DDNS with Caddy as a reverse proxy server

[Swindiff]

Another question while I am here.

Is it possible to use DDNS hostnames rather than explicit IP addresses in the whitelist for allowed network connections within Jellyfin?

I would like to create a whitelist for my families IP addresses, but if their IP address changes they would no longer be able to connect.

I think I know the answer, just wondering if this is even technically possible

Cheers