OK (answered by
I don’t understand why my WAN name should be doing a DNS request for Facebook.com and get recorded in the Pi-Hole log.
Anybody have any ideas?
Just found this similar question on Reddit, but no answer unfortunately.
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks
I found this a moment ago:
It may (or may not) explain things or be an aid to further investigation.
@MrHalfAsleep thanks. My UDM Pro does do a keep-alive ping, but you can select the IP address, I use 18.104.22.168. Both my Pi-Holes are specified in the router and this seems to work ok.