Yesterday I installed pi hole on my raspberry pi 3 B+. I had some problems during the installation but I succeeded. The problem is that although everything works, and the pi hole is active and I can access it via the ip address, I still see ads in every website. I can see in the stats of the pi hole that it blocked some queries but I still see ads. After the installation I saw that I should config the dns server but I didn't know how to it. In addition, I saw that I have to config the DHCP server of the pi hole if i don't have an option in my router but after I disabled the DHCP server in the router, I couldn't do nothing.
Even though Pi-hole is up and running your devices might still be using other DNS servers for their lookups, which means Pi-hole won't see those or be able to block them. What's the output of these two commands on the computer where you are still seeing ads?
nslookup pi.hole
nslookup flurry.com
That's true because you need to tell computers to use your new Pi-hole. One easy way to do this is to log in to your router, find the DHCP section, and find the entry where you can tell devices what DNS to use. Then you change that to be the static IP address of your Pi-hole. Save all the changes. Then disconnect and reconnect your computers from your network so they pick up the new settings.
That's the other way to do it. Pi-hole has its own DHCP server which is turned off initially. If your router doesn't let you modify the DHCP settings, you can instead turn off the router's DHCP and turn on the Pi-hole's DHCP. Now the Pi-hole will hand out addresses on your network, and as a bonus it will always tell your devices to use the Pi-hole for DNS.
You can turn on Pi-hole's DHCP in Settings > DHCP, tick the enabled box, type in your router's IP address where indicated, and pick a range of addresses to hand out. Eg if the router is on 192.168.1.1 and Pi-hole is on 192.168.1.2, then you could use 192.168.1.10 to 192.168.1.254 for the DHCP range. The scroll down and click Save. Finally, disconnect and reconnect your computers from the network to pick up the new settings.
Once done, try those two commands above once again.
The first one should give the address of the Pi-hole. The second one should be all zeroes because it's blocked by Pi-hole as standard.
I used the second option, now it works the pi hole ip is 192.168.1.17 and router is 192.168.1.1 so I used 192.168.1.10 to 192.168.1.254, it's ok?
Now I have an error in the pi hole diagnosis that saying:
" Warning in dnsmasq core:"
"DHCP packet received on eth0 which has no address"
That's the LAN settings in my router before I turned off the DHCP server:
That's normal when you run a debug log. Please do searches for any errors, here and on reddit where you are also posting. That would reveal for example this explanation from @jfb
When an interface does not have a DHCP configuration (such as the loopback interface lo, or other special interfaces such as docker0), this warning is printed. You can safely ignore it when it happens only during DHCP testing, e.g., during Pi-hole debug log generation.
Youtube is a common question, a forum search will find more info. In short, no. There are various Facebook adlists floating around, eg the ones at Developer Dan's page.
