modem/router changed dns, all devices are able to connect to internet and have adblock
Actual Behaviour:
The webpage shows pihole up and running and even receiving queries, however any device such as laptop or phone is unable to connect to anything outside the LAN
Your debug log shows that Pi-hole is working properly:
*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] sexyhotgirls.blogspot.ae is 0.0.0.0 on lo (127.0.0.1)
[✓] sexyhotgirls.blogspot.ae is 0.0.0.0 on eth0 (172.17.0.2)
[✓] doubleclick.com is 142.251.12.138 via a remote, public DNS server (8.8.8.8)
It is receiving queries from the router and answering those queries.
Mar 4 06:26:57 dnsmasq[10685]: query[A] guarded-meadow-30850.herokuapp.com from 172.17.0.1
Mar 4 06:26:57 dnsmasq[10686]: query[HTTPS] guarded-meadow-30850.herokuapp.com from 172.17.0.1
Mar 4 06:26:57 dnsmasq[10686]: forwarded guarded-meadow-30850.herokuapp.com to 1.1.1.1
Mar 4 06:26:57 dnsmasq[10686]: reply guarded-meadow-30850.herokuapp.com is NODATA
Mar 4 06:26:57 dnsmasq[10685]: forwarded guarded-meadow-30850.herokuapp.com to 1.1.1.1
Mar 4 06:26:57 dnsmasq[10685]: reply guarded-meadow-30850.herokuapp.com is 34.201.81.34
Mar 4 06:26:57 dnsmasq[10685]: reply guarded-meadow-30850.herokuapp.com is 54.208.186.182
Mar 4 06:26:57 dnsmasq[10685]: reply guarded-meadow-30850.herokuapp.com is 54.224.34.30
Mar 4 06:26:57 dnsmasq[10685]: reply guarded-meadow-30850.herokuapp.com is 54.243.129.215
The DHCP discovery test was not successful:
*** [ 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() (/__w/FTL/FTL/src/dhcp-discover.c:233): Network is unreachable
WARN: Could not sendto() in send_dhcp_discover() (/__w/FTL/FTL/src/dhcp-discover.c:233): Network is unreachable
DHCP packets received on interface sit0: 0DHCP packets received on interface tunl0: 0
DHCP packets received on interface eth0: 0
DHCP packets received on interface lo: 0
Check on individual clients to see which DNS clients are using.