HA Proxy and redirect with IPv6

[TheEPOCH]

Hello, I'm using my OPNsense as described in the well-known tutorial 'HAProxy + Let's Encrypt Wildcard Certificates'.

Recently, I've encountered a frequent issue where services behind the proxy are not accessible, apparently because IPv6 is being used primarily. Generally, IPv6 works for me.

Now, I'm wondering if there's a way to register the IPv6 address of the firewall in the DNS system of my hosting provider, and if a request to a service (which is filtered by URL) comes through the IPv6 address, it is forwarded to the service.

Thank you