IPV4 clients > IPV6 only server

Having issues setting this up, I want to accept IPV4 & IPV6 clients for a IPV6 only server. The server loads fine using the IPV6 address and by disabling the proxy for the domain. It reports a 522 Error when attempting to load the page with proxy enabled.
How can i get the proxy to work with IPV4 clients ?

You shouldn’t have to set anything special. IPv4 clients will request from Cloudflare data centers, which will then request from your origin using IPv6.

In all likelihood, someone (a firewall, another proxy) is blocking or rate-limiting Cloudflare’s IPv6 addresses. One user with a similar issue found out what was the cause. Yours may be different. Talk to your hosting provider’s support, they may offer you hints.

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