I use KeenDNS, a build-in DDNS provider in Keenetic router for access to my local network (for example - BubbleUpnp app reaches BubbleUPNP server for transcoding which installed on local NAS when I’m outdoors with mobile connection). How it works - you specify a local ip and port of your app (e.g. 192.168.1.200:4533) and give an address like this - https://navidrome.myhomeaddress.keenetic.link , which resolve to 192.168.1.200:4533.
The Problem is Symfonium requires specific port for Secondary Connection for Navidrome, which is impossible because KeenDNS resolves an “IP:PORT”. Is it possible solve this problem?