AX1800 DNS Fails Leak Test

AX1800 DNS Fails Leak Test

AX1800 DNS Fails Leak Test
AX1800 DNS Fails Leak Test
2024-07-19 19:00:26
Model: Archer AX1800  
Hardware Version: V1
Firmware Version: 1.3.7 Build 20230829 rel.77761(5553)

[Note: The router's hardware version is actually "Archer AX21 v1-20", but the forum won't let me select that]

 

tl;dr - My AX1800 DHCP settings have a DNS server that's ignored.

 

I have an AT&T modem. I've turned off its DHCP and Wi-Fi, but it's not in passthrough mode or anything. The modem has no option for specifying, or even viewing, DNS servers.

 

I have my AX1800 acting as my DHCP server, and it points to my AT&T modem as the gateway. I specified a single DNS server, as shown here.

 

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On my Windows 11 machine (which has a static IP), its gateway and DNS server both point to my AX1800 router. What I would EXPECT is that my DNS requests would get routed to my AX1800, which would then send them onto the DNS server I've specified.

 

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Yet, when I go to a DNS leak test site and run the standard test, it's showing that my DNS servers are AT&T, not the one I've specified in my AX1800.

 

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I've seen some internet chatter about AT&T possibly hijacking DNS queries, but I don't know if that's actually a thing or not. If so, seemingly using DOH (i.e. using TLS) can prevent that, but I don't see an AX1800 option that specifies "use TLS for DNS".

 

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Re:AX1800 DNS Fails Leak Test
2024-07-19 19:01:44
FYI, I also have a TP-Link TL-SG116E switch that has DHCP abilities (currently turned off) but that doesn't seem to have any DNS settings.
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