Gateway did not respond / No internet

Expected Behaviour:

Pi-hole configured as DHCP server, devices can ping each other and have internet connection

Actual Behaviour:

Devices can ping each other but none of them have internet connection

Debug Token (Because of no connection I put the content of the log here):

*** [ INITIALIZING ]
[i] 2021-02-05:23:06:05 debug log has been initialized.

*** [ INITIALIZING ] Sourcing setup variables
[i] Sourcing /etc/pihole/setupVars.conf...

*** [ DIAGNOSING ]: Core version
[i] Core: v5.2.4 (https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249)
[i] Remotes: origin     https://github.com/pi-hole/pi-hole.git (fetch)
             origin     https://github.com/pi-hole/pi-hole.git (push)
[i] Branch: master
[i] Commit: v5.2.4-0-gcbfb58f

*** [ DIAGNOSING ]: Web version
[i] Web: v5.3.2 (https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249)
[i] Remotes: origin     https://github.com/pi-hole/AdminLTE.git (fetch)
             origin     https://github.com/pi-hole/AdminLTE.git (push)
[i] Branch: master
[i] Commit: v5.3.2-0-g1521dfe

*** [ DIAGNOSING ]: FTL version
[✓] FTL: v5.6 (https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249)

*** [ DIAGNOSING ]: lighttpd version
[i] 1.4.53

*** [ DIAGNOSING ]: php version
[i] 7.3.19

*** [ DIAGNOSING ]: Operating system
[i] dig return code:  10
[i] dig response:  dig: couldn't get address for 'ns1.pi-hole.net': failure
[✗] Distro:  Raspbian
[✗] Error: Raspbian is not a supported distro (https://docs.pi-hole.net/main/prerequisites/)

*** [ DIAGNOSING ]: SELinux
[i] SELinux not detected

*** [ DIAGNOSING ]: FirewallD
[i] Firewalld service inactive

*** [ DIAGNOSING ]: Processor
[✓] armv7l

*** [ DIAGNOSING ]: Networking
[✓] IPv4 address(es) bound to the eth0 interface:
   192.168.0.2/24 matches the IP found in /etc/pihole/setupVars.conf

[✓] IPv6 address(es) bound to the eth0 interface:
   fe80::4b72:505a:be44:9d19 does not match the IP found in /etc/pihole/setupVars.conf (https://discourse.pi-hole.net/t/use-ipv6-ula-addresses-for-pi-hole/2127)

   ^ Please note that you may have more than one IP address listed.
   As long as one of them is green, and it matches what is in /etc/pihole/setupVars.conf, there is no need for concern.

   The link to the FAQ is for an issue that sometimes occurs when the IPv6 address changes, which is why we check for it.

[i] Default IPv4 gateway: 192.168.0.1
   * Pinging 192.168.0.1...
[✗] Gateway did not respond. (https://discourse.pi-hole.net/t/why-is-a-default-gateway-important-for-pi-hole/3546)


*** [ DIAGNOSING ]: Ports in use
*:22 sshd (IPv4)
*:22 sshd (IPv6)
[80] is in use by lighttpd
[80] is in use by lighttpd
[53] is in use by pihole-FTL
[53] is in use by pihole-FTL
[4711] is in use by pihole-FTL
[4711] is in use by pihole-FTL

*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] olx.pl-offerta.me is 0.0.0.0 via localhost (127.0.0.1)
[✓] olx.pl-offerta.me is 0.0.0.0 via Pi-hole (192.168.0.2)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (8.8.8.8)

*** [ DIAGNOSING ]: Name resolution (IPv6) using a random blocked domain and a known ad-serving domain
[✓] iad02-event.spotxchange.com is :: via localhost (::1)
[✗] Failed to resolve iad02-event.spotxchange.com via Pi-hole (2a02:8108:d40:44:66ec:91ee:13ee:3cd3)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (2001:4860:4860::8888)

*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
   Scanning all your interfaces for DHCP servers
   Timeout: 10 seconds

   WARN: Could not sendto() in send_dhcp_discover() (/root/project/src/dhcp-discover.c:229): Network is unreachable
   * Received 300 bytes from eth0:192.168.0.2
     Offered IP address: 192.168.0.99
     Server IP address: 192.168.0.2
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.0.2
      lease-time: 120 ( 2m )
      renewal-time: 60 ( 1m )
      rebinding-time: 105 ( 1m 45s )
      netmask: 255.255.255.0
      broadcast: 192.168.0.255
      dns-server: 192.168.0.2
      domain-name: "lan"
      router: 192.168.0.1
      --- end of options ---

   DHCP packets received on interface lo: 0
   DHCP packets received on interface wlan0: 0
   DHCP packets received on interface eth0: 1

*** [ DIAGNOSING ]: Pi-hole processes
[✓] lighttpd daemon is active
[✓] pihole-FTL daemon is active

*** [ DIAGNOSING ]: Pi-hole-FTL full status
   ● pihole-FTL.service - LSB: pihole-FTL daemon
   Loaded: loaded (/etc/init.d/pihole-FTL; generated)
   Active: active (exited) since Fri 2021-02-05 23:05:50 GMT; 45s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 564 ExecStart=/etc/init.d/pihole-FTL start (code=exited, status=0/SUCCESS)

Feb 05 23:05:49 raspberrypi systemd[1]: Starting LSB: pihole-FTL daemon...
Feb 05 23:05:49 raspberrypi pihole-FTL[564]: Not running
Feb 05 23:05:50 raspberrypi su[590]: (to pihole) root on none
Feb 05 23:05:50 raspberrypi su[590]: pam_unix(su:session): session opened for user pihole by (uid=0)
Feb 05 23:05:50 raspberrypi pihole-FTL[564]: FTL started!
Feb 05 23:05:50 raspberrypi su[590]: pam_unix(su:session): session closed for user pihole
Feb 05 23:05:50 raspberrypi systemd[1]: Started LSB: pihole-FTL daemon.

*** [ DIAGNOSING ]: Setup variables
    BLOCKING_ENABLED=true
    ADMIN_EMAIL=
    WEBUIBOXEDLAYOUT=boxed
    WEBTHEME=default-dark
    DNSMASQ_LISTENING=single
    PIHOLE_DNS_3=2606:4700:4700::1111
    PIHOLE_DNS_4=2606:4700:4700::1001
    DNS_FQDN_REQUIRED=true
    DNS_BOGUS_PRIV=true
    DNSSEC=false
    REV_SERVER=false
    PIHOLE_INTERFACE=eth0
    IPV4_ADDRESS=192.168.0.2/24
    IPV6_ADDRESS=2a02:8108:d40:44:66ec:91ee:13ee:3cd3
    PIHOLE_DNS_1=1.1.1.1
    PIHOLE_DNS_2=1.0.0.1
    QUERY_LOGGING=true
    INSTALL_WEB_SERVER=true
    INSTALL_WEB_INTERFACE=true
    LIGHTTPD_ENABLED=true
    CACHE_SIZE=10000
    DHCP_ACTIVE=true
    DHCP_START=192.168.0.50
    DHCP_END=192.168.0.251
    DHCP_ROUTER=192.168.0.1
    DHCP_LEASETIME=168
    PIHOLE_DOMAIN=lan
    DHCP_IPv6=true
    DHCP_rapid_commit=false

*** [ DIAGNOSING ]: Dashboard and block page
[✗] Block page X-Header: X-Header does not match or could not be retrieved.
HTTP/1.1 200 OK
Content-type: text/html; charset=UTF-8
Expires: Fri, 05 Feb 2021 23:06:37 GMT
Cache-Control: max-age=0
Date: Fri, 05 Feb 2021 23:06:37 GMT
Server: lighttpd/1.4.53

[✓] Web interface X-Header: X-Pi-hole: The Pi-hole Web interface is working!

*** [ DIAGNOSING ]: Gravity List and Database
-rw-rw-r-- 1 pihole pihole 3543040 Feb  5 20:47 /etc/pihole/gravity.db

*** [ DIAGNOSING ]: Info table
   property              value
   --------------------  ----------------------------------------
   version               13
   updated               1612558061
   gravity_count         60414
   Last gravity run finished at: Fri  5 Feb 20:47:41 GMT 2021

   ----- First 10 Gravity Domains -----
   localhost.localdomain
   n2019cov.000webhostapp.com
   webmail-who-int.000webhostapp.com
   010sec.com
   01mspmd5yalky8.com
   0byv9mgbn0.com
   ns6.0pendns.org
   dns.0pengl.com
   ios.0pengl.com
   0x4fc271.tk


*** [ DIAGNOSING ]: Groups
   id    enabled  name                                                date_added           date_modified        description
   ----  -------  --------------------------------------------------  -------------------  -------------------  --------------------------------------------------
   0           1  Default                                             2020-08-14 20:41:12  2020-08-14 20:41:12  The default group

*** [ DIAGNOSING ]: Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)

*** [ DIAGNOSING ]: Clients

*** [ DIAGNOSING ]: Adlists
   id    enabled  group_ids     address                                                                                               date_added           date_modified        comment
   ----  -------  ------------  ----------------------------------------------------------------------------------------------------  -------------------  -------------------  --------------------------------------------------
   1           1  0             https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts                                      2020-08-14 20:41:12  2020-08-14 20:41:12  Migrated from /etc/pihole/adlists.list
   2           1  0             https://mirror1.malwaredomains.com/files/justdomains                                                  2020-08-14 20:41:12  2020-08-14 20:41:12  Migrated from /etc/pihole/adlists.list

*** [ DIAGNOSING ]: contents of /etc/pihole

-rw-r--r-- 1 root root 138 Feb  5 20:47 /etc/pihole/local.list
   192.168.0.2 raspberrypi
   2a02:8108:d40:44:66ec:91ee:13ee:3cd3 raspberrypi
   192.168.0.2 pi.hole
   2a02:8108:d40:44:66ec:91ee:13ee:3cd3 pi.hole

-rw-r--r-- 1 root root 234 Feb  5 20:47 /etc/pihole/logrotate
   /var/log/pihole.log {
        su root root
        daily
        copytruncate
        rotate 5
        compress
        delaycompress
        notifempty
        nomail
   }
   /var/log/pihole-FTL.log {
        su root root
        weekly
        copytruncate
        rotate 3
        compress
        delaycompress
        notifempty
        nomail
   }

-rw-rw-r-- 1 pihole root 15 Feb  5 20:47 /etc/pihole/pihole-FTL.conf
   PRIVACYLEVEL=0

*** [ DIAGNOSING ]: contents of /etc/dnsmasq.d

-rw-r--r-- 1 root root 1604 Feb  5 22:26 /etc/dnsmasq.d/01-pihole.conf
   addn-hosts=/etc/pihole/local.list
   addn-hosts=/etc/pihole/custom.list
   localise-queries
   no-resolv
   cache-size=10000
   log-queries
   log-facility=/var/log/pihole.log
   local-ttl=2
   log-async
   server=1.1.1.1
   server=1.0.0.1
   server=2606:4700:4700::1111
   server=2606:4700:4700::1001
   domain-needed
   expand-hosts
   bogus-priv
   interface=eth0
   server=/use-application-dns.net/
   dhcp-name-match=set:hostname-ignore,wpad
   dhcp-name-match=set:hostname-ignore,localhost
   dhcp-ignore-names=tag:hostname-ignore

-rw-r--r-- 1 root root 631 Feb  5 22:26 /etc/dnsmasq.d/02-pihole-dhcp.conf
   dhcp-authoritative
   dhcp-range=192.168.0.50,192.168.0.251,168h
   dhcp-option=option:router,192.168.0.1
   dhcp-leasefile=/etc/pihole/dhcp.leases
   domain=lan
   local=/lan/
   dhcp-option=option6:dns-server,[::]
   dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac,168h
   ra-param=*,0,0

*** [ DIAGNOSING ]: contents of /etc/lighttpd

-rw-r--r-- 1 root root 0 Feb  5 20:47 /etc/lighttpd/external.conf

-rw-r--r-- 1 root root 4066 Feb  5 20:47 /etc/lighttpd/lighttpd.conf
   server.modules = (
       "mod_access",
       "mod_accesslog",
       "mod_auth",
       "mod_expire",
       "mod_compress",
       "mod_redirect",
       "mod_setenv",
       "mod_rewrite"
   )
   server.document-root        = "/var/www/html"
   server.error-handler-404    = "/pihole/index.php"
   server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
   server.errorlog             = "/var/log/lighttpd/error.log"
   server.pid-file             = "/run/lighttpd.pid"
   server.username             = "www-data"
   server.groupname            = "www-data"
   server.port                 = 80
   accesslog.filename          = "/var/log/lighttpd/access.log"
   accesslog.format            = "%{%s}t|%V|%r|%s|%b"
   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",
       ".jpg"   => "image/jpeg",
       ".png"   => "image/png",
       ".svg"   => "image/svg+xml",
       ".css"   => "text/css; charset=utf-8",
       ".html"  => "text/html; charset=utf-8",
       ".js"    => "text/javascript; charset=utf-8",
       ".json"  => "application/json; charset=utf-8",
       ".map"   => "application/json; charset=utf-8",
       ".txt"   => "text/plain; charset=utf-8",
       ".eot"   => "application/vnd.ms-fontobject",
       ".otf"   => "font/otf",
       ".ttc"   => "font/collection",
       ".ttf"   => "font/ttf",
       ".woff"  => "font/woff",
       ".woff2" => "font/woff2"
   )
   include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
   include_shell "find /etc/lighttpd/conf-enabled -name '*.conf' -a ! -name 'letsencrypt.conf' -printf 'include \"%p\"
' 2>/dev/null"
   $HTTP["url"] =~ "^/admin/" {
       setenv.add-response-header = (
           "X-Pi-hole" => "The Pi-hole Web interface is working!",
           "X-Frame-Options" => "DENY"
       )
       $HTTP["url"] =~ "\.(eot|otf|tt[cf]|woff2?)$" {
           setenv.add-response-header = ( "Access-Control-Allow-Origin" => "*" )
       }
   }
   $HTTP["url"] =~ "^/admin/\.(.*)" {
       url.access-deny = ("")
   }
   expire.url = ( "" => "access plus 0 seconds" )
   include_shell "cat external.conf 2>/dev/null"

*** [ DIAGNOSING ]: contents of /etc/cron.d

-rw-r--r-- 1 root root 1754 Feb  5 20:47 /etc/cron.d/pihole
   5 3   * * 7   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updateGravity >/var/log/pihole_updateGravity.log || cat /var/log/pihole_updateGravity.log
   00 00   * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole flush once quiet
   @reboot root /usr/sbin/logrotate /etc/pihole/logrotate
   */10 *  * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local
   55 19  * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker remote
   @reboot root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker remote reboot

*** [ DIAGNOSING ]: contents of /var/log/lighttpd

-rw-r--r-- 1 www-data www-data 2888 Feb  5 23:06 /var/log/lighttpd/error.log
   -----head of error.log------
   2021-01-31 00:00:02: (server.c.1759) logfiles cycled UID = 0 PID = 8860
   2021-02-05 19:45:44: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 19:58:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 20:20:42: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 20:47:32: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 20:47:32: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:23:57: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:25:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:25:27: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:05:26: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 23:05:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58

   -----tail of error.log------
   2021-01-31 00:00:02: (server.c.1759) logfiles cycled UID = 0 PID = 8860
   2021-02-05 19:45:44: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 19:58:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 20:20:42: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 20:47:32: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 20:47:32: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:23:57: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:25:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:25:27: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:05:26: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 23:05:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58

*** [ DIAGNOSING ]: contents of /var/log

-rw-r--r-- 1 pihole pihole 169698 Feb  5 23:05 /var/log/pihole-FTL.log
   -----head of pihole-FTL.log------
   [2021-02-05 19:47:45.178 13339M] Shutting down...
   [2021-02-05 19:47:45.179 13339M] Finished final database update
   [2021-02-05 19:47:45.179 13339M] ########## FTL terminated after 9.013821e+06 s! ##########
   [2021-02-05 19:47:45.362 32168M] Using log file /var/log/pihole-FTL.log
   [2021-02-05 19:47:45.362 32168M] ########## FTL started! ##########
   [2021-02-05 19:47:45.362 32168M] FTL branch: master
   [2021-02-05 19:47:45.362 32168M] FTL version: v5.2
   [2021-02-05 19:47:45.362 32168M] FTL commit: dbd4a69
   [2021-02-05 19:47:45.363 32168M] FTL date: 2020-08-09 22:09:43 +0100
   [2021-02-05 19:47:45.363 32168M] FTL user: pihole
   [2021-02-05 19:47:45.363 32168M] Compiled for armhf (compiled on CI) using arm-linux-gnueabihf-gcc (Debian 6.3.0-18) 6.3.0 20170516
   [2021-02-05 19:47:45.363 32168M] Starting config file parsing (/etc/pihole/pihole-FTL.conf)
   [2021-02-05 19:47:45.363 32168M]    SOCKET_LISTENING: only local
   [2021-02-05 19:47:45.363 32168M]    AAAA_QUERY_ANALYSIS: Show AAAA queries
   [2021-02-05 19:47:45.363 32168M]    MAXDBDAYS: max age for stored queries is 365 days
   [2021-02-05 19:47:45.363 32168M]    RESOLVE_IPV6: Resolve IPv6 addresses
   [2021-02-05 19:47:45.363 32168M]    RESOLVE_IPV4: Resolve IPv4 addresses
   [2021-02-05 19:47:45.363 32168M]    DBINTERVAL: saving to DB file every minute
   [2021-02-05 19:47:45.363 32168M]    DBFILE: Using /etc/pihole/pihole-FTL.db
   [2021-02-05 19:47:45.363 32168M]    MAXLOGAGE: Importing up to 24.0 hours of log data
   [2021-02-05 19:47:45.363 32168M]    PRIVACYLEVEL: Set to 0
   [2021-02-05 19:47:45.363 32168M]    IGNORE_LOCALHOST: Show queries from localhost
   [2021-02-05 19:47:45.363 32168M]    BLOCKINGMODE: Null IPs for blocked domains
   [2021-02-05 19:47:45.363 32168M]    ANALYZE_ONLY_A_AND_AAAA: Disabled. Analyzing all queries
   [2021-02-05 19:47:45.363 32168M]    DBIMPORT: Importing history from database
   [2021-02-05 19:47:45.363 32168M]    PIDFILE: Using /run/pihole-FTL.pid
   [2021-02-05 19:47:45.363 32168M]    PORTFILE: Using /run/pihole-FTL.port
   [2021-02-05 19:47:45.363 32168M]    SOCKETFILE: Using /run/pihole/FTL.sock
   [2021-02-05 19:47:45.363 32168M]    SETUPVARSFILE: Using /etc/pihole/setupVars.conf
   [2021-02-05 19:47:45.363 32168M]    MACVENDORDB: Using /etc/pihole/macvendor.db
   [2021-02-05 19:47:45.363 32168M]    GRAVITYDB: Using /etc/pihole/gravity.db
   [2021-02-05 19:47:45.363 32168M]    PARSE_ARP_CACHE: Active
   [2021-02-05 19:47:45.363 32168M]    CNAME_DEEP_INSPECT: Active
   [2021-02-05 19:47:45.363 32168M]    DELAY_STARTUP: No delay requested.
   [2021-02-05 19:47:45.364 32168M]    NICE: Set process niceness to -10 (default)

   -----tail of pihole-FTL.log------
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.627 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Warning: Found unknown status 14 in long term database!
   [2021-02-05 23:05:50.628 623M] Imported 5362 queries from the long-term database
   [2021-02-05 23:05:50.628 623M]  -> Total DNS queries: 5362
   [2021-02-05 23:05:50.628 623M]  -> Cached DNS queries: 668
   [2021-02-05 23:05:50.628 623M]  -> Forwarded DNS queries: 1114
   [2021-02-05 23:05:50.628 623M]  -> Blocked DNS queries: 43
   [2021-02-05 23:05:50.628 623M]  -> Unknown DNS queries: 12
   [2021-02-05 23:05:50.629 623M]  -> Unique domains: 196
   [2021-02-05 23:05:50.629 623M]  -> Unique clients: 47
   [2021-02-05 23:05:50.629 623M]  -> Known forward destinations: 1
   [2021-02-05 23:05:50.629 623M] Successfully accessed setupVars.conf
   [2021-02-05 23:05:50.640 625M] PID of FTL process: 625
   [2021-02-05 23:05:50.641 625/T626] Listening on port 4711 for incoming IPv4 telnet connections
   [2021-02-05 23:05:50.641 625/T628] Listening on Unix socket
   [2021-02-05 23:05:50.642 625M] INFO: FTL is running as user pihole (UID 999)
   [2021-02-05 23:05:50.642 625/T627] Listening on port 4711 for incoming IPv6 telnet connections
   [2021-02-05 23:05:50.644 625M] Reloading DNS cache
   [2021-02-05 23:05:50.644 625M] Blocking status is enabled
   [2021-02-05 23:05:50.779 625/T629] Compiled 0 whitelist and 0 blacklist regex filters for 47 clients in 2.3 msec
   [2021-02-05 23:05:57.723 625M] New upstream server: 1.1.1.1:53 (1/1024)

*** [ DIAGNOSING ]: contents of /dev/shm
-rw------- 1 pihole pihole 339968 Feb  5 23:05 /dev/shm/FTL-clients
-rw------- 1 pihole pihole 152 Feb  5 23:05 /dev/shm/FTL-counters
-rw------- 1 pihole pihole 4096 Feb  5 23:05 /dev/shm/FTL-dns-cache
-rw------- 1 pihole pihole 65536 Feb  5 23:05 /dev/shm/FTL-domains
-rw------- 1 pihole pihole 28 Feb  5 23:05 /dev/shm/FTL-lock
-rw------- 1 pihole pihole 45056 Feb  5 23:05 /dev/shm/FTL-overTime
-rw------- 1 pihole pihole 4096 Feb  5 23:05 /dev/shm/FTL-per-client-regex
-rw------- 1 pihole pihole 458752 Feb  5 23:05 /dev/shm/FTL-queries
-rw------- 1 pihole pihole 12 Feb  5 23:05 /dev/shm/FTL-settings
-rw------- 1 pihole pihole 8192 Feb  5 23:05 /dev/shm/FTL-strings
-rw------- 1 pihole pihole 28672 Feb  5 23:05 /dev/shm/FTL-upstreams

*** [ DIAGNOSING ]: Pi-hole diagnosis messages

*** [ DIAGNOSING ]: Locale
    LANG=en_GB.UTF-8

*** [ DIAGNOSING ]: Pi-hole log
-rw-r--r-- 1 pihole pihole 1156272 Feb  5 23:06 /var/log/pihole.log
   -----head of pihole.log------
   Feb  5 06:50:56 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 08:01:58 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 08:47:50 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 09:33:37 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 09:40:10 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 09:44:09 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 13:17:08 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 14:10:59 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 14:14:41 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 15:25:01 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 16:12:08 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 16:12:20 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 17:14:24 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 17:14:24 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 17:39:15 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 17:57:14 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 17:57:29 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 18:31:31 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 19:29:21 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0
   Feb  5 19:29:21 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0


********************************************
********************************************
[✓] ** FINISHED DEBUGGING! **

Do you block port 53 on your router?


You run out of IPs within your DHCP range - you should offer a bigger range. How many clients do you have on your network?

add

You should upgrade your Pi-hole installation once possible.

200 slots are large enough to accomodate 47 clients.

As PapaSierra's network is lacking IPv6 connectivity, it is quite likely that DHCPv6 can't offer an address range due to lack of IPv6 prefixes.

*** [ DIAGNOSING ]: contents of /etc/dnsmasq.d
-rw-r--r-- 1 root root 631 Feb  5 22:26 /etc/dnsmasq.d/02-pihole-dhcp.conf
   dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac,168h

*** [ DIAGNOSING ]: Pi-hole log
-rw-r--r-- 1 pihole pihole 1156272 Feb  5 23:06 /var/log/pihole.log
   -----head of pihole.log------
   Feb  5 06:50:56 dnsmasq-dhcp[13339]: no address range available for DHCP request via eth0

Switching off IPv6 support via Pihole's Settings | DHCP would make that warning message disappear.

Continuing the discussion from Gateway did not respond / No internet:

yubiuser
Do you block port 53 on your router?

Not that I know and I find no setting on the router for this.

yubiuser
How many clients do you have on your network?

It should be around 10, but 47???

So today I did a pihole -r and deactivated IPv6 in settings but it's still the same. I don't get it.

Some additional information about my network (<=> means connected via cable, ~~~ means connected via wifi):

Technicolor CGA4233DE / Router/Gateway (Bridge mode; 192.168.0.1)
	<=> Zyxel Multy X (Bridge mode)
		<=> Raspberry Pi / Pi-hole (DHCP; 192.168.0.2)
			~~~ Laptop (Default gateway: fe80::1%2, 192.168.0.1; DHCP-Server: 192.168.0.2; DNS-Server: 192.168.0.2)

From the laptop I can access the Pi via ssh, but both cannot access the router/gateway (192.168.0.1).

And the new log:

*** [ INITIALIZING ]
[i] 2021-02-06:19:21:13 debug log has been initialized.

*** [ INITIALIZING ] Sourcing setup variables
[i] Sourcing /etc/pihole/setupVars.conf...

*** [ DIAGNOSING ]: Core version
[i] Core: v5.2.4 (https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249)
[i] Remotes: origin     https://github.com/pi-hole/pi-hole.git (fetch)
             origin     https://github.com/pi-hole/pi-hole.git (push)
[i] Branch: master
[i] Commit: v5.2.4-0-gcbfb58f

*** [ DIAGNOSING ]: Web version
[i] Web: v5.3.2 (https://discourse.pi-hole.net/t/how-do-i-update-pi-hole/249)
[i] Remotes: origin     https://github.com/pi-hole/AdminLTE.git (fetch)
             origin     https://github.com/pi-hole/AdminLTE.git (push)
[i] Branch: master
[i] Commit: v5.3.2-0-g1521dfe

*** [ DIAGNOSING ]: FTL version
[✓] FTL: v5.6

*** [ DIAGNOSING ]: lighttpd version
[i] 1.4.53

*** [ DIAGNOSING ]: php version
[i] 7.3.19

*** [ DIAGNOSING ]: Operating system
[i] dig return code:  10
[i] dig response:  dig: couldn't get address for 'ns1.pi-hole.net': failure
[✗] Distro:  Raspbian
[✗] Error: Raspbian is not a supported distro (https://docs.pi-hole.net/main/prerequisites/)

*** [ DIAGNOSING ]: SELinux
[i] SELinux not detected

*** [ DIAGNOSING ]: FirewallD
[i] Firewalld service inactive

*** [ DIAGNOSING ]: Processor
[✓] armv7l

*** [ DIAGNOSING ]: Networking
[✓] IPv4 address(es) bound to the eth0 interface:
   192.168.0.2/24 matches the IP found in /etc/pihole/setupVars.conf

[✓] IPv6 address(es) bound to the eth0 interface:
   fe80::4b72:505a:be44:9d19 matches the IP found in /etc/pihole/setupVars.conf

   ^ Please note that you may have more than one IP address listed.
   As long as one of them is green, and it matches what is in /etc/pihole/setupVars.conf, there is no need for concern.

   The link to the FAQ is for an issue that sometimes occurs when the IPv6 address changes, which is why we check for it.

[i] Default IPv4 gateway: 192.168.0.1
   * Pinging 192.168.0.1...
[✗] Gateway did not respond. (https://discourse.pi-hole.net/t/why-is-a-default-gateway-important-for-pi-hole/3546)


*** [ DIAGNOSING ]: Ports in use
*:22 sshd (IPv4)
*:22 sshd (IPv6)
[80] is in use by lighttpd
[80] is in use by lighttpd
[53] is in use by pihole-FTL
[53] is in use by pihole-FTL
[4711] is in use by pihole-FTL
[4711] is in use by pihole-FTL

*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] greenelephants14.live is 0.0.0.0 via localhost (127.0.0.1)
[✓] greenelephants14.live is 0.0.0.0 via Pi-hole (192.168.0.2)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (8.8.8.8)

*** [ DIAGNOSING ]: Name resolution (IPv6) using a random blocked domain and a known ad-serving domain
[✓] www.dlmyfile.com is :: via localhost (::1)
[✓] www.dlmyfile.com is :: via Pi-hole (fe80::4b72:505a:be44:9d19)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (2001:4860:4860::8888)

*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
   Scanning all your interfaces for DHCP servers
   Timeout: 10 seconds

   WARN: Could not sendto() in send_dhcp_discover() (/root/project/src/dhcp-discover.c:229): Network is unreachable
   * Received 300 bytes from eth0:192.168.0.2
     Offered IP address: 192.168.0.100
     Server IP address: 192.168.0.2
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.0.2
      lease-time: 120 ( 2m )
      renewal-time: 60 ( 1m )
      rebinding-time: 105 ( 1m 45s )
      netmask: 255.255.255.0
      broadcast: 192.168.0.255
      dns-server: 192.168.0.2
      domain-name: "lan"
      router: 192.168.0.1
      --- end of options ---

   DHCP packets received on interface eth0: 1
   DHCP packets received on interface wlan0: 0
   DHCP packets received on interface lo: 0

*** [ DIAGNOSING ]: Pi-hole processes
[✓] lighttpd daemon is active
[✓] pihole-FTL daemon is active

*** [ DIAGNOSING ]: Pi-hole-FTL full status
   ● pihole-FTL.service - LSB: pihole-FTL daemon
   Loaded: loaded (/etc/init.d/pihole-FTL; generated)
   Active: active (exited) since Sat 2021-02-06 19:19:49 GMT; 1min 52s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 9964 ExecStart=/etc/init.d/pihole-FTL start (code=exited, status=0/SUCCESS)

Feb 06 19:19:48 raspberrypi systemd[1]: Starting LSB: pihole-FTL daemon...
Feb 06 19:19:48 raspberrypi pihole-FTL[9964]: Not running
Feb 06 19:19:48 raspberrypi su[9982]: (to pihole) root on none
Feb 06 19:19:48 raspberrypi su[9982]: pam_unix(su:session): session opened for user pihole by (uid=0)
Feb 06 19:19:49 raspberrypi pihole-FTL[9964]: FTL started!
Feb 06 19:19:49 raspberrypi su[9982]: pam_unix(su:session): session closed for user pihole
Feb 06 19:19:49 raspberrypi systemd[1]: Started LSB: pihole-FTL daemon.

*** [ DIAGNOSING ]: Setup variables
    BLOCKING_ENABLED=true
    ADMIN_EMAIL=
    WEBUIBOXEDLAYOUT=boxed
    WEBTHEME=default-dark
    DNSMASQ_LISTENING=single
    PIHOLE_DNS_3=2606:4700:4700::1111
    PIHOLE_DNS_4=2606:4700:4700::1001
    DNS_FQDN_REQUIRED=true
    DNS_BOGUS_PRIV=true
    DNSSEC=false
    REV_SERVER=false
    PIHOLE_INTERFACE=eth0
    IPV4_ADDRESS=192.168.0.2/24
    IPV6_ADDRESS=fe80::4b72:505a:be44:9d19
    PIHOLE_DNS_1=1.1.1.1
    PIHOLE_DNS_2=1.0.0.1
    QUERY_LOGGING=true
    INSTALL_WEB_SERVER=true
    INSTALL_WEB_INTERFACE=true
    LIGHTTPD_ENABLED=true
    CACHE_SIZE=10000
    DHCP_ACTIVE=true
    DHCP_START=192.168.0.50
    DHCP_END=192.168.0.251
    DHCP_ROUTER=192.168.0.1
    DHCP_LEASETIME=168
    PIHOLE_DOMAIN=lan
    DHCP_IPv6=false
    DHCP_rapid_commit=false

*** [ DIAGNOSING ]: Dashboard and block page
[✗] Block page X-Header: X-Header does not match or could not be retrieved.
HTTP/1.1 200 OK
Content-type: text/html; charset=UTF-8
Expires: Sat, 06 Feb 2021 19:21:41 GMT
Cache-Control: max-age=0
Date: Sat, 06 Feb 2021 19:21:41 GMT
Server: lighttpd/1.4.53

[✓] Web interface X-Header: X-Pi-hole: The Pi-hole Web interface is working!

*** [ DIAGNOSING ]: Gravity List and Database
-rw-rw-r-- 1 pihole pihole 3543040 Feb  6 18:51 /etc/pihole/gravity.db

*** [ DIAGNOSING ]: Info table
   property              value
   --------------------  ----------------------------------------
   version               13
   updated               1612637517
   gravity_count         60414
   Last gravity run finished at: Sat  6 Feb 18:51:57 GMT 2021

   ----- First 10 Gravity Domains -----
   localhost.localdomain
   n2019cov.000webhostapp.com
   webmail-who-int.000webhostapp.com
   010sec.com
   01mspmd5yalky8.com
   0byv9mgbn0.com
   ns6.0pendns.org
   dns.0pengl.com
   ios.0pengl.com
   0x4fc271.tk


*** [ DIAGNOSING ]: Groups
   id    enabled  name                                                date_added           date_modified        description
   ----  -------  --------------------------------------------------  -------------------  -------------------  --------------------------------------------------
   0           1  Default                                             2020-08-14 20:41:12  2020-08-14 20:41:12  The default group

*** [ DIAGNOSING ]: Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)

*** [ DIAGNOSING ]: Clients

*** [ DIAGNOSING ]: Adlists
   id    enabled  group_ids     address                                                                                               date_added           date_modified        comment
   ----  -------  ------------  ----------------------------------------------------------------------------------------------------  -------------------  -------------------  --------------------------------------------------
   1           1  0             https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts                                      2020-08-14 20:41:12  2020-08-14 20:41:12  Migrated from /etc/pihole/adlists.list
   2           1  0             https://mirror1.malwaredomains.com/files/justdomains                                                  2020-08-14 20:41:12  2020-08-14 20:41:12  Migrated from /etc/pihole/adlists.list

*** [ DIAGNOSING ]: contents of /etc/pihole

-rw-r--r-- 1 root root 116 Feb  6 18:51 /etc/pihole/local.list
   192.168.0.2 raspberrypi
   fe80::4b72:505a:be44:9d19 raspberrypi
   192.168.0.2 pi.hole
   fe80::4b72:505a:be44:9d19 pi.hole

-rw-r--r-- 1 root root 234 Feb  6 18:51 /etc/pihole/logrotate
   /var/log/pihole.log {
        su root root
        daily
        copytruncate
        rotate 5
        compress
        delaycompress
        notifempty
        nomail
   }
   /var/log/pihole-FTL.log {
        su root root
        weekly
        copytruncate
        rotate 3
        compress
        delaycompress
        notifempty
        nomail
   }

-rw-rw-r-- 1 pihole root 15 Feb  6 18:51 /etc/pihole/pihole-FTL.conf
   PRIVACYLEVEL=0

*** [ DIAGNOSING ]: contents of /etc/dnsmasq.d

-rw-r--r-- 1 root root 1604 Feb  6 19:19 /etc/dnsmasq.d/01-pihole.conf
   addn-hosts=/etc/pihole/local.list
   addn-hosts=/etc/pihole/custom.list
   localise-queries
   no-resolv
   cache-size=10000
   log-queries
   log-facility=/var/log/pihole.log
   local-ttl=2
   log-async
   server=1.1.1.1
   server=1.0.0.1
   server=2606:4700:4700::1111
   server=2606:4700:4700::1001
   domain-needed
   expand-hosts
   bogus-priv
   interface=eth0
   server=/use-application-dns.net/
   dhcp-name-match=set:hostname-ignore,wpad
   dhcp-name-match=set:hostname-ignore,localhost
   dhcp-ignore-names=tag:hostname-ignore

-rw-r--r-- 1 root root 495 Feb  6 19:19 /etc/dnsmasq.d/02-pihole-dhcp.conf
   dhcp-authoritative
   dhcp-range=192.168.0.50,192.168.0.251,168h
   dhcp-option=option:router,192.168.0.1
   dhcp-leasefile=/etc/pihole/dhcp.leases
   domain=lan
   local=/lan/

*** [ DIAGNOSING ]: contents of /etc/lighttpd

-rw-r--r-- 1 root root 0 Feb  6 18:51 /etc/lighttpd/external.conf

-rw-r--r-- 1 root root 4066 Feb  6 18:51 /etc/lighttpd/lighttpd.conf
   server.modules = (
       "mod_access",
       "mod_accesslog",
       "mod_auth",
       "mod_expire",
       "mod_compress",
       "mod_redirect",
       "mod_setenv",
       "mod_rewrite"
   )
   server.document-root        = "/var/www/html"
   server.error-handler-404    = "/pihole/index.php"
   server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
   server.errorlog             = "/var/log/lighttpd/error.log"
   server.pid-file             = "/run/lighttpd.pid"
   server.username             = "www-data"
   server.groupname            = "www-data"
   server.port                 = 80
   accesslog.filename          = "/var/log/lighttpd/access.log"
   accesslog.format            = "%{%s}t|%V|%r|%s|%b"
   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",
       ".jpg"   => "image/jpeg",
       ".png"   => "image/png",
       ".svg"   => "image/svg+xml",
       ".css"   => "text/css; charset=utf-8",
       ".html"  => "text/html; charset=utf-8",
       ".js"    => "text/javascript; charset=utf-8",
       ".json"  => "application/json; charset=utf-8",
       ".map"   => "application/json; charset=utf-8",
       ".txt"   => "text/plain; charset=utf-8",
       ".eot"   => "application/vnd.ms-fontobject",
       ".otf"   => "font/otf",
       ".ttc"   => "font/collection",
       ".ttf"   => "font/ttf",
       ".woff"  => "font/woff",
       ".woff2" => "font/woff2"
   )
   include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
   include_shell "find /etc/lighttpd/conf-enabled -name '*.conf' -a ! -name 'letsencrypt.conf' -printf 'include \"%p\"
' 2>/dev/null"
   $HTTP["url"] =~ "^/admin/" {
       setenv.add-response-header = (
           "X-Pi-hole" => "The Pi-hole Web interface is working!",
           "X-Frame-Options" => "DENY"
       )
       $HTTP["url"] =~ "\.(eot|otf|tt[cf]|woff2?)$" {
           setenv.add-response-header = ( "Access-Control-Allow-Origin" => "*" )
       }
   }
   $HTTP["url"] =~ "^/admin/\.(.*)" {
       url.access-deny = ("")
   }
   expire.url = ( "" => "access plus 0 seconds" )
   include_shell "cat external.conf 2>/dev/null"

*** [ DIAGNOSING ]: contents of /etc/cron.d

-rw-r--r-- 1 root root 1755 Feb  6 18:51 /etc/cron.d/pihole
   55 3   * * 7   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updateGravity >/var/log/pihole_updateGravity.log || cat /var/log/pihole_updateGravity.log
   00 00   * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole flush once quiet
   @reboot root /usr/sbin/logrotate /etc/pihole/logrotate
   */10 *  * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker local
   13 15  * * *   root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker remote
   @reboot root    PATH="$PATH:/usr/sbin:/usr/local/bin/" pihole updatechecker remote reboot

*** [ DIAGNOSING ]: contents of /var/log/lighttpd

-rw-r--r-- 1 www-data www-data 7414 Feb  6 19:21 /var/log/lighttpd/error.log
   -----head of error.log------
   2021-01-31 00:00:02: (server.c.1759) logfiles cycled UID = 0 PID = 8860
   2021-02-05 19:45:44: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 19:58:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 20:20:42: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning:  fopen(/etc/pihole/custom.list): failed to open stream: No such file or directory in /var/www/html/admin/scripts/pi-hole/php/func.php on line 101
   2021-02-05 20:47:32: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 20:47:32: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:23:57: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:24:13: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 22:25:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:25:27: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 22:44:24: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:05:26: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 23:05:50: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:36: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-05 23:06:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined offset: 2 in /var/www/html/admin/scripts/pi-hole/php/update_checker.php on line 58
   2021-02-05 23:14:08: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-05 23:14:28: (server.c.1464) server started (lighttpd/1.4.53)

   -----tail of error.log------
   2021-02-06 00:02:28: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 00:02:28: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 17:35:14: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-06 18:08:38: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 18:08:38: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 18:08:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 18:08:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 18:38:59: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 18:38:59: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 18:38:59: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 18:38:59: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 18:51:47: (server.c.2059) server stopped by UID = 0 PID = 1
   2021-02-06 18:51:48: (server.c.1464) server started (lighttpd/1.4.53)
   2021-02-06 19:18:48: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:18:48: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 19:18:48: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:18:48: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 19:20:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:20:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 19:20:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:20:37: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 19:21:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:21:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74
   2021-02-06 19:21:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: viewPort in /var/www/html/pihole/index.php on line 73
   2021-02-06 19:21:41: (mod_fastcgi.c.421) FastCGI-stderr: PHP Notice:  Undefined variable: serverName in /var/www/html/pihole/index.php on line 74

*** [ DIAGNOSING ]: contents of /var/log

-rw-r--r-- 1 pihole pihole 1532237 Feb  6 19:19 /var/log/pihole-FTL.log
   -----head of pihole-FTL.log------
   [2021-02-06 11:58:57.441 3304M] Resizing "FTL-strings" from 8192 to (12288 * 1) == 12288 (/dev/shm: 1.2MB used, 2.0GB total)
   [2021-02-06 17:35:15.153 619M] ########## FTL started! ##########
   [2021-02-06 17:35:15.154 619M] FTL branch: master
   [2021-02-06 17:35:15.154 619M] FTL version: v5.6
   [2021-02-06 17:35:15.154 619M] FTL commit: da89cc6
   [2021-02-06 17:35:15.154 619M] FTL date: 2021-01-27 17:55:33 +0000
   [2021-02-06 17:35:15.154 619M] FTL user: pihole
   [2021-02-06 17:35:15.154 619M] Compiled for armv7hf (compiled on CI) using arm-linux-gnueabihf-gcc (Debian 6.3.0-18) 6.3.0 20170516
   [2021-02-06 17:35:15.154 619M] Starting config file parsing (/etc/pihole/pihole-FTL.conf)
   [2021-02-06 17:35:15.154 619M]    SOCKET_LISTENING: only local
   [2021-02-06 17:35:15.154 619M]    AAAA_QUERY_ANALYSIS: Show AAAA queries
   [2021-02-06 17:35:15.154 619M]    MAXDBDAYS: max age for stored queries is 365 days
   [2021-02-06 17:35:15.154 619M]    RESOLVE_IPV6: Resolve IPv6 addresses
   [2021-02-06 17:35:15.154 619M]    RESOLVE_IPV4: Resolve IPv4 addresses
   [2021-02-06 17:35:15.154 619M]    DBINTERVAL: saving to DB file every minute
   [2021-02-06 17:35:15.154 619M]    DBFILE: Using /etc/pihole/pihole-FTL.db
   [2021-02-06 17:35:15.155 619M]    MAXLOGAGE: Importing up to 24.0 hours of log data
   [2021-02-06 17:35:15.155 619M]    PRIVACYLEVEL: Set to 0
   [2021-02-06 17:35:15.155 619M]    IGNORE_LOCALHOST: Show queries from localhost
   [2021-02-06 17:35:15.155 619M]    BLOCKINGMODE: Null IPs for blocked domains
   [2021-02-06 17:35:15.155 619M]    ANALYZE_ONLY_A_AND_AAAA: Disabled. Analyzing all queries
   [2021-02-06 17:35:15.155 619M]    DBIMPORT: Importing history from database
   [2021-02-06 17:35:15.155 619M]    PIDFILE: Using /run/pihole-FTL.pid
   [2021-02-06 17:35:15.155 619M]    PORTFILE: Using /run/pihole-FTL.port
   [2021-02-06 17:35:15.155 619M]    SOCKETFILE: Using /run/pihole/FTL.sock
   [2021-02-06 17:35:15.155 619M]    SETUPVARSFILE: Using /etc/pihole/setupVars.conf
   [2021-02-06 17:35:15.155 619M]    MACVENDORDB: Using /etc/pihole/macvendor.db
   [2021-02-06 17:35:15.155 619M]    GRAVITYDB: Using /etc/pihole/gravity.db
   [2021-02-06 17:35:15.155 619M]    PARSE_ARP_CACHE: Active
   [2021-02-06 17:35:15.155 619M]    CNAME_DEEP_INSPECT: Active
   [2021-02-06 17:35:15.155 619M]    DELAY_STARTUP: No delay requested.
   [2021-02-06 17:35:15.155 619M]    BLOCK_ESNI: Enabled, blocking _esni.{blocked domain}
   [2021-02-06 17:35:15.155 619M]    NICE: Set process niceness to -10 (default)
   [2021-02-06 17:35:15.155 619M]    MAXNETAGE: Removing IP addresses and host names from network table after 365 days
   [2021-02-06 17:35:15.155 619M]    NAMES_FROM_NETDB: Enabled, trying to get names from network database

   -----tail of pihole-FTL.log------
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.150 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Warning: Found unknown status 14 in long term database!
   [2021-02-06 19:19:49.151 9988M] Imported 15529 queries from the long-term database
   [2021-02-06 19:19:49.152 9988M]  -> Total DNS queries: 15529
   [2021-02-06 19:19:49.152 9988M]  -> Cached DNS queries: 2781
   [2021-02-06 19:19:49.152 9988M]  -> Forwarded DNS queries: 4442
   [2021-02-06 19:19:49.152 9988M]  -> Blocked DNS queries: 889
   [2021-02-06 19:19:49.152 9988M]  -> Unknown DNS queries: 14
   [2021-02-06 19:19:49.152 9988M]  -> Unique domains: 392
   [2021-02-06 19:19:49.152 9988M]  -> Unique clients: 51
   [2021-02-06 19:19:49.152 9988M]  -> Known forward destinations: 2
   [2021-02-06 19:19:49.152 9988M] Successfully accessed setupVars.conf
   [2021-02-06 19:19:49.157 9990M] PID of FTL process: 9990
   [2021-02-06 19:19:49.158 9990/T9991] Listening on port 4711 for incoming IPv4 telnet connections
   [2021-02-06 19:19:49.158 9990/T9993] Listening on Unix socket
   [2021-02-06 19:19:49.159 9990M] INFO: FTL is running as user pihole (UID 999)
   [2021-02-06 19:19:49.159 9990/T9992] Listening on port 4711 for incoming IPv6 telnet connections
   [2021-02-06 19:19:49.160 9990M] Reloading DNS cache
   [2021-02-06 19:19:49.160 9990M] Blocking status is enabled
   [2021-02-06 19:19:49.284 9990/T9994] Compiled 0 whitelist and 0 blacklist regex filters for 51 clients in 0.4 msec

*** [ DIAGNOSING ]: contents of /dev/shm
-rw------- 1 pihole pihole 339968 Feb  6 19:19 /dev/shm/FTL-clients
-rw------- 1 pihole pihole 152 Feb  6 19:19 /dev/shm/FTL-counters
-rw------- 1 pihole pihole 4096 Feb  6 19:19 /dev/shm/FTL-dns-cache
-rw------- 1 pihole pihole 65536 Feb  6 19:19 /dev/shm/FTL-domains
-rw------- 1 pihole pihole 28 Feb  6 19:19 /dev/shm/FTL-lock
-rw------- 1 pihole pihole 45056 Feb  6 19:19 /dev/shm/FTL-overTime
-rw------- 1 pihole pihole 4096 Feb  6 19:19 /dev/shm/FTL-per-client-regex
-rw------- 1 pihole pihole 917504 Feb  6 19:19 /dev/shm/FTL-queries
-rw------- 1 pihole pihole 12 Feb  6 19:19 /dev/shm/FTL-settings
-rw------- 1 pihole pihole 12288 Feb  6 19:19 /dev/shm/FTL-strings
-rw------- 1 pihole pihole 28672 Feb  6 19:19 /dev/shm/FTL-upstreams

*** [ DIAGNOSING ]: Pi-hole diagnosis messages

*** [ DIAGNOSING ]: Locale
    LANG=en_GB.UTF-8

*** [ DIAGNOSING ]: Pi-hole log
-rw-r--r-- 1 pihole pihole 1718300 Feb  6 19:21 /var/log/pihole.log
   -----head of pihole.log------
   Feb  6 00:01:11 dnsmasq[3304]: query[A] d3p8zr0ffa9t17.cloudfront.net from 192.168.0.167
   Feb  6 00:01:11 dnsmasq[3304]: forwarded d3p8zr0ffa9t17.cloudfront.net to 1.0.0.1
   Feb  6 00:01:11 dnsmasq[3304]: reply d3p8zr0ffa9t17.cloudfront.net is 54.230.53.191
   Feb  6 00:01:11 dnsmasq[3304]: reply d3p8zr0ffa9t17.cloudfront.net is 54.230.53.26
   Feb  6 00:01:11 dnsmasq[3304]: reply d3p8zr0ffa9t17.cloudfront.net is 54.230.53.95
   Feb  6 00:01:11 dnsmasq[3304]: reply d3p8zr0ffa9t17.cloudfront.net is 54.230.53.52
   Feb  6 00:01:11 dnsmasq[3304]: query[A] spectrum.s3.amazonaws.com from 192.168.0.167
   Feb  6 00:01:11 dnsmasq[3304]: forwarded spectrum.s3.amazonaws.com to 1.0.0.1
   Feb  6 00:01:11 dnsmasq[3304]: reply spectrum.s3.amazonaws.com is <CNAME>
   Feb  6 00:01:11 dnsmasq[3304]: reply s3-1-w.amazonaws.com is 52.217.85.140
   Feb  6 00:01:11 dnsmasq[3304]: query[A] ntp-g7g.amazon.com from 192.168.0.167
   Feb  6 00:01:11 dnsmasq[3304]: forwarded ntp-g7g.amazon.com to 1.0.0.1
   Feb  6 00:01:11 dnsmasq[3304]: reply ntp-g7g.amazon.com is 34.226.24.249
   Feb  6 00:01:21 dnsmasq[3304]: query[A] arcus-uswest.amazon.com from 192.168.0.68
   Feb  6 00:01:21 dnsmasq[3304]: forwarded arcus-uswest.amazon.com to 1.0.0.1
   Feb  6 00:01:21 dnsmasq[3304]: reply arcus-uswest.amazon.com is 52.119.164.214
   Feb  6 00:01:43 dnsmasq[3304]: query[A] firetvcaptiveportal.com from 192.168.0.68
   Feb  6 00:01:43 dnsmasq[3304]: forwarded firetvcaptiveportal.com to 1.0.0.1
   Feb  6 00:01:43 dnsmasq[3304]: reply firetvcaptiveportal.com is 52.200.39.104
   Feb  6 00:01:43 dnsmasq[3304]: reply firetvcaptiveportal.com is 34.237.201.210


********************************************
********************************************
[✓] ** FINISHED DEBUGGING! **

It was too early in the morning... :coffee:

This is the total number of clients sending queries to Pi-hole in the last 24h:


My guess is, it is an issue here

If the technicolor is in Bridge mode how can it be your router at the same time? I would also remove the Zyxel and try to connect the Pi device directly to the technicolor.

I meant the Technicolor was my Router and I changed it's mode to Bridge and now it's my Gateway.

I tried two different configurations (<=> means connected via cable, ~~~ means connected via wifi) but until yet no success.

Scenario 1:

Technicolor CGA4233DE (Bridge mode, 192.168.0.1)
	<=> Raspberry Pi/Pi-hole (DHCP, 192.168.0.2)
	<=> Zyxel Multy X (Bridge mode)
		~~~ Laptop (Default gateway: (empty), DHCP-Server: (empty), DNS-Server: fec0:0:0:ffff::1%1, fec0:0:0:ffff::2%1, fec0:0:0:ffff::3%1, IP: 169.254.XXX.XXX, no internet, gateway and pihole not accessable

Scenario 2:

Technicolor CGA4233DE (Bridge mode, 192.168.0.1)
	<=> Raspberry Pi/Pi-hole (DHCP, 192.168.0.2)
	<=> Laptop (Default gateway: fe80::1%11, 192.168.0.1, DHCP-Server: 192.168.0.2, DNS-Server: 192.168.0.2, IP: 192.168.0.250, no internet, gateway not accessable and pihole accessable

Do you have an idea or hint what I can try next or do I miss something?

Try slowly to build up your network with a working internet connection.

Set the Technicolor in router mode, remove the Pi-hole and the Zyxel. It it's working, integrate the Pi-hole as DNS server. If it's working set the Pi-hole as DHCP server.

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