AC1350 ignoring local DNS settings (pi-hole)

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AC1350 ignoring local DNS settings (pi-hole)

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AC1350 ignoring local DNS settings (pi-hole)
AC1350 ignoring local DNS settings (pi-hole)
2022-04-05 14:24:11 - last edited 2022-04-06 17:38:57

I'm having the exact problem described here. I restarted the router and my local DNS server is still being ignored.  I don't remember changing any router settings and I've been using this set up for a few years now.

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#1
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2 Accepted Solutions
Re:AC1350 ignoring local DNS settings (pi-hole)-Solution
2022-04-06 16:13:17 - last edited 2022-04-06 17:38:57

  @d553 

 

Yep, set both DNS servers to 192.168.0.100 and test.

Is your device Archer C60 ?

Your DHCP server pool looks unrealisticly large.

You LAN settings should be like:

IP address 192.168.0.1/255.255.255.0

And the DHCP pool more like:

192.168.0.2 - 192.168.0.99

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Re:AC1350 ignoring local DNS settings (pi-hole)-Solution
2022-04-06 18:50:58 - last edited 2022-04-06 19:49:32

  @d553 

 

Keep the router's IP address and its DHCP server pool settings as I posted and everything would be fine.

This router can serve normally 25-30 devices so your previous DHCP pool was unnecessarily large.

As for the DNS settings keep both primary and secondary DNSs set to your pi-hole - I believe this was the issue, cause I doubt that you have any devices in other than 192.168.0.0/24 network.

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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 00:24:30

  @d553

 

There should be a reason for that for sure. Any FW updates on the router recently ?

Do the problematic devices get their IP addresses by router's DHCP server or they are statically assigned ?

Have you checked the network properties of these devices to see what's their DNS servers assigned ?

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#2
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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 13:53:04
- No recent update (and the "Check for Update" says "Your firmware is up to date") - I've got a Win10 machine that gets IP by DHCP and a linux machine that gets a static assignment via "Address Reservation" from the DHCP Server panel. On the Win10 machine, it says "DNS servers: 192.168.1.100, 192.168.0.1" where the first is my pihole and the second is my router (which it lists as its DHCP server, too).
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#3
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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 15:11:30

  @d553 

 

If you have in your router DHCP server settings:

 

Primary DNS:192.168.0.100 (pi-hole)

Secondary DNS:192.168.0.1 (router)

 

and for some reason a DNS request can't be resolved by the Primary DNS server then the DNS query will be resolved by the Secondary DNS server.

To test if that's the case I would suggest to remove the Secondary DNS server (192.168.0.1) from your router's DHCP server DNS entries and test again.

 

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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 15:54:16

  @terziyski 

 

Originally I had nothing set for the secondary:

I'll try setting it to the pihole, too.

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#5
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Re:AC1350 ignoring local DNS settings (pi-hole)-Solution
2022-04-06 16:13:17 - last edited 2022-04-06 17:38:57

  @d553 

 

Yep, set both DNS servers to 192.168.0.100 and test.

Is your device Archer C60 ?

Your DHCP server pool looks unrealisticly large.

You LAN settings should be like:

IP address 192.168.0.1/255.255.255.0

And the DHCP pool more like:

192.168.0.2 - 192.168.0.99

If this was helpful click once on the arrow pointing upward. If this solves your issue, click once the star to mark it as a "Recommended Solution".
Recommended Solution
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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 16:31:28 - last edited 2022-04-06 16:32:25

  @terziyski I think when I set up the router I wanted to have 192.0.x.x and 192.1.x.x have meanings.  That's why my pihole's at 192.168.1.100 instead of 192.168.0.100.  My LAN settings are IP address 192.168.0.1/255.255.0.0

 

If there's harm in that, I can scale back to only 100 addresses like you suggest.  I don't know what's normal :)

 

EDIT: Oh, and the model title of the page I visit is "Archer C59".

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#7
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Re:AC1350 ignoring local DNS settings (pi-hole)
2022-04-06 17:38:39

  @d553 

 

Thanks!  It's working now.  (Or at least I'm at the pihole problem level, no longer router)  I think I was causing multiple problems.  My 192.168.x.x dhcp space meant that I was handing out addresses that the pihole considered "outside the local network".  I need to either tell the pihole to accept DNS requests more than one hop away (scary, though my pihole's behind the router without a port forwarded to it or anything) or tell the pihole what's inside my network.  This may have combined with not having the pihole listed as the secondary DNS server.

 

Thanks again!

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#8
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Re:AC1350 ignoring local DNS settings (pi-hole)-Solution
2022-04-06 18:50:58 - last edited 2022-04-06 19:49:32

  @d553 

 

Keep the router's IP address and its DHCP server pool settings as I posted and everything would be fine.

This router can serve normally 25-30 devices so your previous DHCP pool was unnecessarily large.

As for the DNS settings keep both primary and secondary DNSs set to your pi-hole - I believe this was the issue, cause I doubt that you have any devices in other than 192.168.0.0/24 network.

If this was helpful click once on the arrow pointing upward. If this solves your issue, click once the star to mark it as a "Recommended Solution".
Recommended Solution
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#9
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