Obviously, this is the last question considering that I have everything set up in UniFi.
When I look at DNS Leak Test - BrowserLeaks , I see my ISP’s DNS servers and surprisingly Cloudflare DNS servers. I never added the Cloudflare servers! Is this feature built into UniFi OS?If so, how do I remove these servers? They are not located where DNS servers can be configured…
It’s likely a setting in your browser that is using DNS over HTTPS
No, I use (sometimes) Apple Private Relay, mostly off.
This might have some relevant info: iCloud Private Relay: information for Cloudflare customers
Hi @LTS_Tom and @LimeasaurusRex
I understand how Private Relay works and it’s not related to my problem. When I turn on Private Relay, either Cloudflare or Akamai DNS servers are available.
When I disable Private Relay, Cloudflare servers reappear in addition to my ISP’s DNS servers.
I’m just guessing, and I don’t know if it’s technically possible, but when I first set up my UDR7, I had Private Relay turned on. Could UniFi OS have inherited Cloudflare serves and stored it somewhere?
What DNS are you using under the internet → WAN settings? Are you using the encrypted DNS under Cybersecure?
No DNS set, I get automatically my ISP DNS and out of nowhere the Cloudflare DNSs
Who’s your ISP? They might be using Cloudflare.
“By default, UniFi will use the DNS Server provided by your Internet service provider.” https://help.ui.com/hc/en-us/articles/17484948645015-UniFi-DNS-Troubleshooting-Guide
ISP is Orange via fiber connection and definitively they are not using Cloudflare servers
When I hook up my old Asus router I get exclusively Orange DNS servers.
Yesterday I was looking into the same issue as you reported. With DNS set to Auto on our Unifi Gateway, dnsleaktest.com showed the Internet providers DNS server and 4 Cloudflare DNS servers. If I manually set the internet providers DNS server on Unifi then Leak Test would just show these.
What I have since found is Unifi do the following: “When UniFi detects multiple DNS servers while set to “Auto,” it is often because the system is blending ISP-provided DNS servers with default, hardcoded, or secure DNS options (like 1.1.1.1 or 8.8.8.8). UniFi treats these as a pool of available resolvers, and clients may use them in any order.” . If you Google “unifi auto dns server multiple servers detected” you will find this information. No other router/gateway seems to employ the method Unifi has in place for DNS servers.
Here is a screenshot with additional details:
Thank you DRB, where are you from? The problem description contains “in some versions”
I reported this to Ubiquiuti support, lets see if they give some statement or resolution; will repost it here
Pleased to help out. And you are correct, apparently only in some versions this is an issue, and it is for my Unifi gateway. So I moved from Auto for DNS to manually entering DNS servers I want assigned.
I am from Melbourne, Australia. Run a small IT Consultancy business.
PS better post this meme as so true
Hi,
Here’s Ubiquiti’s response regarding the unexpected Cloudflare DNS servers:
Their explanation is pretty lame; I don’t buy it, but I can live with it.
But now the reason I bought UniFi gear is taking on tragicomic overtones.
I had a fully functional Asus Wi-Fi mesh system, but it lacked IoT network capabilities. Since my robot vacuum cleaner frequently visited chinese “Data Centers,” I decided to switch to UniFi….
These videos by 404 777 explains more in depth about how the DNS works in UniFi.
Ouch, this is toooo technical for me.
Those videos offer the more in depth explanation vs the simplified one that UniFi gives.
