Should I use Pi-hole as WAN DNS too?

[Haxy89]

Hi all,

My LAN dns setting point to Pi-hole:

Should I use Pi-hole in WAN dns settings too, or leave default as follow?:

Thanks

[robgill]

Generally not.

Some routers won't let you use an address which appears on a network they control. Others, will accept the setting, but stop working properly, without displaying an error. Many routers continually ping out to help determine connectivity, and do a DNS test each time.

Your screenshot looks like an Asus or merlin, they fall in the last category.

[Haxy89]

Its Asus.
When I set pi-hole as wan dns I saw many request from router.
So leave Google dns as wan dns?

[robgill]

Yes, so long as everything else is working with Pi-hole and your network, then it's best to leave the WAN DNS settings be.

[jacob.salmela]

This is correct. See also:

How do I configure my devices to use Pi-hole as their DNS server?

Three methods Generally, there are three different methods that will enable devices on your network to be protected by Pi-hole. 1. Define Pi-hole's IP address as the only DNS entry in the router Rationale Only is italicized here for a reason: Pi-hole needs to be the only DNS server because it intercepts queries and decides whether or not they should be blocked. If you have other DNS servers configured, you may be sent to the correct domain, bypassing Pi-hole completely. Because of this, we…