Ideally, you have a transition time where you can run dual-stack (ipv4+ipv6 at the same time).
For a private setup, I’d perhaps check if it were possible to run ipv6 only. In Europe, there are countries where they even rolled out ipv6 on mobile networks on a large scale. It depends if you share a lot with others (that might just have ipv4) or if you are abroad without ipv6.
If your mobile operator or others don’t have ipv6, ask for it!
Other ways: change ISP, use a VPN service with ipv4, run as TOR hidden service, rent a virtual server (-> put everything there, or just use the ip), if you are on ipv4only-> use tunnelboker: https://tunnelbroker.net/, cloudflare has proxies but the free versions come with limitations …