Solution] ARC setup in the Czech Republic (CORE NAS Synology X Router Synology x Router ISP Vodafone (UPC) - ARC: Port Forwarding Resources - Roon Labs Community
ONU GPON WIFI 1GE GIGABIT FD600-511GW-HR630 5DBI UPC, OLT
How to Open UPC Giga Connect Box Router Admin Page - How to Change UPC Router Settings - YouTube