Just installed Pi Hole on a Raspb Model B Rev 2.
Installation fine and router (ASUS DSL-AC68U) set with Pi Hole as DNS. All looked O.K, with ads being blocked. However I'm finding that sometimes web pages don't load first time. With Chrome I get the message "server IP address could not be found." and "DNS_PROBE_FINISHED_NXDOMAIN". F5 seems to resolve the problem.
It's not limited to any particular PC. All PCs (with different browsers) on my network exhibit the same behaviour.
When pi hole works, it's great but using a PC where you have to keep pressing F5 to refresh the page is just too difficult.
Anybody seen this before and can offer any guidance?