I am using Raspberry Pi Model 3b for pihole with hypriot os and docker. If I set pihole to resolve DNS from my laptop, it works fine. But setting the DNS at the router breaks the internet connectivity.
pihole debug log is attached herewith
Interestingly, after setting DNS in the router, the pihole receives lots of queries to 3.debian.pool.ntp.org.
Can someone help me debug this scenario? I checked with
nslookup google.com pihole_ip, and it works when I try from my laptop. But it fails when I try after setting system-wide DNS IP amd without pihole_ip.