Hello, good afternoon, I am trying to make an implementation to access a device remotely, but without needing to have a public IP, since both internet providers give me internet through DHCP, and I have thought about a DDNS that detects me when The main link goes down and I update the IP to the secondary one, but I can't get the DDNS to connect, that is, it doesn't detect any IP. Port forwarding is necessary to reach each device I require.