabled}" == "0" ]]; then
+      # Inform user that logging has been disabled and pihole.log does not contain queries
+      log_write "${INFO} Query logging is disabled"
+      log_write ""
+  fi
+  # Put the current Internal Field Separator into another variable so it can be restored later
+  OLD_IFS="$IFS"
+  # Get the lines that are in the file(s) and store them in an array for parsing later
+  IFS=$'\r\n'
+  pihole_log_permissions=$(ls -ld "${PIHOLE_LOG}")
+  log_write "${COL_GREEN}${pihole_log_permissions}${COL_NC}"
+  mapfile -t pihole_log_head < <(head -n 20 ${PIHOLE_LOG})
+  log_write "   ${COL_CYAN}-----head of $(basename ${PIHOLE_LOG})------${COL_NC}"
+  obfuscated_pihole_log "${pihole_log_head[@]}"
+  log_write ""
+  mapfile -t pihole_log_tail < <(tail -n 20 ${PIHOLE_LOG})
+  log_write "   ${COL_CYAN}-----tail of $(basename ${PIHOLE_LOG})------${COL_NC}"
+  obfuscated_pihole_log "${pihole_log_tail[@]}"
  log_write ""
  # Set the IFS back to what it was
  IFS="$OLD_IFS"
 }

-tricorder_use_nc_or_curl() {
-    # Users can submit their debug logs using nc (unencrypted) or curl (encrypted) if available
-    # Check for curl first since encryption is a good thing
-    if command -v curl &> /dev/null; then
-        # If the command exists,
+curl_to_tricorder() {
+    # Users can submit their debug logs using curl (encrypted)
    log_write "    * Using ${COL_GREEN}curl${COL_NC} for transmission."
-        # transmit he log via TLS and store the token returned in a variable
-        tricorder_token=$(curl --silent --upload-file ${PIHOLE_DEBUG_LOG} https://tricorder.pi-hole.net:${TRICORDER_SSL_PORT_NUMBER})
-        if [ -z "${tricorder_token}" ]; then
-         # curl failed, fallback to nc
-         log_write "    * ${COL_GREEN}curl${COL_NC} failed, falling back to ${COL_YELLOW}netcat${COL_NC} for transmission."
-         tricorder_token=$(< ${PIHOLE_DEBUG_LOG} nc tricorder.pi-hole.net ${TRICORDER_NC_PORT_NUMBER})
+    # transmit the log via TLS and store the token returned in a variable
+    tricorder_token=$(curl --silent --fail --show-error --upload-file ${PIHOLE_DEBUG_LOG} https://tricorder.pi-hole.net 2>&1)
+    if [[ "${tricorder_token}" != "https://tricorder.pi-hole.net/"* ]]; then
+        log_write "    * ${COL_GREEN}curl${COL_NC} failed, contact Pi-hole support for assistance."
+        # Log curl error (if available)
+        if [ -n "${tricorder_token}" ]; then
+            log_write "    * Error message: ${COL_RED}${tricorder_token}${COL_NC}\\n"
+            tricorder_token=""
        fi
-    # Otherwise,
-    else
-        # use net cat
-        log_write "${INFO} Using ${COL_YELLOW}netcat${COL_NC} for transmission."
-        # Save the token returned by our server in a variable
-        tricorder_token=$(< ${PIHOLE_DEBUG_LOG} nc tricorder.pi-hole.net ${TRICORDER_NC_PORT_NUMBER})
    fi
 }

@@ -1370,14 +1364,13 @@ upload_to_tricorder() {

    # Provide information on what they should do with their token
    log_write "    * The debug log can be uploaded to tricorder.pi-hole.net for sharing with developers only."
-    log_write "    * For more information, see: ${TRICORDER_CONTEST}"
-    log_write "    * If available, we'll use openssl to upload the log, otherwise it will fall back to netcat."
+
    # If pihole -d is running automatically (usually through the dashboard)
    if [[ "${AUTOMATED}" ]]; then
        # let the user know
        log_write "${INFO} Debug script running in automated mode"
        # and then decide again which tool to use to submit it
-        tricorder_use_nc_or_curl
+        curl_to_tricorder
        # If we're not running in automated mode,
    else
        echo ""
@@ -1386,7 +1379,7 @@ upload_to_tricorder() {
        read -r -p "[?] Would you like to upload the log? [y/N] " response
        case ${response} in
            # If they say yes, run our function for uploading the log
-            [yY][eE][sS]|[yY]) tricorder_use_nc_or_curl;;
+            [yY][eE][sS]|[yY]) curl_to_tricorder;;
            # If they choose no, just exit out of the script
            *) log_write "    * Log will ${COL_GREEN}NOT${COL_NC} be uploaded to tricorder.\\n    * A local copy of the debug log can be found at: ${COL_CYAN}${PIHOLE_DEBUG_LOG}${COL_NC}\\n";exit;
        esac
@@ -1397,15 +1390,15 @@ upload_to_tricorder() {
        # Again, try to make this visually striking so the user realizes they need to do something with this information
        # Namely, provide the Pi-hole devs with the token
        log_write ""
-        log_write "${COL_PURPLE}***********************************${COL_NC}"
-        log_write "${COL_PURPLE}***********************************${COL_NC}"
+        log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
+        log_write "${COL_PURPLE}*****************************************************************${COL_NC}\\n"
        log_write "${TICK} Your debug token is: ${COL_GREEN}${tricorder_token}${COL_NC}"
-        log_write "${COL_PURPLE}***********************************${COL_NC}"
-        log_write "${COL_PURPLE}***********************************${COL_NC}"
+        log_write "${INFO}${COL_RED} Logs are deleted 48 hours after upload.${COL_NC}\\n"
+        log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
+        log_write "${COL_PURPLE}*****************************************************************${COL_NC}"
        log_write ""
-        log_write "   * Provide the token above to the Pi-hole team for assistance at"
-        log_write "   * ${FORUMS_URL}"
-        log_write "   * Your log will self-destruct on our server after ${COL_RED}48 hours${COL_NC}."
+        log_write "   * Provide the token above to the Pi-hole team for assistance at ${FORUMS_URL}"
+
    # If no token was generated
    else
        # Show an error and some help instructions
--- a/advanced/Scripts/piholeLogFlush.sh
+++ b/advanced/Scripts/piholeLogFlush.sh
@@ -11,6 +11,11 @@
 colfile="/opt/pihole/COL_TABLE"
 source ${colfile}

+# In case we're running at the same time as a system logrotate, use a
+# separate logrotate state file to prevent stepping on each other's
+# toes.
+STATEFILE="/var/lib/logrotate/pihole"
+
 # Determine database location
 # Obtain DBFILE=... setting from pihole-FTL.db
 # Constructed to return nothing when
@@ -32,7 +37,7 @@ if [[ "$@" == *"once"* ]]; then
    # Nightly logrotation
    if command -v /usr/sbin/logrotate >/dev/null; then
        # Logrotate once
-        /usr/sbin/logrotate --force /etc/pihole/logrotate
+        /usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate
    else
        # Copy pihole.log over to pihole.log.1
        # and empty out pihole.log
@@ -47,8 +52,8 @@ else
    # Manual flushing
    if command -v /usr/sbin/logrotate >/dev/null; then
        # Logrotate twice to move all data out of sight of FTL
-        /usr/sbin/logrotate --force /etc/pihole/logrotate; sleep 3
-        /usr/sbin/logrotate --force /etc/pihole/logrotate
+        /usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate; sleep 3
+        /usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate
    else
        # Flush both pihole.log and pihole.log.1 (if existing)
        echo " " > /var/log/pihole.log
--- a/advanced/Scripts/webpage.sh
+++ b/advanced/Scripts/webpage.sh
@@ -44,7 +44,8 @@ Options:
  -e, email           Set an administrative contact address for the Block Page
  -h, --help          Show this help dialog
  -i, interface       Specify dnsmasq's interface listening behavior
-  -l, privacylevel    Set privacy level (0 = lowest, 3 = highest)"
+  -l, privacylevel    Set privacy level (0 = lowest, 3 = highest)
+  -t, teleporter      Backup configuration as an archive"
    exit 0
 }

@@ -53,7 +54,7 @@ add_setting() {
 }

 delete_setting() {
-    sed -i "/${1}/d" "${setupVars}"
+    sed -i "/^${1}/d" "${setupVars}"
 }

 change_setting() {
@@ -66,7 +67,7 @@ addFTLsetting() {
 }

 deleteFTLsetting() {
-    sed -i "/${1}/d" "${FTLconf}"
+    sed -i "/^${1}/d" "${FTLconf}"
 }

 changeFTLsetting() {
@@ -83,7 +84,7 @@ add_dnsmasq_setting() {
 }

 delete_dnsmasq_setting() {
-    sed -i "/${1}/d" "${dnsmasqconfig}"
+    sed -i "/^${1}/d" "${dnsmasqconfig}"
 }

 SetTemperatureUnit() {
@@ -266,17 +267,22 @@ trust-anchor=.,20326,8,2,E06D44B80B8F1D39A95C0B0D7C65D08458E880409BBC68345710423
        delete_setting "CONDITIONAL_FORWARDING_IP"
    fi

+    delete_dnsmasq_setting "rev-server"
+
    if [[ "${REV_SERVER}" == true ]]; then
        add_dnsmasq_setting "rev-server=${REV_SERVER_CIDR},${REV_SERVER_TARGET}"
        if [ -n "${REV_SERVER_DOMAIN}" ]; then
+            # Forward local domain names to the CF target, too
            add_dnsmasq_setting "server=/${REV_SERVER_DOMAIN}/${REV_SERVER_TARGET}"
        fi
+
+        if [[ "${DNS_FQDN_REQUIRED}" != true ]]; then
+            # Forward unqualified names to the CF target only when the "never
+            # forward non-FQDN" option is unticked
+            add_dnsmasq_setting "server=//${REV_SERVER_TARGET}"
        fi

-    # Prevent Firefox from automatically switching over to DNS-over-HTTPS
-    # This follows https://support.mozilla.org/en-US/kb/configuring-networks-disable-dns-over-https
-    # (sourced 7th September 2019)
-    add_dnsmasq_setting "server=/use-application-dns.net/"
+    fi

    # We need to process DHCP settings here as well to account for possible
    # changes in the non-FQDN forwarding. This cannot be done in 01-pihole.conf
@@ -426,7 +432,7 @@ dhcp-leasefile=/etc/pihole/dhcp.leases
        echo "#quiet-dhcp6
 #enable-ra
 dhcp-option=option6:dns-server,[::]
-dhcp-range=::100,::1ff,constructor:${interface},ra-names,slaac,${leasetime}
+dhcp-range=::100,::1ff,constructor:${interface},ra-names,slaac,64,3600
 ra-param=*,0,0
 " >> "${dhcpconfig}"
    fi
@@ -716,7 +722,7 @@ RemoveCustomDNSAddress() {
    host="${args[3]}"

    if valid_ip "${ip}" || valid_ip6 "${ip}" ; then
-        sed -i "/${ip} ${host}/d" "${dnscustomfile}"
+        sed -i "/^${ip} ${host}$/d" "${dnscustomfile}"
    else
        echo -e "  ${CROSS} Invalid IP has been passed"
        exit 1
@@ -748,7 +754,7 @@ RemoveCustomCNAMERecord() {
    if [[ -n "${validDomain}" ]]; then
        validTarget="$(checkDomain "${target}")"
        if [[ -n "${validDomain}" ]]; then
-            sed -i "/cname=${validDomain},${validTarget}/d" "${dnscustomcnamefile}"
+            sed -i "/cname=${validDomain},${validTarget}$/d" "${dnscustomcnamefile}"
        else
            echo "  ${CROSS} Invalid Target Passed!"
            exit 1
--- a/advanced/Templates/pihole-FTL.service
+++ b/advanced/Templates/pihole-FTL.service
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 ### BEGIN INIT INFO
 # Provides:          pihole-FTL
 # Required-Start:    $remote_fs $syslog $network
@@ -9,11 +9,8 @@
 # Description:       Enable service provided by pihole-FTL daemon
 ### END INIT INFO

-FTLUSER=pihole
-PIDFILE=/run/pihole-FTL.pid
-
 is_running() {
-    pgrep -o "pihole-FTL" > /dev/null 2>&1
+  pgrep -xo "pihole-FTL" > /dev/null
 }


@@ -23,27 +20,18 @@ start() {
    echo "pihole-FTL is already running"
  else
    # Touch files to ensure they exist (create if non-existing, preserve if existing)
-    touch /var/log/pihole-FTL.log /var/log/pihole.log
-    touch /run/pihole-FTL.pid /run/pihole-FTL.port
-    touch /etc/pihole/dhcp.leases
-    mkdir -p /run/pihole
-    mkdir -p /var/log/pihole
-    chown pihole:pihole /run/pihole /var/log/pihole
-    # Remove possible leftovers from previous pihole-FTL processes
-    rm -f /dev/shm/FTL-* 2> /dev/null
-    rm /run/pihole/FTL.sock 2> /dev/null
+    mkdir -pm 0755 /run/pihole
+    touch /run/pihole-FTL.pid /run/pihole-FTL.port /var/log/pihole-FTL.log /var/log/pihole.log /etc/pihole/dhcp.leases
    # Ensure that permissions are set so that pihole-FTL can edit all necessary files
-    chown pihole:pihole /run/pihole-FTL.pid /run/pihole-FTL.port
-    chown pihole:pihole /etc/pihole /etc/pihole/dhcp.leases 2> /dev/null
-    chown pihole:pihole /var/log/pihole-FTL.log /var/log/pihole.log
-    chmod 0644 /var/log/pihole-FTL.log /run/pihole-FTL.pid /run/pihole-FTL.port /var/log/pihole.log
+    chown pihole:pihole /run/pihole-FTL.pid /run/pihole-FTL.port /var/log/pihole-FTL.log /var/log/pihole.log /etc/pihole/dhcp.leases /run/pihole /etc/pihole
+    chmod 0644 /run/pihole-FTL.pid /run/pihole-FTL.port /var/log/pihole-FTL.log /var/log/pihole.log /etc/pihole/dhcp.leases /etc/pihole/macvendor.db
    # Chown database files to the user FTL runs as. We ignore errors as the files may not (yet) exist
-    chown pihole:pihole /etc/pihole/pihole-FTL.db /etc/pihole/gravity.db 2> /dev/null
-    if setcap CAP_NET_BIND_SERVICE,CAP_NET_RAW,CAP_NET_ADMIN,CAP_SYS_NICE+eip "$(which pihole-FTL)"; then
-      su -s /bin/sh -c "/usr/bin/pihole-FTL" "$FTLUSER"
+    chown -f pihole:pihole /etc/pihole/pihole-FTL.db /etc/pihole/gravity.db /etc/pihole/macvendor.db
+    if setcap CAP_NET_BIND_SERVICE,CAP_NET_RAW,CAP_NET_ADMIN,CAP_SYS_NICE,CAP_IPC_LOCK,CAP_CHOWN+eip "/usr/bin/pihole-FTL"; then
+      su -s /bin/sh -c "/usr/bin/pihole-FTL" pihole
    else
      echo "Warning: Starting pihole-FTL as root because setting capabilities is not supported on this system"
-      pihole-FTL
+      /usr/bin/pihole-FTL
    fi
    echo
  fi
@@ -52,20 +40,20 @@ start() {
 # Stop the service
 stop() {
  if is_running; then
-    pkill -o pihole-FTL
-    for i in {1..5}; do
+    pkill -xo "pihole-FTL"
+    for i in 1 2 3 4 5; do
      if ! is_running; then
        break
      fi

-      echo -n "."
+      printf "."
      sleep 1
    done
    echo

    if is_running; then
      echo "Not stopped; may still be shutting down or shutdown may have failed, killing now"
-      pkill -o -9 pihole-FTL
+      pkill -xo -9 "pihole-FTL"
      exit 1
    else
      echo "Stopped"
@@ -73,6 +61,8 @@ stop() {
  else
    echo "Not running"
  fi
+  # Cleanup
+  rm -f /run/pihole/FTL.sock /dev/shm/FTL-*
  echo
 }

@@ -101,7 +91,7 @@ case "$1" in
        start
        ;;
  *)
-        echo $"Usage: $0 {start|stop|restart|reload|status}"
+        echo "Usage: $0 {start|stop|restart|reload|status}"
        exit 1
 esac

--- a/advanced/Templates/pihole.cron
+++ b/advanced/Templates/pihole.cron
@@ -26,7 +26,7 @@
 #          parameter "quiet": don't print messages
 00 00   * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole flush once quiet

-@reboot root /usr/sbin/logrotate /etc/pihole/logrotate
+@reboot root /usr/sbin/logrotate --state /var/lib/logrotate/pihole /etc/pihole/logrotate

 # Pi-hole: Grab local version and branch every 10 minutes
 */10 *  * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local
--- a/advanced/index.php
+++ b/advanced/index.php
@@ -73,12 +73,12 @@ if ($serverName === "pi.hole"
            <meta charset='utf-8'>
            $viewPort
            <title>● $serverName</title>
-            <link rel='stylesheet' href='pihole/blockingpage.css'>
-            <link rel='shortcut icon' href='admin/img/favicons/favicon.ico' type='image/x-icon'>
+            <link rel='stylesheet' href='/pihole/blockingpage.css'>
+            <link rel='shortcut icon' href='/admin/img/favicons/favicon.ico' type='image/x-icon'>
        </head>
        <body id='splashpage'>
            <div id="pihole_card">
-              <img src='admin/img/logo.svg' alt='Pi-hole logo' id="pihole_logo_splash" />
+              <img src='/admin/img/logo.svg' alt='Pi-hole logo' id="pihole_logo_splash" />
              <p>Pi-<strong>hole</strong>: Your black hole for Internet advertisements</p>
              <a href='/admin'>Did you mean to go to the admin panel?</a>
            </div>
--- a/advanced/lighttpd.conf.debian
+++ b/advanced/lighttpd.conf.debian
@@ -20,7 +20,6 @@ server.modules = (
    "mod_accesslog",
    "mod_auth",
    "mod_expire",
-    "mod_compress",
    "mod_redirect",
    "mod_setenv",
    "mod_rewrite"
@@ -41,26 +40,6 @@ index-file.names            = ( "index.php", "index.html", "index.lighttpd.html"
 url.access-deny             = ( "~", ".inc", ".md", ".yml", ".ini" )
 static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

-compress.cache-dir = "/var/cache/lighttpd/compress/"
-compress.filetype  = (
-    "application/json",
-    "application/vnd.ms-fontobject",
-    "application/xml",
-    "font/eot",
-    "font/opentype",
-    "font/otf",
-    "font/ttf",
-    "image/bmp",
-    "image/svg+xml",
-    "image/vnd.microsoft.icon",
-    "image/x-icon",
-    "text/css",
-    "text/html",
-    "text/javascript",
-    "text/plain",
-    "text/xml"
-)
-
 mimetype.assign = (
    ".ico"   => "image/x-icon",
    ".jpeg"  => "image/jpeg",
@@ -99,11 +78,6 @@ $HTTP["url"] =~ "^/admin/" {
        "X-Pi-hole" => "The Pi-hole Web interface is working!",
        "X-Frame-Options" => "DENY"
    )
-
-    $HTTP["url"] =~ "\.(eot|otf|tt[cf]|woff2?)$" {
-        # Allow Block Page access to local fonts
-        setenv.add-response-header = ( "Access-Control-Allow-Origin" => "*" )
-    }
 }

 # Block . files from being served, such as .git, .github, .gitignore
--- a/advanced/lighttpd.conf.fedora
+++ b/advanced/lighttpd.conf.fedora
@@ -21,7 +21,6 @@ server.modules = (
    "mod_expire",
    "mod_fastcgi",
    "mod_accesslog",
-    "mod_compress",
    "mod_redirect",
    "mod_setenv",
    "mod_rewrite"
@@ -42,26 +41,6 @@ index-file.names            = ( "index.php", "index.html", "index.lighttpd.html"
 url.access-deny             = ( "~", ".inc", ".md", ".yml", ".ini" )
 static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

-compress.cache-dir = "/var/cache/lighttpd/compress/"
-compress.filetype  = (
-    "application/json",
-    "application/vnd.ms-fontobject",
-    "application/xml",
-    "font/eot",
-    "font/opentype",
-    "font/otf",
-    "font/ttf",
-    "image/bmp",
-    "image/svg+xml",
-    "image/vnd.microsoft.icon",
-    "image/x-icon",
-    "text/css",
-    "text/html",
-    "text/javascript",
-    "text/plain",
-    "text/xml"
-)
-
 mimetype.assign = (
    ".ico"   => "image/x-icon",
    ".jpeg"  => "image/jpeg",
@@ -107,11 +86,6 @@ $HTTP["url"] =~ "^/admin/" {
        "X-Pi-hole" => "The Pi-hole Web interface is working!",
        "X-Frame-Options" => "DENY"
    )
-
-    $HTTP["url"] =~ "\.(eot|otf|tt[cf]|woff2?)$" {
-        # Allow Block Page access to local fonts
-        setenv.add-response-header = ( "Access-Control-Allow-Origin" => "*" )
-    }
 }

 # Block . files from being served, such as .git, .github, .gitignore
--- a/install/basic-install.sh
+++ b/install/basic-install.sh
@@ -94,24 +94,9 @@ if [ -z "${USER}" ]; then
  USER="$(id -un)"
 fi

-
-# Check if we are running on a real terminal and find the rows and columns
-# If there is no real terminal, we will default to 80x24
-if [ -t 0 ] ; then
-  screen_size=$(stty size)
-else
-  screen_size="24 80"
-fi
-# Determine terminal rows and columns by parsing screen_size
-printf -v rows '%d' "${screen_size%% *}"
-printf -v columns '%d' "${screen_size##* }"
-
-# Divide by two so the dialogs take up half of the screen, which looks nice.
-r=$(( rows / 2 ))
-c=$(( columns / 2 ))
-# Unless the screen is tiny
-r=$(( r < 20 ? 20 : r ))
-c=$(( c < 70 ? 70 : c ))
+# whiptail dialog dimensions: 20 rows and 70 chars width assures to fit on small screens and is known to hold all content.
+r=20
+c=70

 ######## Undocumented Flags. Shhh ########
 # These are undocumented flags; some of which we can use when repairing an installation
@@ -186,12 +171,12 @@ os_check() {
        # This function gets a list of supported OS versions from a TXT record at versions.pi-hole.net
        # and determines whether or not the script is running on one of those systems
        local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response
-        remote_os_domain="versions.pi-hole.net"
+        remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}

        detected_os=$(grep "\bID\b" /etc/os-release | cut -d '=' -f2 | tr -d '"')
        detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')

-        cmdResult="$(dig +short -t txt ${remote_os_domain} @ns1.pi-hole.net 2>&1; echo $?)"
+        cmdResult="$(dig +short -t txt "${remote_os_domain}" @ns1.pi-hole.net 2>&1; echo $?)"
        # Gets the return code of the previous command (last line)
        digReturnCode="${cmdResult##*$'\n'}"

@@ -276,7 +261,7 @@ os_check() {
 }

 # Compatibility
-distro_check() {
+package_manager_detect() {
 # If apt-get is installed, then we know it's part of the Debian family
 if is_command apt-get ; then
    # Set some global variables here
@@ -288,21 +273,6 @@ if is_command apt-get ; then
    PKG_INSTALL=("${PKG_MANAGER}" -qq --no-install-recommends install)
    # grep -c will return 1 if there are no matches. This is an acceptable condition, so we OR TRUE to prevent set -e exiting the script.
    PKG_COUNT="${PKG_MANAGER} -s -o Debug::NoLocking=true upgrade | grep -c ^Inst || true"
-    # Some distros vary slightly so these fixes for dependencies may apply
-    # on Ubuntu 18.04.1 LTS we need to add the universe repository to gain access to dhcpcd5
-    APT_SOURCES="/etc/apt/sources.list"
-    if awk 'BEGIN{a=1;b=0}/bionic main/{a=0}/bionic.*universe/{b=1}END{exit a + b}' ${APT_SOURCES}; then
-        if ! whiptail --defaultno --title "Dependencies Require Update to Allowed Repositories" --yesno "Would you like to enable 'universe' repository?\\n\\nThis repository is required by the following packages:\\n\\n- dhcpcd5" "${r}" "${c}"; then
-            printf "  %b Aborting installation: Dependencies could not be installed.\\n" "${CROSS}"
-            exit 1
-        else
-            printf "  %b Enabling universe package repository for Ubuntu Bionic\\n" "${INFO}"
-            cp -p ${APT_SOURCES} ${APT_SOURCES}.backup # Backup current repo list
-            printf "  %b Backed up current configuration to %s\\n" "${TICK}" "${APT_SOURCES}.backup"
-            add-apt-repository universe
-            printf "  %b Enabled %s\\n" "${TICK}" "'universe' repository"
-        fi
-    fi
    # Update package cache. This is required already here to assure apt-cache calls have package lists available.
    update_package_cache || exit 1
    # Debian 7 doesn't have iproute2 so check if it's available first
@@ -354,8 +324,10 @@ if is_command apt-get ; then
        printf "  %b Aborting installation: No SQLite PHP module was found in APT repository.\\n" "${CROSS}"
        exit 1
    fi
+    # Packages required to perfom the os_check (stored as an array)
+    OS_CHECK_DEPS=(grep dnsutils)
    # Packages required to run this install script (stored as an array)
-    INSTALLER_DEPS=(dhcpcd5 git "${iproute_pkg}" whiptail dnsutils)
+    INSTALLER_DEPS=(git "${iproute_pkg}" whiptail)
    # Packages required to run Pi-hole (stored as an array)
    PIHOLE_DEPS=(cron curl iputils-ping lsof netcat psmisc sudo unzip idn2 sqlite3 libcap2-bin dns-root-data libcap2)
    # Packages required for the Web admin interface (stored as an array)
@@ -400,7 +372,8 @@ elif is_command rpm ; then
    # These variable names match the ones in the Debian family. See above for an explanation of what they are for.
    PKG_INSTALL=("${PKG_MANAGER}" install -y)
    PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l"
-    INSTALLER_DEPS=(git iproute newt procps-ng which chkconfig bind-utils)
+    OS_CHECK_DEPS=(grep bind-utils)
+    INSTALLER_DEPS=(git iproute newt procps-ng which chkconfig)
    PIHOLE_DEPS=(cronie curl findutils nmap-ncat sudo unzip libidn2 psmisc sqlite libcap lsof)
    PIHOLE_WEB_DEPS=(lighttpd lighttpd-fastcgi php-common php-cli php-pdo php-xml php-json php-intl)
    LIGHTTPD_USER="lighttpd"
@@ -692,9 +665,17 @@ welcomeDialogs() {
    whiptail --msgbox --backtitle "Plea" --title "Free and open source" "\\n\\nThe Pi-hole is free, but powered by your donations:  https://pi-hole.net/donate/" "${r}" "${c}"

    # Explain the need for a static address
-    whiptail --msgbox --backtitle "Initiating network interface" --title "Static IP Needed" "\\n\\nThe Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly.
+    if whiptail --defaultno --backtitle "Initiating network interface" --title "Static IP Needed" --yesno "\\n\\nThe Pi-hole is a SERVER so it needs a STATIC IP ADDRESS to function properly.

-In the next section, you can choose to use your current network settings (DHCP) or to manually edit them." "${r}" "${c}"
+IMPORTANT: If you have not already done so, you must ensure that this device has a static IP. Either through DHCP reservation, or by manually assigning one. Depending on your operating system, there are many ways to achieve this.
+
+Choose yes to indicate that you have understood this message, and wish to continue" "${r}" "${c}"; then
+#Nothing to do, continue
+  echo
+else
+  printf "  %b Installer exited at static IP message.\\n" "${INFO}"
+  exit 1
+fi
 }

 # A function that lets the user pick an interface to use with Pi-hole
@@ -847,8 +828,11 @@ use4andor6() {
    if [[ "${useIPv4}" ]]; then
        # Run our function to get the information we need
        find_IPv4_information
+        if [[ -f "/etc/dhcpcd.conf" ]]; then
+            # configure networking via dhcpcd
            getStaticIPv4Settings
-        setStaticIPv4
+            setDHCPCD
+        fi
    fi
    # If IPv6 is to be used,
    if [[ "${useIPv6}" ]]; then
@@ -933,93 +917,6 @@ setDHCPCD() {
    fi
 }

-# Configure networking ifcfg-xxxx file found at /etc/sysconfig/network-scripts/
-# This function requires the full path of an ifcfg file passed as an argument
-setIFCFG() {
-    # Local, named variables
-    local IFCFG_FILE
-    local IPADDR
-    local CIDR
-    IFCFG_FILE=$1
-    printf -v IPADDR "%s" "${IPV4_ADDRESS%%/*}"
-    # Check if the desired IP is already set
-    if grep -Eq "${IPADDR}(\\b|\\/)" "${IFCFG_FILE}"; then
-        printf "  %b Static IP already configured\\n" "${INFO}"
-    else
-        # Otherwise, put the IP in variables without the CIDR notation
-        printf -v CIDR "%s" "${IPV4_ADDRESS##*/}"
-        # Backup existing interface configuration:
-        cp -p "${IFCFG_FILE}" "${IFCFG_FILE}".pihole.orig
-        # Build Interface configuration file using the GLOBAL variables we have
-        {
-        echo "# Configured via Pi-hole installer"
-        echo "DEVICE=$PIHOLE_INTERFACE"
-        echo "BOOTPROTO=none"
-        echo "ONBOOT=yes"
-        echo "IPADDR=$IPADDR"
-        echo "PREFIX=$CIDR"
-        echo "GATEWAY=$IPv4gw"
-        echo "DNS1=$PIHOLE_DNS_1"
-        echo "DNS2=$PIHOLE_DNS_2"
-        echo "USERCTL=no"
-        }> "${IFCFG_FILE}"
-        chmod 644 "${IFCFG_FILE}"
-        chown root:root "${IFCFG_FILE}"
-        # Use ip to immediately set the new address
-        ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
-        # If NetworkMangler command line interface exists and ready to mangle,
-        if is_command nmcli && nmcli general status &> /dev/null; then
-            # Tell NetworkManagler to read our new sysconfig file
-            nmcli con load "${IFCFG_FILE}" > /dev/null
-        fi
-        # Show a warning that the user may need to restart
-        printf "  %b Set IP address to %s\\n  You may need to restart after the install is complete\\n" "${TICK}" "${IPV4_ADDRESS%%/*}"
-    fi
-}
-
-setStaticIPv4() {
-    # Local, named variables
-    local IFCFG_FILE
-    local CONNECTION_NAME
-
-    # If a static interface is already configured, we are done.
-    if [[ -r "/etc/sysconfig/network/ifcfg-${PIHOLE_INTERFACE}" ]]; then
-        if grep -q '^BOOTPROTO=.static.' "/etc/sysconfig/network/ifcfg-${PIHOLE_INTERFACE}"; then
-            return 0
-        fi
-    fi
-    # For the Debian family, if dhcpcd.conf exists then we can just configure using DHCPD.
-    if [[ -f "/etc/dhcpcd.conf" ]]; then
-        setDHCPCD
-        return 0
-    fi
-    # If a DHCPCD config file was not found, check for an ifcfg config file based on the interface name
-    if [[ -f "/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}" ]];then
-        # If it exists, then we can configure using IFCFG
-        IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${PIHOLE_INTERFACE}
-        setIFCFG "${IFCFG_FILE}"
-        return 0
-    fi
-    # If an ifcfg config does not exists for the interface name, search for one based on the connection name via network manager
-    if is_command nmcli && nmcli general status &> /dev/null; then
-        CONNECTION_NAME=$(nmcli dev show "${PIHOLE_INTERFACE}" | grep 'GENERAL.CONNECTION' | cut -d: -f2 | sed 's/^System//' | xargs | tr ' ' '_')
-        IFCFG_FILE=/etc/sysconfig/network-scripts/ifcfg-${CONNECTION_NAME}
-        if [[ -f "${IFCFG_FILE}" ]];then
-            # If it exists,
-            setIFCFG "${IFCFG_FILE}"
-            return 0
-        else
-            printf "  %b Warning: sysconfig network script not found. Creating ${IFCFG_FILE}\\n" "${INFO}"
-            touch "${IFCFG_FILE}"
-            setIFCFG "${IFCFG_FILE}"
-            return 0
-        fi
-    fi
-    # If previous conditions failed, show an error and exit
-    printf "  %b Warning: Unable to locate configuration file to set static IPv4 address\\n" "${INFO}"
-    exit 1
-}
-
 # Check an IP address to see if it is a valid one
 valid_ip() {
    # Local, named variables
@@ -1335,8 +1232,10 @@ version_check_dnsmasq() {
    local dnsmasq_pihole_id_string="addn-hosts=/etc/pihole/gravity.list"
    local dnsmasq_pihole_id_string2="# Dnsmasq config for Pi-hole's FTLDNS"
    local dnsmasq_original_config="${PI_HOLE_LOCAL_REPO}/advanced/dnsmasq.conf.original"
-    local dnsmasq_pihole_01_snippet="${PI_HOLE_LOCAL_REPO}/advanced/01-pihole.conf"
-    local dnsmasq_pihole_01_location="/etc/dnsmasq.d/01-pihole.conf"
+    local dnsmasq_pihole_01_source="${PI_HOLE_LOCAL_REPO}/advanced/01-pihole.conf"
+    local dnsmasq_pihole_01_target="/etc/dnsmasq.d/01-pihole.conf"
+    local dnsmasq_rfc6761_06_source="${PI_HOLE_LOCAL_REPO}/advanced/06-rfc6761.conf"
+    local dnsmasq_rfc6761_06_target="/etc/dnsmasq.d/06-rfc6761.conf"

    # If the dnsmasq config file exists
    if [[ -f "${dnsmasq_conf}" ]]; then
@@ -1365,44 +1264,48 @@ version_check_dnsmasq() {
        printf "%b  %b No dnsmasq.conf found... restoring default dnsmasq.conf...\\n" "${OVER}"  "${TICK}"
    fi

-    printf "  %b Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf..." "${INFO}"
+    printf "  %b Installing %s..." "${INFO}" "${dnsmasq_pihole_01_target}"
    # Check to see if dnsmasq directory exists (it may not due to being a fresh install and dnsmasq no longer being a dependency)
    if [[ ! -d "/etc/dnsmasq.d"  ]];then
        install -d -m 755 "/etc/dnsmasq.d"
    fi
    # Copy the new Pi-hole DNS config file into the dnsmasq.d directory
-    install -D -m 644 -T "${dnsmasq_pihole_01_snippet}" "${dnsmasq_pihole_01_location}"
-    printf "%b  %b Copying 01-pihole.conf to /etc/dnsmasq.d/01-pihole.conf\\n" "${OVER}"  "${TICK}"
+    install -D -m 644 -T "${dnsmasq_pihole_01_source}" "${dnsmasq_pihole_01_target}"
+    printf "%b  %b Installed %s\n" "${OVER}"  "${TICK}" "${dnsmasq_pihole_01_target}"
    # Replace our placeholder values with the GLOBAL DNS variables that we populated earlier
    # First, swap in the interface to listen on,
-    sed -i "s/@INT@/$PIHOLE_INTERFACE/" "${dnsmasq_pihole_01_location}"
+    sed -i "s/@INT@/$PIHOLE_INTERFACE/" "${dnsmasq_pihole_01_target}"
    if [[ "${PIHOLE_DNS_1}" != "" ]]; then
        # then swap in the primary DNS server.
-        sed -i "s/@DNS1@/$PIHOLE_DNS_1/" "${dnsmasq_pihole_01_location}"
+        sed -i "s/@DNS1@/$PIHOLE_DNS_1/" "${dnsmasq_pihole_01_target}"
    else
        # Otherwise, remove the line which sets DNS1.
-        sed -i '/^server=@DNS1@/d' "${dnsmasq_pihole_01_location}"
+        sed -i '/^server=@DNS1@/d' "${dnsmasq_pihole_01_target}"
    fi
    # Ditto if DNS2 is not empty
    if [[ "${PIHOLE_DNS_2}" != "" ]]; then
-        sed -i "s/@DNS2@/$PIHOLE_DNS_2/" "${dnsmasq_pihole_01_location}"
+        sed -i "s/@DNS2@/$PIHOLE_DNS_2/" "${dnsmasq_pihole_01_target}"
    else
-        sed -i '/^server=@DNS2@/d' "${dnsmasq_pihole_01_location}"
+        sed -i '/^server=@DNS2@/d' "${dnsmasq_pihole_01_target}"
    fi

 	# Set the cache size
-	sed -i "s/@CACHE_SIZE@/$CACHE_SIZE/" ${dnsmasq_pihole_01_location}
+	sed -i "s/@CACHE_SIZE@/$CACHE_SIZE/" "${dnsmasq_pihole_01_target}"

    sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' "${dnsmasq_conf}"

    # If the user does not want to enable logging,
    if [[ "${QUERY_LOGGING}" == false ]] ; then
        # disable it by commenting out the directive in the DNS config file
-        sed -i 's/^log-queries/#log-queries/' "${dnsmasq_pihole_01_location}"
+        sed -i 's/^log-queries/#log-queries/' "${dnsmasq_pihole_01_target}"
    else
        # Otherwise, enable it by uncommenting the directive in the DNS config file
-        sed -i 's/^#log-queries/log-queries/' "${dnsmasq_pihole_01_location}"
+        sed -i 's/^#log-queries/log-queries/' "${dnsmasq_pihole_01_target}"
    fi
+
+    printf "  %b Installing %s..." "${INFO}" "${dnsmasq_rfc6761_06_source}"
+    install -D -m 644 -T "${dnsmasq_rfc6761_06_source}" "${dnsmasq_rfc6761_06_target}"
+    printf "%b  %b Installed %s\n" "${OVER}"  "${TICK}" "${dnsmasq_rfc6761_06_target}"
 }

 # Clean an existing installation to prepare for upgrade/reinstall
@@ -1666,7 +1569,7 @@ update_package_cache() {
    else
        # Otherwise, show an error and exit
        printf "%b  %b %s\\n" "${OVER}" "${CROSS}" "${str}"
-        printf "  %bError: Unable to update package cache. Please try \"%s\"%b" "${COL_LIGHT_RED}" "${UPDATE_PKG_CACHE}" "${COL_NC}"
+        printf "  %bError: Unable to update package cache. Please try \"%s\"%b" "${COL_LIGHT_RED}" "sudo ${UPDATE_PKG_CACHE}" "${COL_NC}"
        return 1
    fi
 }
@@ -1693,20 +1596,7 @@ notify_package_updates_available() {
    fi
 }

-# This counter is outside of install_dependent_packages so that it can count the number of times the function is called.
-counter=0
-
 install_dependent_packages() {
-    # Local, named variables should be used here, especially for an iterator
-    # Add one to the counter
-    counter=$((counter+1))
-    if [[ "${counter}" == 1 ]]; then
-        # On the first loop, print a special message
-        printf "  %b Installer Dependency checks...\\n" "${INFO}"
-    else
-        # On all subsequent loops, print a generic message.
-        printf "  %b Main Dependency checks...\\n" "${INFO}"
-    fi

    # Install packages passed in via argument array
    # No spinner - conflicts with set -e
@@ -1944,9 +1834,17 @@ finalExports() {
 # Install the logrotate script
 installLogrotate() {
    local str="Installing latest logrotate script"
+    local target=/etc/pihole/logrotate
+
    printf "\\n  %b %s..." "${INFO}" "${str}"
+    if [[ -f ${target} ]]; then
+        printf "\\n\\t%b Existing logrotate file found. No changes made.\\n" "${INFO}"
+        # Return value isn't that important, using 2 to indicate that it's not a fatal error but
+        # the function did not complete.
+        return 2
+    fi
    # Copy the file over from the local repo
-    install -D -m 644 -T ${PI_HOLE_LOCAL_REPO}/advanced/Templates/logrotate /etc/pihole/logrotate
+    install -D -m 644 -T "${PI_HOLE_LOCAL_REPO}"/advanced/Templates/logrotate ${target}
    # Different operating systems have different user / group
    # settings for logrotate that makes it impossible to create
    # a static logrotate file that will work with e.g.
@@ -1955,9 +1853,9 @@ installLogrotate() {
    # the local properties of the /var/log directory
    logusergroup="$(stat -c '%U %G' /var/log)"
    # If there is a usergroup for log rotation,
-    if [[ ! -z "${logusergroup}" ]]; then
+    if [[ -n "${logusergroup}" ]]; then
        # replace the line in the logrotate script with that usergroup.
-        sed -i "s/# su #/su ${logusergroup}/g;" /etc/pihole/logrotate
+        sed -i "s/# su #/su ${logusergroup}/g;" ${target}
    fi
    printf "%b  %b %s\\n" "${OVER}" "${TICK}" "${str}"
 }
@@ -2034,8 +1932,10 @@ installPihole() {
    fi
    # Install the cron file
    installCron
+
    # Install the logrotate file
-    installLogrotate
+    installLogrotate || true
+
    # Check if dnsmasq is present. If so, disable it and back up any possible
    # config file
    disable_dnsmasq
@@ -2120,7 +2020,7 @@ Your Admin Webpage login password is ${pwstring}"
 IPv4:	${IPV4_ADDRESS%/*}
 IPv6:	${IPV6_ADDRESS:-"Not Configured"}

-If you set a new IP address, you should restart the Pi.
+If you have not done so already, the above IP should be set to static.

 The install log is in /etc/pihole.

@@ -2141,7 +2041,7 @@ update_dialogs() {
        strAdd="You will be updated to the latest version."
    fi
    opt2a="Reconfigure"
-    opt2b="This will reset your Pi-hole and allow you to enter new settings."
+    opt2b="Resets Pi-hole and allows re-selecting settings."

    # Display the information to the user
    UpdateCmd=$(whiptail --title "Existing Install Detected!" --menu "\\n\\nWe have detected an existing install.\\n\\nPlease choose from the following options: \\n($strAdd)" "${r}" "${c}" 2 \
@@ -2326,8 +2226,6 @@ FTLinstall() {

            # Before stopping FTL, we download the macvendor database
            curl -sSL "https://ftl.pi-hole.net/macvendor.db" -o "${PI_HOLE_CONFIG_DIR}/macvendor.db" || true
-            chmod 644 "${PI_HOLE_CONFIG_DIR}/macvendor.db"
-            chown pihole:pihole "${PI_HOLE_CONFIG_DIR}/macvendor.db"

            # Stop pihole-FTL service if available
            stop_service pihole-FTL &> /dev/null
@@ -2632,8 +2530,25 @@ main() {
        fi
    fi

-    # Check for supported distribution
-    distro_check
+    # Check for supported package managers so that we may install dependencies
+    package_manager_detect
+
+    # Notify user of package availability
+    notify_package_updates_available
+
+    # Install packages necessary to perform os_check
+    printf "  %b Checking for / installing Required dependencies for OS Check...\\n" "${INFO}"
+    install_dependent_packages "${OS_CHECK_DEPS[@]}"
+
+    # Check that the installed OS is officially supported - display warning if not
+    os_check
+
+    # Install packages used by this installation script
+    printf "  %b Checking for / installing Required dependencies for this install script...\\n" "${INFO}"
+    install_dependent_packages "${INSTALLER_DEPS[@]}"
+
+    # Check if SELinux is Enforcing
+    checkSelinux

    # If the setup variable file exists,
    if [[ -f "${setupVars}" ]]; then
@@ -2650,19 +2565,6 @@ main() {
        fi
    fi

-    # Start the installer
-    # Notify user of package availability
-    notify_package_updates_available
-
-    # Install packages used by this installation script
-    install_dependent_packages "${INSTALLER_DEPS[@]}"
-
-    # Check that the installed OS is officially supported - display warning if not
-    os_check
-
-    # Check if SELinux is Enforcing
-    checkSelinux
-
    if [[ "${useUpdateVars}" == false ]]; then
        # Display welcome dialogs
        welcomeDialogs
@@ -2709,6 +2611,8 @@ main() {
        dep_install_list+=("${PIHOLE_WEB_DEPS[@]}")
    fi

+    # Install packages used by the actual software
+    printf "  %b Checking for / installing Required dependencies for Pi-hole software...\\n" "${INFO}"
    install_dependent_packages "${dep_install_list[@]}"
    unset dep_install_list

@@ -2813,7 +2717,7 @@ main() {
        printf "  %b You may now configure your devices to use the Pi-hole as their DNS server\\n" "${INFO}"
        [[ -n "${IPV4_ADDRESS%/*}" ]] && printf "  %b Pi-hole DNS (IPv4): %s\\n" "${INFO}" "${IPV4_ADDRESS%/*}"
        [[ -n "${IPV6_ADDRESS}" ]] && printf "  %b Pi-hole DNS (IPv6): %s\\n" "${INFO}" "${IPV6_ADDRESS}"
-        printf "  %b If you set a new IP address, please restart the server running the Pi-hole\\n" "${INFO}"
+        printf "  %b If you have not done so already, the above IP should be set to static.\\n" "${INFO}"
        INSTALL_TYPE="Installation"
    else
        INSTALL_TYPE="Update"
--- a/install/uninstall.sh
+++ b/install/uninstall.sh
@@ -42,8 +42,8 @@ source "${PI_HOLE_FILES_DIR}/automated install/basic-install.sh"
 # setupVars set in basic-install.sh
 source "${setupVars}"

-# distro_check() sourced from basic-install.sh
-distro_check
+# package_manager_detect() sourced from basic-install.sh
+package_manager_detect

 # Install packages used by the Pi-hole
 DEPS=("${INSTALLER_DEPS[@]}" "${PIHOLE_DEPS[@]}")
@@ -145,6 +145,7 @@ removeNoPurge() {

    ${SUDO} rm -f /etc/dnsmasq.d/adList.conf &> /dev/null
    ${SUDO} rm -f /etc/dnsmasq.d/01-pihole.conf &> /dev/null
+    ${SUDO} rm -f /etc/dnsmasq.d/06-rfc6761.conf &> /dev/null
    ${SUDO} rm -rf /var/log/*pihole* &> /dev/null
    ${SUDO} rm -rf /etc/pihole/ &> /dev/null
    ${SUDO} rm -rf /etc/.pihole/ &> /dev/null
@@ -206,11 +207,7 @@ removeNoPurge() {
 }

 ######### SCRIPT ###########
-if command -v vcgencmd &> /dev/null; then
-    echo -e "  ${INFO} All dependencies are safe to remove on Raspbian"
-else
 echo -e "  ${INFO} Be sure to confirm if any dependencies should not be removed"
-fi
 while true; do
    echo -e "  ${INFO} ${COL_YELLOW}The following dependencies may have been added by the Pi-hole install:"
    echo -n "    "
--- a/gravity.sh
+++ b/gravity.sh
@@ -47,16 +47,6 @@ domainsExtension="domains"
 setupVars="${piholeDir}/setupVars.conf"
 if [[ -f "${setupVars}" ]];then
  source "${setupVars}"
-
-  # Remove CIDR mask from IPv4/6 addresses
-  IPV4_ADDRESS="${IPV4_ADDRESS%/*}"
-  IPV6_ADDRESS="${IPV6_ADDRESS%/*}"
-
-  # Determine if IPv4/6 addresses exist
-  if [[ -z "${IPV4_ADDRESS}" ]] && [[ -z "${IPV6_ADDRESS}" ]]; then
-    echo -e "  ${COL_LIGHT_RED}No IP addresses found! Please run 'pihole -r' to reconfigure${COL_NC}"
-    exit 1
-  fi
 else
  echo -e "  ${COL_LIGHT_RED}Installation Failure: ${setupVars} does not exist! ${COL_NC}
  Please run 'pihole -r', and choose the 'reconfigure' option to fix."
@@ -73,6 +63,8 @@ fi
 # have changed
 gravityDBfile="${GRAVITYDB}"
 gravityTEMPfile="${GRAVITYDB}_temp"
+gravityDIR="$(dirname -- "${gravityDBfile}")"
+gravityOLDfile="${gravityDIR}/gravity_old.db"

 if [[ -z "${BLOCKINGMODE}" ]] ; then
  BLOCKINGMODE="NULL"
@@ -123,8 +115,19 @@ gravity_swap_databases() {
  fi
  echo -e "${OVER}  ${TICK} ${str}"

-  # Swap databases and remove old database
+  # Swap databases and remove or conditionally rename old database
+  # Number of available blocks on disk
+  availableBlocks=$(stat -f --format "%a" "${gravityDIR}")
+  # Number of blocks, used by gravity.db
+  gravityBlocks=$(stat --format "%b" ${gravityDBfile})
+  # Only keep the old database if available disk space is at least twice the size of the existing gravity.db.
+  # Better be safe than sorry...
+  if [ "${availableBlocks}" -gt "$(("${gravityBlocks}" * 2))" ] && [ -f "${gravityDBfile}" ]; then
+    echo -e "  ${TICK} The old database remains available."
+    mv "${gravityDBfile}" "${gravityOLDfile}"
+  else
    rm "${gravityDBfile}"
+  fi
  mv "${gravityTEMPfile}" "${gravityDBfile}"
 }

@@ -564,7 +567,7 @@ compareLists() {
 # Download specified URL and perform checks on HTTP status and file content
 gravity_DownloadBlocklistFromUrl() {
  local url="${1}" cmd_ext="${2}" agent="${3}" adlistID="${4}" saveLocation="${5}" target="${6}" compression="${7}"
-  local heisenbergCompensator="" patternBuffer str httpCode success=""
+  local heisenbergCompensator="" patternBuffer str httpCode success="" ip

  # Create temp file to store content on disk instead of RAM
  patternBuffer=$(mktemp -p "/tmp" --suffix=".phgpb")
@@ -582,7 +585,10 @@ gravity_DownloadBlocklistFromUrl() {
  blocked=false
  case $BLOCKINGMODE in
    "IP-NODATA-AAAA"|"IP")
-        if [[ $(dig "${domain}" +short | grep "${IPV4_ADDRESS}" -c) -ge 1 ]]; then
+        # Get IP address of this domain
+        ip="$(dig "${domain}" +short)"
+        # Check if this IP matches any IP of the system
+        if [[ -n "${ip}" && $(grep -Ec "inet(|6) ${ip}" <<< "$(ip a)") -gt 0 ]]; then
          blocked=true
        fi;;
    "NXDOMAIN")
@@ -785,43 +791,12 @@ gravity_ShowCount() {
  gravity_Table_Count "vw_regex_whitelist" "regex whitelist filters"
 }

-# Parse list of domains into hosts format
-gravity_ParseDomainsIntoHosts() {
-  awk -v ipv4="$IPV4_ADDRESS" -v ipv6="$IPV6_ADDRESS" '{
-    # Remove windows CR line endings
-    sub(/\r$/, "")
-    # Parse each line as "ipaddr domain"
-    if(ipv6 && ipv4) {
-      print ipv4" "$0"\n"ipv6" "$0
-    } else if(!ipv6) {
-      print ipv4" "$0
-    } else {
-      print ipv6" "$0
-    }
-  }' >> "${2}" < "${1}"
-}
-
 # Create "localhost" entries into hosts format
 gravity_generateLocalList() {
-  local hostname
-
-  if [[ -s "/etc/hostname" ]]; then
-    hostname=$(< "/etc/hostname")
-  elif command -v hostname &> /dev/null; then
-    hostname=$(hostname -f)
-  else
-    echo -e "  ${CROSS} Unable to determine fully qualified domain name of host"
-    return 0
-  fi
-
-  echo -e "${hostname}\\npi.hole" > "${localList}.tmp"
-
  # Empty $localList if it already exists, otherwise, create it
-  : > "${localList}"
+  echo "### Do not modify this file, it will be overwritten by pihole -g" > "${localList}"
  chmod 644 "${localList}"

-  gravity_ParseDomainsIntoHosts "${localList}.tmp" "${localList}"
-
  # Add additional LAN hosts provided by OpenVPN (if available)
  if [[ -f "${VPNList}" ]]; then
    awk -F, '{printf $2"\t"$1".vpn\n"}' "${VPNList}" >> "${localList}"
@@ -890,6 +865,11 @@ for var in "$@"; do
  esac
 done

+# Remove OLD (backup) gravity file, if it exists
+if [[ -f "${gravityOLDfile}" ]]; then
+  rm "${gravityOLDfile}"
+fi
+
 # Trap Ctrl-C
 gravity_Trap

--- a/manpages/pihole.8
+++ b/manpages/pihole.8
@@ -56,7 +56,7 @@ Available commands and options:

 \fB-w, whitelist\fR [options] [<domain1> <domain2 ...>]
 .br
-    Adds or removes specified domain or domains tho the Whitelist
+    Adds or removes specified domain or domains to the Whitelist
 .br

 \fB-b, blacklist\fR [options] [<domain1> <domain2 ...>]
--- a/48
+++ b/48
@@ -242,7 +242,7 @@ Time:
    echo "BLOCKING_ENABLED=true" >> "${setupVars}"
  fi

-  restartDNS reload
+  restartDNS reload-lists

  echo -e "${OVER}  ${TICK} ${str}"
 }
@@ -363,16 +363,13 @@ tailFunc() {
  fi
  echo -e "  ${INFO} Press Ctrl-C to exit"

-  # Retrieve IPv4/6 addresses
-  source /etc/pihole/setupVars.conf
-
  # Strip date from each line
  # Color blocklist/blacklist/wildcard entries as red
  # Color A/AAAA/DHCP strings as white
  # Color everything else as gray
-  tail -f /var/log/pihole.log | sed -E \
+  tail -f /var/log/pihole.log | grep --line-buffered "${1}" | sed -E \
    -e "s,($(date +'%b %d ')| dnsmasq\[[0-9]*\]),,g" \
-    -e "s,(.*(blacklisted |gravity blocked ).* is (0.0.0.0|::|NXDOMAIN|${IPV4_ADDRESS%/*}|${IPV6_ADDRESS:-NULL}).*),${COL_RED}&${COL_NC}," \
+    -e "s,(.*(blacklisted |gravity blocked ).*),${COL_RED}&${COL_NC}," \
    -e "s,.*(query\\[A|DHCP).*,${COL_NC}&${COL_NC}," \
    -e "s,.*,${COL_GRAY}&${COL_NC},"
  exit 0
@@ -402,34 +399,24 @@ Branches:
 }

 tricorderFunc() {
+  local tricorder_token
  if [[ ! -p "/dev/stdin" ]]; then
    echo -e "  ${INFO} Please do not call Tricorder directly"
    exit 1
  fi

-  if ! (echo > /dev/tcp/tricorder.pi-hole.net/9998) >/dev/null 2>&1; then
-    echo -e "  ${CROSS} Unable to connect to Pi-hole's Tricorder server"
+  tricorder_token=$(curl --silent --fail --show-error --upload-file "-" https://tricorder.pi-hole.net/upload < /dev/stdin 2>&1)
+  if [[ "${tricorder_token}" != "https://tricorder.pi-hole.net/"* ]]; then
+      echo -e "${CROSS} uploading failed, contact Pi-hole support for assistance."
+      # Log curl error (if available)
+      if [ -n "${tricorder_token}" ]; then
+          echo -e "${INFO} Error message: ${COL_RED}${tricorder_token}${COL_NC}\\n"
+          tricorder_token=""
+      fi
      exit 1
  fi
-
-  if command -v openssl &> /dev/null; then
-    openssl s_client -quiet -connect tricorder.pi-hole.net:9998 2> /dev/null < /dev/stdin
-    exit "$?"
-  else
-    echo -e "  ${INFO} ${COL_YELLOW}Security Notice${COL_NC}: ${COL_WHITE}openssl${COL_NC} is not installed
-       Your debug log will be transmitted unencrypted via plain-text
-       There is a possibility that this could be intercepted by a third party
-       If you wish to cancel, press Ctrl-C to exit within 10 seconds"
-    secs="10"
-    while [[ "$secs" -gt "0" ]]; do
-       echo -ne "."
-       sleep 1
-       : $((secs--))
-    done
-    echo " "
-    nc tricorder.pi-hole.net 9999 < /dev/stdin
-    exit "$?"
-  fi
+  echo "Upload successful, your token is: ${COL_GREEN}${tricorder_token}${COL_NC}"
+  exit 0
 }

 updateCheckFunc() {
@@ -456,7 +443,10 @@ Debugging Options:
                        Add '-a' to automatically upload the log to tricorder.pi-hole.net
  -f, flush           Flush the Pi-hole log
  -r, reconfigure     Reconfigure or Repair Pi-hole subsystems
-  -t, tail            View the live output of the Pi-hole log
+  -t, tail [arg]      View the live output of the Pi-hole log.
+                      Add an optional argument to filter the log
+                      (regular expressions are supported)
+

 Options:
  -a, admin           Web interface options
@@ -530,7 +520,7 @@ case "${1}" in
  "status"                      ) statusFunc "$2";;
  "restartdns"                  ) restartDNS "$2";;
  "-a" | "admin"                ) webpageFunc "$@";;
-  "-t" | "tail"                 ) tailFunc;;
+  "-t" | "tail"                 ) tailFunc "$2";;
  "checkout"                    ) piholeCheckoutFunc "$@";;
  "tricorder"                   ) tricorderFunc;;
  "updatechecker"               ) updateCheckFunc "$@";;
--- a/supportedos.txt
+++ b/supportedos.txt
@@ -1,5 +0,0 @@
-Raspbian=9,10
-Ubuntu=16,18,20
-Debian=9,10
-Fedora=32,33
-CentOS=7,8
--- a/test/_centos_7.Dockerfile
+++ b/test/_centos_7.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_centos_8.Dockerfile
+++ b/test/_centos_8.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_debian_10.Dockerfile
+++ b/test/_debian_10.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_debian_11.Dockerfile
+++ b/test/_debian_11.Dockerfile
@@ -0,0 +1,17 @@
+FROM buildpack-deps:bullseye-scm
+
+ENV GITDIR /etc/.pihole
+ENV SCRIPTDIR /opt/pihole
+
+RUN mkdir -p $GITDIR $SCRIPTDIR /etc/pihole
+ADD . $GITDIR
+RUN cp $GITDIR/advanced/Scripts/*.sh $GITDIR/gravity.sh $GITDIR/pihole $GITDIR/automated\ install/*.sh $SCRIPTDIR/
+ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$SCRIPTDIR
+
+RUN true && \
+    chmod +x $SCRIPTDIR/*
+
+ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net
+
+#sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_debian_9.Dockerfile
+++ b/test/_debian_9.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_fedora_32.Dockerfile
+++ b/test/_fedora_32.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_fedora_33.Dockerfile
+++ b/test/_fedora_33.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_ubuntu_16.Dockerfile
+++ b/test/_ubuntu_16.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_ubuntu_18.Dockerfile
+++ b/test/_ubuntu_18.Dockerfile
@@ -12,5 +12,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_ubuntu_20.Dockerfile
+++ b/test/_ubuntu_20.Dockerfile
@@ -13,5 +13,6 @@ RUN true && \
    chmod +x $SCRIPTDIR/*

 ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net

 #sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/_ubuntu_21.Dockerfile
+++ b/test/_ubuntu_21.Dockerfile
@@ -0,0 +1,18 @@
+FROM buildpack-deps:hirsute-scm
+
+ENV GITDIR /etc/.pihole
+ENV SCRIPTDIR /opt/pihole
+
+RUN mkdir -p $GITDIR $SCRIPTDIR /etc/pihole
+ADD . $GITDIR
+RUN cp $GITDIR/advanced/Scripts/*.sh $GITDIR/gravity.sh $GITDIR/pihole $GITDIR/automated\ install/*.sh $SCRIPTDIR/
+ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$SCRIPTDIR
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN true && \
+    chmod +x $SCRIPTDIR/*
+
+ENV PH_TEST true
+ENV OS_CHECK_DOMAIN_NAME dev-supportedos.pi-hole.net
+
+#sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -8,8 +8,6 @@ check_output = testinfra.get_backend(

 SETUPVARS = {
    'PIHOLE_INTERFACE': 'eth99',
-    'IPV4_ADDRESS': '1.1.1.1',
-    'IPV6_ADDRESS': 'FE80::240:D0FF:FE48:4672',
    'PIHOLE_DNS_1': '4.2.2.1',
    'PIHOLE_DNS_2': '4.2.2.2'
 }
--- a/test/test_automated_install.py
+++ b/test/test_automated_install.py
@@ -18,13 +18,13 @@ def test_supported_operating_system(Pihole):
    # break supported package managers to emulate an unsupported distribution
    Pihole.run('rm -rf /usr/bin/apt-get')
    Pihole.run('rm -rf /usr/bin/rpm')
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = cross_box + ' OS distribution not supported'
-    assert expected_stdout in distro_check.stdout
-    # assert distro_check.rc == 1
+    assert expected_stdout in package_manager_detect.stdout
+    # assert package_manager_detect.rc == 1


 def test_setupVars_are_sourced_to_global_scope(Pihole):
@@ -45,8 +45,6 @@ def test_setupVars_are_sourced_to_global_scope(Pihole):
        # Currently debug test function only
        echo "Outputting sourced variables"
        echo "PIHOLE_INTERFACE=${PIHOLE_INTERFACE}"
-        echo "IPV4_ADDRESS=${IPV4_ADDRESS}"
-        echo "IPV6_ADDRESS=${IPV6_ADDRESS}"
        echo "PIHOLE_DNS_1=${PIHOLE_DNS_1}"
        echo "PIHOLE_DNS_2=${PIHOLE_DNS_2}"
    }
@@ -137,7 +135,7 @@ def test_update_package_cache_success_no_errors(Pihole):
    '''
    updateCache = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    update_package_cache
    ''')
    expected_stdout = tick_box + ' Update local cache of available packages'
@@ -152,7 +150,7 @@ def test_update_package_cache_failure_no_errors(Pihole):
    mock_command('apt-get', {'update': ('', '1')}, Pihole)
    updateCache = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    update_package_cache
    ''')
    expected_stdout = cross_box + ' Update local cache of available packages'
@@ -359,7 +357,7 @@ def test_FTL_download_aarch64_no_errors(Pihole):
    mock_command('whiptail', {'*': ('', '0')}, Pihole)
    Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    install_dependent_packages ${INSTALLER_DEPS[@]}
    ''')
    download_binary = Pihole.run('''
@@ -569,7 +567,8 @@ def test_os_check_fails(Pihole):
    ''' Confirms install fails on unsupported OS '''
    Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
+    install_dependent_packages ${OS_CHECK_DEPS[@]}
    install_dependent_packages ${INSTALLER_DEPS[@]}
    cat <<EOT > /etc/os-release
    ID=UnsupportedOS
@@ -588,7 +587,8 @@ def test_os_check_passes(Pihole):
    ''' Confirms OS meets the requirements '''
    Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
+    install_dependent_packages ${OS_CHECK_DEPS[@]}
    install_dependent_packages ${INSTALLER_DEPS[@]}
    ''')
    detectOS = Pihole.run('''
@@ -597,3 +597,42 @@ def test_os_check_passes(Pihole):
    ''')
    expected_stdout = 'Supported OS detected'
    assert expected_stdout in detectOS.stdout
+
+
+def test_package_manager_has_installer_deps(Pihole):
+    ''' Confirms OS is able to install the required packages for the installer'''
+    mock_command('whiptail', {'*': ('', '0')}, Pihole)
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    package_manager_detect
+    install_dependent_packages ${INSTALLER_DEPS[@]}
+    ''')
+
+    assert 'No package' not in output.stdout  # centos7 still exits 0...
+    assert output.rc == 0
+
+
+def test_package_manager_has_pihole_deps(Pihole):
+    ''' Confirms OS is able to install the required packages for Pi-hole '''
+    mock_command('whiptail', {'*': ('', '0')}, Pihole)
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    package_manager_detect
+    install_dependent_packages ${PIHOLE_DEPS[@]}
+    ''')
+
+    assert 'No package' not in output.stdout  # centos7 still exits 0...
+    assert output.rc == 0
+
+
+def test_package_manager_has_web_deps(Pihole):
+    ''' Confirms OS is able to install the required packages for web '''
+    mock_command('whiptail', {'*': ('', '0')}, Pihole)
+    output = Pihole.run('''
+    source /opt/pihole/basic-install.sh
+    package_manager_detect
+    install_dependent_packages ${PIHOLE_WEB_DEPS[@]}
+    ''')
+
+    assert 'No package' not in output.stdout  # centos7 still exits 0...
+    assert output.rc == 0
--- a/test/test_centos_7_support.py
+++ b/test/test_centos_7_support.py
@@ -9,13 +9,13 @@ def test_php_upgrade_default_optout_centos_eq_7(Pihole):
    '''
    confirms the default behavior to opt-out of installing PHP7 from REMI
    '''
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS. '
                                  'Deprecated PHP may be in use.')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed

@@ -27,13 +27,13 @@ def test_php_upgrade_user_optout_centos_eq_7(Pihole):
    '''
    # Whiptail dialog returns Cancel for user prompt
    mock_command('whiptail', {'*': ('', '1')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS. '
                                  'Deprecated PHP may be in use.')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed

@@ -45,16 +45,16 @@ def test_php_upgrade_user_optin_centos_eq_7(Pihole):
    '''
    # Whiptail dialog returns Continue for user prompt
    mock_command('whiptail', {'*': ('', '0')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
-    assert 'opt-out' not in distro_check.stdout
+    assert 'opt-out' not in package_manager_detect.stdout
    expected_stdout = info_box + (' Enabling Remi\'s RPM repository '
                                  '(https://rpms.remirepo.net)')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    expected_stdout = tick_box + (' Remi\'s RPM repository has '
                                  'been enabled for PHP7')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert remi_package.is_installed
--- a/test/test_centos_8_support.py
+++ b/test/test_centos_8_support.py
@@ -10,13 +10,13 @@ def test_php_upgrade_default_continue_centos_gte_8(Pihole):
    confirms the latest version of CentOS continues / does not optout
    (should trigger on CentOS7 only)
    '''
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    unexpected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS.'
                                    ' Deprecated PHP may be in use.')
-    assert unexpected_stdout not in distro_check.stdout
+    assert unexpected_stdout not in package_manager_detect.stdout
    # ensure remi was not installed on latest CentOS
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed
@@ -30,13 +30,13 @@ def test_php_upgrade_user_optout_skipped_centos_gte_8(Pihole):
    '''
    # Whiptail dialog returns Cancel for user prompt
    mock_command('whiptail', {'*': ('', '1')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    unexpected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS.'
                                    ' Deprecated PHP may be in use.')
-    assert unexpected_stdout not in distro_check.stdout
+    assert unexpected_stdout not in package_manager_detect.stdout
    # ensure remi was not installed on latest CentOS
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed
@@ -50,16 +50,16 @@ def test_php_upgrade_user_optin_skipped_centos_gte_8(Pihole):
    '''
    # Whiptail dialog returns Continue for user prompt
    mock_command('whiptail', {'*': ('', '0')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
-    assert 'opt-out' not in distro_check.stdout
+    assert 'opt-out' not in package_manager_detect.stdout
    unexpected_stdout = info_box + (' Enabling Remi\'s RPM repository '
                                    '(https://rpms.remirepo.net)')
-    assert unexpected_stdout not in distro_check.stdout
+    assert unexpected_stdout not in package_manager_detect.stdout
    unexpected_stdout = tick_box + (' Remi\'s RPM repository has '
                                    'been enabled for PHP7')
-    assert unexpected_stdout not in distro_check.stdout
+    assert unexpected_stdout not in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed
--- a/test/test_centos_common_support.py
+++ b/test/test_centos_common_support.py
@@ -13,29 +13,29 @@ def test_release_supported_version_check_centos(Pihole):
    '''
    # modify /etc/redhat-release to mock an unsupported CentOS release
    Pihole.run('echo "CentOS Linux release 6.9" > /etc/redhat-release')
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = cross_box + (' CentOS 6 is not supported.')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    expected_stdout = 'Please update to CentOS release 7 or later'
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout


 def test_enable_epel_repository_centos(Pihole):
    '''
    confirms the EPEL package repository is enabled when installed on CentOS
    '''
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = info_box + (' Enabling EPEL package repository '
                                  '(https://fedoraproject.org/wiki/EPEL)')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    expected_stdout = tick_box + ' Installed epel-release'
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    epel_package = Pihole.package('epel-release')
    assert epel_package.is_installed

@@ -51,13 +51,13 @@ def test_php_version_lt_7_detected_upgrade_default_optout_centos(Pihole):
    default_centos_php_version = php_package.version.split('.')[0]
    if int(default_centos_php_version) >= 7:  # PHP7 is supported/recommended
        pytest.skip("Test deprecated . Detected default PHP version >= 7")
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS. '
                                  'Deprecated PHP may be in use.')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed

@@ -75,13 +75,13 @@ def test_php_version_lt_7_detected_upgrade_user_optout_centos(Pihole):
        pytest.skip("Test deprecated . Detected default PHP version >= 7")
    # Whiptail dialog returns Cancel for user prompt
    mock_command('whiptail', {'*': ('', '1')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
    expected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS. '
                                  'Deprecated PHP may be in use.')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert not remi_package.is_installed

@@ -99,20 +99,20 @@ def test_php_version_lt_7_detected_upgrade_user_optin_centos(Pihole):
        pytest.skip("Test deprecated . Detected default PHP version >= 7")
    # Whiptail dialog returns Continue for user prompt
    mock_command('whiptail', {'*': ('', '0')}, Pihole)
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    install_dependent_packages PIHOLE_WEB_DEPS[@]
    ''')
    expected_stdout = info_box + (' User opt-out of PHP 7 upgrade on CentOS. '
                                  'Deprecated PHP may be in use.')
-    assert expected_stdout not in distro_check.stdout
+    assert expected_stdout not in package_manager_detect.stdout
    expected_stdout = info_box + (' Enabling Remi\'s RPM repository '
                                  '(https://rpms.remirepo.net)')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    expected_stdout = tick_box + (' Remi\'s RPM repository has '
                                  'been enabled for PHP7')
-    assert expected_stdout in distro_check.stdout
+    assert expected_stdout in package_manager_detect.stdout
    remi_package = Pihole.package('remi-release')
    assert remi_package.is_installed
    updated_php_package = Pihole.package('php')
--- a/test/test_fedora_support.py
+++ b/test/test_fedora_support.py
@@ -3,11 +3,11 @@ def test_epel_and_remi_not_installed_fedora(Pihole):
    confirms installer does not attempt to install EPEL/REMI repositories
    on Fedora
    '''
-    distro_check = Pihole.run('''
+    package_manager_detect = Pihole.run('''
    source /opt/pihole/basic-install.sh
-    distro_check
+    package_manager_detect
    ''')
-    assert distro_check.stdout == ''
+    assert package_manager_detect.stdout == ''

    epel_package = Pihole.package('epel-release')
    assert not epel_package.is_installed
--- a/test/tox.debian_11.ini
+++ b/test/tox.debian_11.ini
@@ -0,0 +1,8 @@
+[tox]
+envlist = py37
+
+[testenv]
+whitelist_externals = docker
+deps = -rrequirements.txt
+commands = docker build -f _debian_11.Dockerfile -t pytest_pihole:test_container ../
+           pytest {posargs:-vv -n auto} ./test_automated_install.py
--- a/test/tox.ubuntu_21.ini
+++ b/test/tox.ubuntu_21.ini
@@ -0,0 +1,8 @@
+[tox]
+envlist = py37
+
+[testenv]
+whitelist_externals = docker
+deps = -rrequirements.txt
+commands = docker build -f _ubuntu_21.Dockerfile -t pytest_pihole:test_container ../
+           pytest {posargs:-vv -n auto} ./test_automated_install.py