Hi, I just set up my Flint 2 received today.
I tried changing the DNS servers but I think it's still using the ISP ones.
I'm connected on LAN 1 using it as WAN.
In the Internet tab on Ethernet 1 I see:
DNS servers: 213.205.32.70, 213.205.36.70
In tab Network->DNS I set up:
DNS 1: 1.1.1.1
DNS 2: 8.8.8.8
DNS 3: 1.0.0.1
DNS 4: 8.0.0.8
In Luci at the voice Network the same:
IPv4 Upstream:
Protocol: PPPoE
Address: XX
Gateway: XX
DNS 1: 213.205.32.70
DNS 2: 213.205.36.70
Connected: 2h 59m 31s
For the DNS you must make sure that your client is using the router as it's DNS server.
A browser might intercept here. Make sure to enable Override DNS Settings for All Clients as well, see DNS - GL.iNet Router Docs 4
The problem occurs from every device, not just the Mac. However, I don't know if I have explained the problem well: it is not the computer or the browser that is showing the wrong servers but the router: I open the Flint 2 administration page and I see Ethernet 1(which I use as WAN) and it tells me PPPoE and in "DNS servers" there are those of the ISP and not the ones I set in Network->DNS