Troubleshoot IPv6 DNS Issues Skill Systematic diagnosis and resolution of IPv6 DNS issues that cause clients to bypass local network access and connect via Cloudflare Tunnel with OAuth authentication. Quick Start Diagnose IPv6 DNS issue: Table of Contents 1. When to Use This Skill 2. What This Skill Does 3. Instructions - 3.1 Understanding the Problem - 3.2 Verify IPv6 Filtering Configuration - 3.3 Test Pi-hole IPv6 Blocking - 3.4 Test Client DNS Resolution - 3.5 Clear Client DNS Cache - 3.6 Disable Browser DNS-over-HTTPS - 3.7 Verify Fix 4. Supporting Files 5. Expected Outcomes 6. Requiremen…