Enable IPv6 on AWS EKS guidance

Setup:

  • AWS EKS cluster configured with Traefik ingress
  • NLB as load balancer in front of ingress
  • Activated dual Stack on the NLB

Current state:

  • DNS resolves AAAA record for the domain
  • IPV4 setup is fully functional

Problem:

  • Every request generates an "500 Service unavailable" when called over IPv6

As the response is a 500 it means that the request passes the NLB and reaches the ingress. Ingres is somehow not able to find the correct namespace and service where it should forward the request.
Is there anything else that I should configure?