DNS Errors On New OPNsense Config

[fakebizprez]

I have my OPNsense configured to use Cloudflare DNS.
After running several tests, they all are picking up my ISP's DNS (AT&T).

What could the cause be, and what can I do to troubleshoot this?

[netnut]

What could the cause be, and what can I do to troubleshoot this?

System: Settings: General

Uncheck : Allow DNS server list to be overridden by DHCP/PPP on WAN

[fakebizprez]

Thank you for your response.
I have solved the issue. ✅
My IPv6 was misconfigured.