Can't use local DNS (PiHole) on Archer A7

Can't use local DNS (PiHole) on Archer A7
Can't use local DNS (PiHole) on Archer A7
2021-01-10 02:10:53
Model: Archer A7
Hardware Version: V5
Firmware Version: 1.1.0

I would like to use PiHole DNS (on a local Raspberry Pi) as my DNS server. However anytime I enter it as the DNS server my Archer A7 immediately goes offline. This worked fine previous and seems to have started after recent firmware updates. From what I've seen on other pages this may be due to DNS rebind protection potentially added as "Enhance device security" in the 2020-11-04 firmware, and as a result these units don't allow DNS servers to be on the same subnet any longer, but I see no way to disable it. Can someone please put up instructions on how to allow an Archer A7 unit to use local DNS. If not I'll be tossing out my unit and 3 others my family uses to replace them with something that is PiHole compatible. Thanks. 

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Re:Can't use local DNS (PiHole) on Archer A7
2021-01-17 20:18:01

@Nic2032 

I have the A7 v5.0   Firmware 1.0.16 build 20201029 rel 43238(5553)

 

There is a firmware upgrade available to 

1.1.0 Build 20201120 rel.50399

 

I'm wondering if that is the version you are on?

 

I have a pi that works great for DNS.I do have it on a laptop with Ubuntu 20.

Assuming you are on the same ISP since before this started.

Not sure what else would be going on. 

Thanks, Jon

 

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Re:Can't use local DNS (PiHole) on Archer A7
2021-01-17 20:30:44

@dero 

I stand slightly corrected. I have my dns settings in DHCP Server area set to my local pi.

dns settings in Internet / Advanced were set to default (from ISP).

When I try to change them, it says DNS server IP address and LAN IP address cannot be in the same subnet.

So, it won't let me change it.

I'm not sure how much DNS settings matter here as opposed to the settings in DHCP, which works well.

 

 

 

 

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