- Updated 'docker-compose.yml' with new DuckDNS token to lock out rogue updaters (FritzBox/HA).
- Enhanced 'dns-monitor/monitor.sh' to detect 'IP Flapping' (Zombie Updaters) by comparing Public vs. Global vs. Local IPs.
- Updated documentation 'duckdns_setup.md' with troubleshooting steps for IP flapping and zombie updaters.