Multiple times per day i receive a DNS timeout when trying to access the internet. I can see that the DNS has timed out if i try "nslookup www.google.com" on my Windows laptop.
My setup is running Pihole on a Ubuntu VM on HyperV. During the loss of internet connectivity (due to DNS timeout) i can still access the local instance of Pihole which is running on an internal IP (192.xx.xxx.xx) so i dont think its related my network.
The DNS will usually comes back within 5 minutes of hitting the timeout.
Do you have any insights on what the issue could be?
The one thing I note in your debug log is this - the Pi-Hole should be able to resolve a DNS entry using 8.8.8.8.
*** [ DIAGNOSING ]: Name resolution (IPv4) using a random blocked domain and a known ad-serving domain
[✓] 1479646169.xiazaidown.com is 0.0.0.0 via localhost (127.0.0.1)
[✓] 1479646169.xiazaidown.com is 0.0.0.0 via Pi-hole (192.168.86.11)
[✗] Failed to resolve doubleclick.com via a remote, public DNS server (8.8.8.8)
Run this command from the Pi-Hole host terminal and post the results. This will show if it's repeatable.
dig doubleclick.com @8.8.8.8
Is this problem on any time pattern that you have noticed or is it random?