yes, right, up to your router WAN fail over setup (in case of Ubiquiti).If failover is done at the router, wouldn't Synology DDNS / QuickConnect just pickup the new external WAN IP address of the active internet connection and route the DDNS / QuickConnect automatically (i.e. it should be seemless to the NAS)?
I have actually 2 connections to internet (1 fiber and 1 4G) and I would like to always be able to acces to synology remotely if one of the connections fail. Any idea how to do it? My NAS (RS819) has 2 network ports.
I have an Ubiquiti USG 3P. So failover can be done, not sure though how I can setup a remote access to the NAS that can work with it though