Pi-Hole and VINCENT modem-router: DNS issues, pi-hole managing some traffic but Internet not working

[deHakkelaar]

Before configure anything on the router, does below one resolve to an IP when run on that Windows PC on a CMD prompt?

nslookup pi-hole.net 192.168.2.19

Eg:

C:\>nslookup pi-hole.net 10.0.0.2
Server:  pi.hole
Address:  10.0.0.2

Non-authoritative answer:
Name:    pi-hole.net
Address:  3.18.136.52

And does below one gets blocked (0.0.0.0)?

nslookup flurry.com 192.168.2.19

Eg:

C:\>nslookup flurry.com 10.0.0.2
Server:  pi.hole
Address:  10.0.0.2

Name:    flurry.com
Addresses:  ::
          0.0.0.0

@PantsMasterson

If we can get this up and running, should I just use the static IP 192.168.2.19 for both DNS entries on the router?

Yes you could if it doesnt allow a single IP.

@PantsMasterson

The current DNS servers configured through DHCP are fec0:0:0:ffff::1%1; 2%1; 3%1.

Is above from the netsh output?
If so:

Can't put pihole as primary DNS

That would indicate that your router is advertising its own IPv6 address as DNS server, allowing your clients to by-pass Pi-hole. You'd have to find a way to configure your router to stop advertising its own IPv6 as DNS server, or to advertise your Pi-hole host machine's IPv6. You'd have to consult your router's documentation sources on further details for its IPv6 configuration options. If your router doesn't support configuring IPv6 DNS, you could consider disabling IPv6 altogether, provid…