Changes:
- OpenWRT IP changed from 10.0.0.246 to 10.0.0.254
- TP-Link AX72 IP changed from 10.0.0.254 to 10.0.0.246 (swapped)
- Added Step 6: Advanced DHCP Options with dual DNS configuration
- Added dual DNS verification in Step 15
- Updated all IP references throughout checklist
- Added TP-Link AX72 Pro WiFi 6 configuration phase