Solved:
- open ipv6 port 8080 on router
- add AAAA record on cloudflare with test.domain.com
- create script that update ipv6 to AAAA DNS record on cloudflare subdomain
- Add Origin Rule for domain.com > Rules > Origin Rule:
wildcard: https://test.domain.com/*
Destination port: 8080 - create hotplug script that run on ipv6 update.
- done.