Ipv6 with UDP in AWS

I'd check the AWS Marketplace for a solution.

This is not supported today, see below from the documentation:

Network Load Balancers support both IPv4 and IPv6 target groups. The default selection is IPv4. IPv6 target groups can only be associated with dualstack Network Load Balancers.

Considerations

• All IP addresses within a target group must have the same IP address type. For example, you can't register an IPv4 target with an IPv6 target group.
• IPv6 target groups can only be used with dualstack load balancers with TCP or a TLS listeners.
• IPv6 target groups only support IP type targets.