VPN OCI and on-prem pfSense

Hi gays.

I’m trying to connect OCI and an on-prem pfSense box (for learning purposes).
When I try to create a CPE in OCI I only have the option to specify the public IP address of the pfSense box. My public IP is dynamic :frowning: I have dynDNS set up via cloudflare and that points to my current public IP. Does anyone know if there is any way to use hostname instead of IP in OCI?